WO2022193799A1 - 一种风机控制方法、装置及风机设备 - Google Patents

一种风机控制方法、装置及风机设备 Download PDF

Info

Publication number
WO2022193799A1
WO2022193799A1 PCT/CN2022/070147 CN2022070147W WO2022193799A1 WO 2022193799 A1 WO2022193799 A1 WO 2022193799A1 CN 2022070147 W CN2022070147 W CN 2022070147W WO 2022193799 A1 WO2022193799 A1 WO 2022193799A1
Authority
WO
WIPO (PCT)
Prior art keywords
air volume
power
fan
preset
target
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2022/070147
Other languages
English (en)
French (fr)
Inventor
彭国彬
钟明胜
王豪浩
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GD Midea Heating and Ventilating Equipment Co Ltd
Hefei Midea Heating and Ventilating Equipment Co Ltd
Original Assignee
GD Midea Heating and Ventilating Equipment Co Ltd
Hefei Midea Heating and Ventilating Equipment Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GD Midea Heating and Ventilating Equipment Co Ltd, Hefei Midea Heating and Ventilating Equipment Co Ltd filed Critical GD Midea Heating and Ventilating Equipment Co Ltd
Priority to EP22770161.2A priority Critical patent/EP4290080A4/en
Priority to US18/550,462 priority patent/US12410807B2/en
Publication of WO2022193799A1 publication Critical patent/WO2022193799A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/75—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity for maintaining constant air flow rate or air velocity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2270/00—Control
    • F05D2270/30—Control parameters, e.g. input parameters
    • F05D2270/306—Mass flow
    • F05D2270/3061—Mass flow of the working fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2270/00—Control
    • F05D2270/30—Control parameters, e.g. input parameters
    • F05D2270/335—Output power or torque
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Definitions

  • the application belongs to the technical field of fans, and in particular relates to a fan control method, device and fan equipment.
  • the fan is a machine that relies on the input mechanical energy to increase the gas pressure and discharge the gas. It is widely used in air conditioners, ventilation devices, blowers, wind turbines and other fan equipment. In the working process of the fan, it is usually necessary to realize the constant air volume control of the fan.
  • Some existing technologies are implemented by directly installing the air volume meter or static pressure sensor, which is costly and has potential failure of the air volume meter or static pressure sensor. The risk of control failure; other technologies use the constant air volume control method without an air volume meter, which has the problem of a large amount of calculation or the inability to dynamically adjust in real time.
  • One of the purposes of the embodiments of the present application is to provide a fan control method, device and fan equipment, which can dynamically adjust the air volume of the fan in real time without installing an air flow meter and a static pressure sensor, so as to realize constant air volume control, Low cost, high control precision and good stability.
  • a first aspect of the embodiments of the present application provides a fan control method, including:
  • the actual rotational speed is adjusted according to the rotational speed step.
  • a second aspect of the embodiments of the present application provides a fan control device, including:
  • a first obtaining unit configured to obtain the actual rotational speed, actual power and target air volume of the fan
  • a power calculation unit configured to obtain a target power corresponding to the target air volume according to the actual rotational speed and the target air volume
  • a second obtaining unit configured to obtain a control duration and a rotational speed step corresponding to the power difference when the power difference between the actual power and the target power is not within the initial difference range
  • a rotational speed adjusting unit configured to adjust the actual rotational speed according to the rotational speed step size after the control time period.
  • a third aspect of the embodiments of the present application provides a fan device, including a fan, a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor executes the computer program When implementing the steps of the fan control method described in the first aspect of the embodiments of the present application.
  • a fourth aspect of the embodiments of the present application provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the implementation of the first aspect of the embodiments of the present application is implemented The steps of the fan control method.
  • the actual speed, actual power and target air volume of the fan are obtained; the target power corresponding to the target air volume is obtained according to the actual speed and the target air volume; when the difference between the actual power and the target power is obtained When the power difference between the two is not within the initial difference range, obtain the control time and speed step corresponding to the power difference; after the control time, adjust the actual speed according to the speed step, which can eliminate the need to install an air volume meter and a static pressure sensor.
  • the actual speed is adjusted with a certain control step and speed step, so as to realize real-time dynamic adjustment of the air volume of the fan, and realize constant air volume control with low cost. , High control precision, fast adjustment speed and good stability.
  • FIG. 1 is a first schematic flow chart of a fan control method provided by an embodiment of the present application.
  • FIG. 2 is a second schematic flow chart of a fan control method provided by an embodiment of the present application.
  • FIG. 3 is a third schematic flow chart of the fan control method provided by the embodiment of the present application.
  • Fig. 4 is the power of the fan under three different preset air volumes provided by the embodiment of the present application.
  • Fig. 8 is the variation situation of the actual test rotational speed in the test process provided by the embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a fan control device provided by an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of a fan device provided by an embodiment of the present application.
  • the term “if” may be contextually interpreted as “when” or “once” or “in response to determining” or “in response to detecting “.
  • the phrases “if it is determined” or “if the [described condition or event] is detected” may be interpreted, depending on the context, to mean “once it is determined” or “in response to the determination” or “once the [described condition or event] is detected. ]” or “in response to detection of the [described condition or event]”.
  • references in this specification to "one embodiment” or “some embodiments” and the like mean that a particular feature, structure or characteristic described in connection with the embodiment is included in one or more embodiments of the present application.
  • appearances of the phrases “in one embodiment,” “in some embodiments,” “in other embodiments,” “in other embodiments,” etc. in various places in this specification are not necessarily All refer to the same embodiment, but mean “one or more but not all embodiments” unless specifically emphasized otherwise.
  • the terms “including”, “including”, “having” and their variants mean “including but not limited to” unless specifically emphasized otherwise.
  • the embodiment of the present application provides a fan control method, which can be executed by the processor of the fan device when running a corresponding computer program, and is used to dynamically adjust the air volume of the fan in real time without installing an air flow meter and a static pressure sensor, Realize constant air volume control.
  • the fan equipment can be an air conditioner, a ventilation device, a blower, a wind generator, and the like.
  • the fan control method provided by the embodiment of the present application includes the following steps S101 to S104:
  • Step S101 obtain the actual rotational speed, actual power and target air volume of the fan.
  • the actual rotational speed and actual power of the fan at the current moment may be obtained, which may be obtained in real time, or may be obtained once every first preset time.
  • the target air volume is the air volume set by the user that the fan expects to achieve. Both the first preset time and the target air volume can be set by the user by inputting corresponding instructions through the human-computer interaction device of the fan equipment according to actual needs, or by sending corresponding instructions to the fan equipment through a user terminal communicatively connected to the fan equipment.
  • the human-computer interaction device of the fan device may include at least one of a physical button, a touch sensor, a gesture recognition sensor and a voice recognition unit, so that the user can use the corresponding touch method, gesture control method or voice control method Enter the command.
  • buttons and touch sensors can be placed anywhere on the fan equipment, such as the control panel.
  • the touch method for the physical button may be pressing or toggling.
  • the touch method of the touch sensor may specifically be pressing or touching.
  • the gesture recognition sensor can be arranged at any position outside the casing of the fan device.
  • the gestures used to control the fan device can be customized by the user according to actual needs or the factory default settings can be used.
  • the speech recognition unit may include a microphone and a speech recognition chip, or may only include a microphone and the processor of the fan device implements the speech recognition function.
  • the voice used to control the fan equipment can be customized by the user according to actual needs or the factory default settings can be used.
  • the user terminal can be a mobile phone, a smart bracelet, a tablet computer, a notebook computer, a netbook, a personal digital assistant (Personal Digital Assistant, PDA) and other electronic devices that have wireless communication functions and can be wirelessly connected to the fan equipment.
  • PDA Personal Digital Assistant
  • This embodiment of the present application does not impose any restrictions on the specific type of the user terminal.
  • the user can control the user terminal to send instructions to the fan device through any human-computer interaction mode supported by the user terminal.
  • the human-computer interaction mode supported by the user terminal may be the same as that of the fan device, which will not be repeated here.
  • the actual power can be calculated by the software method, and there is no need to set additional power detection devices or circuits in the fan equipment. Specifically, the actual power can be calculated according to the voltage, current and phase current of the synchronous rotating coordinate system of the fan at the actual speed. and the phase resistance to calculate the actual power.
  • the formula for calculating the actual power of the fan at each actual rotational speed is:
  • P_real is the power of the fan at the actual speed
  • Ud_real is the d-axis voltage of the fan at the actual speed
  • Uq_real is the q-axis voltage of the fan at the actual speed
  • Id_real is the d-axis current of the fan at the actual speed
  • Iq_real is The q-axis current of the fan at the actual speed
  • Is_real is the phase current of the fan at the actual speed
  • Rs_real is the phase resistance of the fan at the actual speed.
  • the mathematical calculation formula of the actual power is the formula 1.
  • the formula 1 When calculating the actual power of the fan at other actual speeds, it is only necessary to use the formula to use the voltage, current, phase current and phase current of the fan at other actual speeds. The resistance can be calculated.
  • Step S102 obtain a target power corresponding to the target air volume according to the actual rotational speed and the target air volume.
  • the target power can be obtained according to the relationship between the power, air volume and rotational speed of the fan under different preset air volumes obtained through a small amount of experimental data in advance. Calculate the power when running at multiple different preset speeds, and then perform curve fitting on the multiple different preset speeds and the power when the fan runs at multiple different preset speeds, and solve the pre-established relationship between power and speed.
  • the fitting relational expression related to the air volume is used to determine the power coefficient corresponding to a certain preset air volume in the fitting relational expression, and similarly, the power coefficient corresponding to other preset air volume in the fitting relational expression can be determined.
  • the fitting relationship related to power, rotational speed and air volume and the power coefficient corresponding to each preset air volume are known parameters uniquely determined by a small amount of experimental data in advance, for each preset air volume, it is only necessary to know
  • the preset speed of the fan at each preset air volume can be calculated according to the fitting relationship, power coefficient, air volume and speed to obtain the power of the fan at each preset air volume.
  • the calculation formula of the target power is as follows:
  • P_ref is the target power
  • V_real is the actual speed
  • Q_ref is the target air volume
  • k1_ref, k2_ref and k3_ref are the power coefficients corresponding to the target air volume Q_ref.
  • the mathematical expression of the calculation formula of the target power is formula 2.
  • Step S103 when the power difference between the actual power and the target power is not within the initial difference range, obtain the control duration and rotational speed step corresponding to the power difference.
  • the actual power and the target power are compared.
  • the power difference between the two is large (that is, the power difference is not within the initial difference range)
  • the current moment needs to be adjusted.
  • the actual speed of the fan is changed to change the actual power of the fan, so that the actual power can be close to or equal to the target power, and then the actual air volume of the fan can be adjusted so that the actual air volume of the fan can be close to or equal to the target air volume.
  • the fan control method is re-executed.
  • step S102 it includes:
  • the initial difference range can be set by the user by inputting corresponding instructions through the human-computer interaction device of the fan equipment according to actual needs, or by sending corresponding instructions to the fan equipment through the user terminal that is in communication with the fan equipment.
  • the actual air volume of the fan can be adjusted so that the deviation between the actual air volume and the target air volume is within -5% ⁇ +5%.
  • the absolute value of the power difference is negatively correlated with the control duration and positively correlated with the rotational speed step.
  • control step and the speed step are set according to the absolute value of the power difference
  • the control time determines the adjustment speed of the actual speed
  • the speed step determines the adjustment step of the actual speed.
  • the specific method for obtaining the control duration and rotational speed step corresponding to the power difference in step S102 is:
  • the power difference value when the power difference value is not in the initial difference value range, the power difference value can be further compared with the upper limit value and the lower limit value of the preset multiple preset difference value ranges, so as to determine the size of the power difference value.
  • the target difference range at (the target difference range is one of the preset multiple preset difference ranges), since the control duration and speed step corresponding to each preset difference range are preset, Therefore, when determining the target difference range in which the power difference is located, the control duration and rotational speed step corresponding to the target difference range can be directly used as the control duration and rotational speed step corresponding to the power difference.
  • the initial difference range can be one of multiple preset difference ranges that are preset, and the control duration and speed step corresponding to the initial difference range are both empty or 0, that is, when the power difference is in the initial difference range When inside, the actual speed is not adjusted.
  • the preset difference range can be set by the user by inputting corresponding instructions through the human-computer interaction device of the fan equipment according to actual needs, or by sending corresponding instructions to the fan equipment through a user terminal communicatively connected with the fan equipment.
  • Step S104 after controlling the duration, adjust the actual rotational speed according to the rotational speed step.
  • step S103 when the actual power is greater than the target power, the actual speed needs to be reduced according to the speed step; when the actual power is less than the target power, the actual speed needs to be increased according to the speed step.
  • step S104 includes:
  • steps S101 to S104 are repeatedly executed, that is, the fan control method is re-executed, and the adjustment can be ended when the actual speed remains constant for the second preset time.
  • the second preset time can be set by the user inputting corresponding instructions through the human-computer interaction device of the fan equipment according to actual needs, or by sending corresponding instructions to the fan equipment through a user terminal communicatively connected to the fan equipment.
  • step S104 it includes:
  • the embodiment shown in FIG. 1 can adjust the actual speed with a certain control step and speed step according to the actual speed, actual power and target air volume of the fan without installing an air volume meter and a static pressure sensor, thereby Real-time dynamic adjustment of the air volume of the fan is realized, constant air volume control is realized, the cost is low, the control precision is high, the adjustment speed is fast and the stability is good.
  • step S102 when the target power is obtained by using the proportional interpolation method, step S102 includes the following steps S201 to S204:
  • Step S201 determining the target air volume interval in which the target air volume is located.
  • all known preset air volumes can be divided into multiple air volume intervals, the number of all air volume intervals is equal to the number of all preset air volumes minus one, and the air volume interval can be determined by the user according to actual needs through the human-computer interaction device of the fan equipment Input corresponding instructions, or send corresponding instructions to the fan equipment through a user terminal that is in communication with the fan equipment for setting.
  • the method for dividing the air volume interval may specifically be to sort all the preset air volumes in an order from large to small or from small to large, and use the two adjacent preset air volumes in the obtained sorting sequence as the upper limit value of one air volume interval. and lower limit.
  • the five preset air volumes in descending order is Q1, Q2, Q3, Q4, and Q5
  • the five preset air volumes can be divided into [Q1, Q2), [Q2, Q3), [Q3, Q4), [Q4, Q5) have a total of 4 intervals.
  • the target air volume can be compared with the upper and lower limit values of each air volume interval to determine the target air volume interval in which the target air volume is located (the target air volume interval is one of all preset air volume intervals) .
  • step S201 includes:
  • a certain air volume interval is determined as the target air volume interval in which the target air volume is located.
  • Step S202 Obtain the first power corresponding to the maximum air volume according to the actual rotational speed, the maximum air volume in the target air volume interval, and the power coefficient corresponding to the maximum air volume.
  • the fitting can be used according to the actual rotational speed, the upper limit of the target air volume interval (that is, the maximum air volume), and the power coefficient corresponding to the upper limit determined by a small amount of experimental data in advance. Relational expression, calculate and obtain the power corresponding to the upper limit value. Specifically, each parameter in the formula 2 can be replaced with the actual rotational speed, the upper limit value of the target air volume interval, and the power coefficient corresponding to the upper limit value.
  • the calculation formula of the first power is:
  • P1 is the first power
  • V_real is the actual rotation speed
  • Q1 is the maximum air volume in the target air volume interval
  • k11, k12 and k13 are the power coefficients corresponding to the maximum air volume Q1.
  • Step S203 Obtain the second power corresponding to the minimum air volume according to the actual rotational speed, the minimum air volume in the target air volume interval, and the power coefficient corresponding to the minimum air volume.
  • the target air volume interval after the target air volume interval is determined, it can be determined according to the actual speed, the lower limit of the target air volume interval (that is, the minimum air volume), and the lower limit determined by a small amount of experimental data in advance.
  • the power coefficient corresponding to the value is calculated by using the fitting relational formula to obtain the power corresponding to the lower limit value.
  • each parameter in the formula 2 can be replaced with the actual rotational speed, the lower limit value of the target air volume interval, and the power coefficient corresponding to the lower limit value.
  • the calculation formula of the second power is:
  • P2 is the second power
  • V_real is the actual speed
  • Q2 is the minimum air volume in the target air volume interval
  • k21, k22 and k23 are the power coefficients corresponding to the minimum air volume Q2.
  • Step S204 Obtain a target power corresponding to the target air volume according to the target air volume, the maximum air volume, the minimum air volume, the first power, and the second power.
  • the target power can be obtained by means of proportional interpolation.
  • the calculation formula of the target power based on the proportional interpolation method is:
  • P_ref P2+(P1-P2)*(Q_ref-Q2)/(Q1-Q2)
  • P_ref is the target power corresponding to the target air volume
  • Q_ref is the target air volume
  • Q1 is the maximum air volume
  • Q2 is the minimum air volume
  • P1 is the first power
  • P2 is the second power.
  • the following embodiments focus on introducing the relationship between the power, the air volume and the rotational speed of the fan under different preset air volumes, and the method for obtaining the power coefficient corresponding to each preset air volume.
  • step S101 before step S101, the following steps S301 and S302 are included:
  • Step S301 under the preset air volume, obtain the power of the fan at n preset rotational speeds respectively; wherein each preset rotational speed corresponds to a static pressure, and n is an integer greater than or equal to 3.
  • each preset air volume the power of the fan at multiple preset rotational speeds corresponding to high, medium, and low static pressures can be obtained respectively.
  • Each static pressure includes at least one static pressure, and each Static pressure corresponds to a preset rotational speed.
  • the power of the fan at at least one preset speed corresponding to high static pressure, the power at at least one preset speed corresponding to medium static pressure, and the power corresponding to low static pressure are obtained.
  • the power at at least 1 preset speed of the fan is obtained, that is, the power of the fan at at least 3 preset speeds is obtained in total.
  • FIG. 4 it is exemplified that under three different preset air volumes (1620m 3 /h, 1400m 3 /h and 1180m 3 /h), the fan at three static pressures and with three static pressures Corresponding power at three preset speeds.
  • the formula for calculating the power of the fan at each preset rotational speed is:
  • P is the power of the fan at the preset speed
  • Ud is the d-axis voltage of the fan at the preset speed
  • Uq is the q-axis voltage of the fan at the preset speed
  • Id is the d-axis of the fan at the preset speed.
  • Current Iq is the q-axis current of the fan at the preset speed
  • Is is the phase current of the fan at the preset speed
  • Rs is the phase resistance of the fan at the preset speed.
  • the formula for calculating the power at the preset speed is formula 3.
  • the formula for calculating the power of the fan at the preset speed it is only necessary to use formula 3 and use the voltage, current and phase current of the fan at the preset speed. and the phase resistance can be calculated.
  • Step S302 Perform curve fitting on the preset air volume, n preset rotational speeds, and the power of the fan at n preset rotational speeds, and solve the fitting relational expression related to the power, rotational speed, and air volume, so as to determine the fitting relational expression.
  • the power factor corresponding to the preset air volume.
  • a fitting relationship that can reflect the relationship between power, rotational speed and air volume is first established in the development and testing process, and then the data associated with each preset air volume is obtained by using prior tests (for example, as shown in Figure 4).
  • data) into the fitting relational expression obtain multiple sets of fitting relational expressions corresponding to each preset air volume and solve them simultaneously (that is, solve the ternary linear equation system), and obtain the power corresponding to each preset air volume coefficient.
  • Each preset air volume and its corresponding power coefficient are pre-stored in the internal storage space of the processor, and a corresponding relationship between each preset air volume and its corresponding power coefficient is established, which can be stored internally according to the preset air volume. Find the corresponding power coefficient in the space.
  • the corresponding relationship may be a mapping relationship, and may exist in the form of a corresponding relationship table.
  • the corresponding relationship table may specifically be a look-up table (Look-Up-Table, LUT), or the corresponding relationship can be searched and output through other input data.
  • the form of the search result exists.
  • the blower device may also include a memory, which is used to equivalently replace the internal storage space to realize the data storage function.
  • the power coefficient corresponding to each preset air volume is calculated in advance in the development and testing stage, and each preset air volume and its corresponding power coefficient are written into the correspondence table, so that in the process of constant air volume control, the Find the corresponding power coefficient in the correspondence table and call it, without the need to calculate the power coefficient online in real time, which can effectively save the computing power resources and execution time of the processor.
  • the fitting relation is:
  • P is the power of the fan at the preset speed V
  • Q is the preset air volume
  • k1, k2 and k3 are power coefficients corresponding to the preset air volume Q.
  • the mathematical expression of the fitting relationship is formula 4.
  • the power-rotation speed curve of the fan under each preset air volume can be drawn.
  • FIG. 6 three fitting curves corresponding to three different preset air volumes (1620 m 3 /h, 1400 m 3 /h and 1180 m 3 /h) are exemplarily shown; wherein, the horizontal axis represents the rotational speed ( The unit is 100RPM (Revolutions Per Minute, revolutions per minute)), the vertical axis represents the power (the unit is 0.01W (Watt)), low represents the low air volume 1180 m 3 /h, mid represents the medium air volume 1400 m 3 /h, high represents High air volume 1620 m 3 /h.
  • the horizontal axis represents the rotational speed ( The unit is 100RPM (Revolutions Per Minute, revolutions per minute)
  • the vertical axis represents the power (the unit is 0.01W (Watt))
  • low represents the low air volume 1180 m 3 /h
  • mid represents the medium air volume 1400 m 3 /h
  • high represents High air volume 1620 m 3 /h.
  • the preset test air volume for testing can also be sent to the fan, and then the preset test static pressure for testing is controlled by the air volume table, and then The same method as the above-mentioned fan control method is used to control the constant air volume of the fan.
  • the actual test air volume actually measured under each preset test air volume and each preset test static pressure of the fan is obtained, and then The air volume accuracy is obtained according to the preset test air volume and the actual test air volume, and the air volume accuracy is equal to the difference between the actual test air volume and the preset test air volume divided by the preset test air volume.
  • step S302 the following test steps are included after step S302:
  • the air volume accuracy is obtained according to the preset test air volume and the actual test air volume, and the air volume accuracy is equal to the difference between the actual test air volume and the preset test air volume divided by the preset test air volume.
  • the preset test static pressure can be changed, and the above test steps can be repeated to obtain the fan in the same preset test.
  • Air volume and air volume accuracy at static pressures for multiple different preset tests By changing the preset test air volume and repeating the steps of obtaining the air volume accuracy of the fan under the same preset test air volume and multiple different preset test static pressures, the fan can be obtained under multiple different preset test air volumes and with each The air volume accuracy under a plurality of different preset test static pressures corresponding to each preset test air volume.
  • the preset test air volume can be set by the user by inputting corresponding instructions through the human-computer interaction device of the fan equipment according to actual needs, or by sending corresponding instructions to the fan equipment through a user terminal communicatively connected with the fan equipment.
  • three corresponding preset test air volumes are exemplarily shown Air volume accuracy under different preset test static pressures.
  • FIG 8 it exemplarily shows the change of the actual test speed during the test; wherein, the vertical axis represents the actual test speed (unit is RPM), and the abscissa represents time.
  • the test air volume to 750 m 3 /h, and use the fan control method to adjust the actual test speed, and the actual test speed is 880 RPM; in the second stage, block some air inlets of the fan to reduce the air intake, and use the fan control method to adjust the actual test speed.
  • the actual test speed was 1066RPM
  • the air intake was increased relative to the second stage, and after adjusting the actual test speed by the fan control method, the actual test speed was 920RPM
  • the intake air was reduced relative to the third stage, After using the fan control method to adjust the actual test speed, the actual test speed is 1059RPM; in the fifth stage, the intake air is increased relative to the fourth stage, and after the fan control method is used to adjust the actual test speed, the actual test speed is 970RPM.
  • the adjustment speed of the actual speed of the fan is very fast (each digital quantity on the abscissa corresponds to 3s (second) time), for example, the dynamic change from the first stage to the second stage takes 66s, and the dynamic change from the second stage takes 66s. It takes 45s to change to the third stage, 60s from the third stage dynamic change to the fourth stage stability, 42s from the fourth stage dynamic change to the fifth stage stability, the actual speed adjustment is very stable, there is almost no overshoot and overshoot It takes into account the speed and stability of the air volume adjustment.
  • Embodiments of the present application further provide a fan control device, which is applied to fan equipment and used to execute the method steps in the above method embodiments.
  • the appliance may be a virtual appliance in the fan appliance, run by the processor of the fan appliance, or the fan appliance itself.
  • the fan control device 100 provided in the embodiment of the present application includes:
  • the first obtaining unit 101 is used to obtain the actual rotational speed, actual power and target air volume of the fan;
  • a power calculation unit 102 configured to obtain a target power corresponding to the target air volume according to the actual rotational speed and the target air volume;
  • the second obtaining unit 103 is configured to obtain a control duration and a rotational speed step corresponding to the power difference when the power difference between the actual power and the target power is not within the initial difference range;
  • the rotational speed adjusting unit 104 is configured to adjust the actual rotational speed according to the rotational speed step after the control time period.
  • the fan control device further includes:
  • the fan control device further includes:
  • the third obtaining unit is configured to obtain the power of the fan at n preset rotational speeds under the preset air volume; wherein, each preset rotational speed corresponds to a static pressure, and n is an integer greater than or equal to 3;
  • the curve fitting unit is used to perform curve fitting on the preset air volume, n preset rotational speeds, and the power of the fan at n preset rotational speeds, and solve the fitting relationship related to the power, rotational speed and air volume to determine the fitting relationship.
  • the first obtaining unit is further configured to obtain the actual test rotational speed and actual test power of the fan under the preset test air volume and the preset test static pressure;
  • the power calculation unit is further configured to obtain the target test power corresponding to the preset test air volume according to the actual test speed and the preset test air volume;
  • the second obtaining unit is further configured to obtain a control duration and a rotational speed step corresponding to the power difference when the power difference between the actual test power and the target test power is not within the initial difference range;
  • the speed adjustment unit is also used to adjust the actual test speed according to the speed step after the control time period;
  • the third obtaining unit is used to obtain the actual test power and the actual measured air volume of the fan;
  • the air volume calculation unit is used to obtain the air volume accuracy according to the preset test air volume and the actual test air volume, and the air volume accuracy is equal to the difference between the actual test air volume and the preset test air volume divided by the preset test air volume.
  • each unit in the fan control device may be a software program unit, or may be implemented by different logic circuits integrated in the processor or independent physical components connected to the processor, or may be implemented by multiple distributed processors.
  • an embodiment of the present application further provides a fan device 200 , including: at least one processor 201 (only one processor is shown in FIG. 10 ), a memory 202 , and a fan device 200 stored in the memory 202 and available in at least one
  • the computer program 203 running on the processor 201 further includes the fan 204 when the processor 201 executes the computer program 203 to implement the steps in the foregoing method embodiments.
  • fan equipment may include, but is not limited to, fans, memories, processors, and the like.
  • FIG. 10 is only an example of a fan device, and does not constitute a limitation to the fan device, and may include more or less components than the one shown in the figure, or combine some components, or different components, such as , and may also include input and output devices, network access devices, and so on.
  • the input and output device may include the aforementioned human-computer interaction device, and may also include a display screen for displaying the working parameters of the fan device.
  • the network access device may include a communication unit for the wind turbine device to communicate with the aforementioned user terminal.
  • the processor may be a central processing unit (Central Processing Unit, CPU), and the processor may also be other general-purpose processors, digital signal processors (Digital Signal Processors, DSP), application-specific integrated circuits (Application Specific Integrated Circuit, ASIC), Field-Programmable Gate Array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
  • a general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the memory may in some embodiments be an internal storage unit of the wind turbine device, eg, a hard disk or memory of the wind turbine device.
  • the memory can also be an external storage device of the fan device, for example, a plug-in hard disk equipped on the fan device, a Smart Media Card (SMC), a Secure Digital (SD) card, and a flash memory. Card (Flash Card), etc.
  • the memory may also include both an internal storage unit of the wind turbine device and an external storage device.
  • the memory is used to store an operating device, an application program, a boot loader (Boot Loader), data, and other programs, such as program code of a computer program, and the like.
  • the memory may also be used to temporarily store data that has been or will be output.
  • the display can be a thin film transistor liquid crystal display (Thin Film Transistor Liquid Crystal Display, TFT-LCD), a liquid crystal display (Liquid Crystal Display, LCD), organic electroluminesence display (Organic Electroluminesence Display, OLED), quantum dot light-emitting diode (Quantum Dot Light Emitting Diodes, QLED) display, seven-segment or eight-segment digital tube, etc.
  • TFT-LCD Thiviole Film Transistor Liquid Crystal Display
  • LCD liquid crystal display
  • organic electroluminesence display Organic Electroluminesence Display, OLED
  • quantum dot light-emitting diode Quantum Dot Light Emitting Diodes, QLED
  • the communication unit can be set as any device that can directly or indirectly perform long-distance wired or wireless communication with the user terminal according to actual needs.
  • the communication unit can provide wireless local area networks (Wireless Localarea Networks, WLAN) (such as Wi-Fi network), Bluetooth, Zigbee, mobile communication network, Global Navigation Satellite System (GNSS), Frequency Modulation (Frequency) Modulation, FM), near field communication technology (Near Field Communication, NFC), infrared technology (Infrared, IR) and other communication solutions.
  • WLAN Wireless Localarea Networks
  • GNSS Global Navigation Satellite System
  • Frequency Modulation Frequency Modulation
  • FM near field communication technology
  • NFC Near Field Communication
  • Infrared, IR infrared technology
  • the communication unit may include an antenna, and the antenna may have only one array element, or may be an antenna array including multiple array elements.
  • the communication unit can receive electromagnetic waves through the antenna, frequency modulate and filter the electromagnetic wave signals, and send the processed signals to the processor.
  • the communication unit can also receive the signal to be sent from the processor, perform frequency modulation and amplification on it, and then convert it into electromagnetic waves for radiation through the antenna.
  • Embodiments of the present application further provide a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and when the computer program is executed by a processor, the steps in the foregoing method embodiments can be implemented.
  • the embodiments of the present application provide a computer program product, which enables the fan device to implement the steps in the foregoing method embodiments when the computer program product runs on the fan device.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as an independent product, may be stored in a computer-readable storage medium.
  • all or part of the processes in the methods of the above embodiments can be implemented by a computer program to instruct the relevant hardware.
  • the computer program can be stored in a computer-readable storage medium, and the computer program can be processed When the device is executed, the steps of the foregoing method embodiments may be implemented.
  • the computer program includes computer program code, and the computer program code may be in the form of source code, object code, executable file or some intermediate form, and the like.
  • the computer-readable medium may include at least: any entity or device capable of carrying the computer program code to the fan equipment, a recording medium, a computer memory, a read-only memory (ROM, Read-Only). Memory), random access memory (RAM, Random Access Memory), electric carrier signal, telecommunication signal and software distribution medium.
  • a recording medium e.g., a hard disk, disk or CD, etc.
  • the disclosed apparatus and method may be implemented in other manners.
  • the apparatus embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or May be integrated into another device, or some features may be omitted, or not implemented.
  • the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Control Of Positive-Displacement Air Blowers (AREA)

Abstract

一种风机（204）控制方法、装置及风机设备（200），通过获取风机（204）的实际转速、实际功率以及目标风量；根据实际转速和目标风量，获取与目标风量对应的目标功率；当实际功率与目标功率之间的功率差值不在初始差值范围内时，获取与功率差值对应的控制时长和转速步长；在控制时长之后，根据转速步长调节实际转速，能够在无需安装风量计和静压传感器的情况下，根据风机（204）的实际转速、实际功率以及目标风量，以一定的控制时长和转速步长对实际转速进行调节，从而实现对风机（204）的风量进行实时动态调节，实现恒风量控制，成本低、控制精度高、调节速度快且平稳性好。

Description

一种风机控制方法、装置及风机设备
本申请要求于2021年03月16日在中国国家专利局提交的、申请号为202110280245.4、发明名称为“一种风机控制方法、装置及风机设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请属于风机技术领域，尤其涉及一种风机控制方法、装置及风机设备。
 背景技术
风机是依靠输入的机械能，提高气体压力并排送气体的机械，广泛应用于空调器、通风装置、鼓风机、风力发电机等风机设备。在风机的工作过程中，通常需要实现对风机的恒风量控制，现有的一些技术采用直接安装风量计或静压传感器的方式来实现，成本高且存在潜在的风量计或静压传感器失效所导致控制失败的风险；另一些技术采用无风量计的恒风量控制方法，存在计算量大或无法实时动态调节的问题。
 技术问题
本申请实施例的目的之一在于：提供一种风机控制方法、装置及风机设备，能够在无需安装风量计和静压传感器的情况下，对风机的风量进行实时动态调节，实现恒风量控制，成本低、控制精度高且平稳性好。
 技术解决方案
为了解决上述技术问题，本申请实施例采用的技术方案是：
本申请实施例的第一方面提供一种风机控制方法，包括：
获取风机的实际转速、实际功率以及目标风量；
根据所述实际转速和所述目标风量，获取与所述目标风量对应的目标功率；
当所述实际功率与所述目标功率之间的功率差值不在初始差值范围内时，获取与所述功率差值对应的控制时长和转速步长；
在所述控制时长之后，根据所述转速步长调节所述实际转速。
本申请实施例的第二方面提供一种风机控制装置，包括：
第一获取单元，用于获取风机的实际转速、实际功率以及目标风量；
功率计算单元，用于根据所述实际转速和所述目标风量，获取与所述目标风量对应的目标功率；
第二获取单元，用于当所述实际功率与所述目标功率之间的功率差值不在初始差值范围内时，获取与所述功率差值对应的控制时长和转速步长；
转速调节单元，用于在所述控制时长之后，根据所述转速步长调节所述实际转速。
本申请实施例的第三方面提供一种风机设备，包括风机、存储器、处理器以及存储在所述存储器中并可在所述处理器上运行的计算机程序，所述处理器执行所述计算机程序时实现本申请实施例的第一方面所述风机控制方法的步骤。
本申请实施例的第四方面提供一种计算机可读存储介质，所述计算机可读存储介质存储有计算机程序，所述计算机程序被处理器执行时实现如本申请实施例的第一方面所述风机控制方法的步骤。
 有益效果
本申请实施例的第一方面提供的风机控制方法，通过获取风机的实际转速、实际功率以及目标风量；根据实际转速和目标风量，获取与目标风量对应的目标功率；当实际功率与目标功率之间的功率差值不在初始差值范围内时，获取与功率差值对应的控制时长和转速步长；在控制时长之后，根据转速步长调节实际转速，能够在无需安装风量计和静压传感器的情况下，根据风机的实际转速、实际功率以及目标风量，以一定的控制步长和转速步长对实际转速进行调节，从而实现对风机的风量进行实时动态调节，实现恒风量控制，成本低、控制精度高、调节速度快且平稳性好。
可以理解的是，上述第二方面至第四方面的有益效果可以参见上述第一方面中的相关描述，在此不再赘述。
 附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本申请实施例提供的风机控制方法的第一种流程示意图；
图2是本申请实施例提供的风机控制方法的第二种流程示意图；
图3是本申请实施例提供的风机控制方法的第三种流程示意图；
图4是本申请实施例提供的在三个不同的预设风量下的风机的功率；
图5是本申请实施例提供的与三个不同的预设风量对应的功率系数；
图6是本申请实施例提供的与三个不同的预设风量对应的三条拟合曲线；
图7是本申请实施例提供的在三个不同的预设测试风量下的风量精度；
图8是本申请实施例提供的测试过程中实际测试转速的变化情况；
图9是本申请实施例提供的风机控制装置的结构示意图；
图10是本申请实施例提供的风机设备的结构示意图。
 本发明的实施方式
以下描述中，为了说明而不是为了限定，提出了诸如特定装置结构、技术之类的具体细节，以便透彻理解本申请实施例。然而，本领域的技术人员应当清楚，在没有这些具体细节的其它实施例中也可以实现本申请。在其它情况中，省略对众所周知的装置、装置、电路以及方法的详细说明，以免不必要的细节妨碍本申请的描述。
应当理解，当在本申请说明书和所附权利要求书中使用时，术语“包括”指示所描述特征、整体、步骤、操作、元素和/或组件的存在，但并不排除一个或多个其它特征、整体、步骤、操作、元素、组件和/或其集合的存在或添加。
还应当理解，在本申请说明书和所附权利要求书中使用的术语“和/或”是指相关联列出的项中的一个或多个的任何组合以及所有可能组合，并且包括这些组合。
如在本申请说明书和所附权利要求书中所使用的那样，术语“如果”可以依据上下文被解释为“当...时”或“一旦”或“响应于确定”或“响应于检测到”。类似地，短语“如果确定”或“如果检测到[所描述条件或事件]”可以依据上下文被解释为意指“一旦确定”或“响应于确定”或“一旦检测到[所描述条件或事件]”或“响应于检测到[所描述条件或事件]”。
另外，在本申请说明书和所附权利要求书的描述中，术语“第一”、“第二”、“第三”等仅用于区分描述，而不能理解为指示或暗示相对重要性。
在本申请说明书中描述的参考“一个实施例”或“一些实施例”等意味着在本申请的一个或多个实施例中包括结合该实施例描述的特定特征、结构或特点。由此，在本说明书中的不同之处出现的语句“在一个实施例中”、“在一些实施例中”、“在其他一些实施例中”、“在另外一些实施例中”等不是必然都参考相同的实施例，而是意味着“一个或多个但不是所有的实施例”，除非是以其他方式另外特别强调。术语“包括”、“包含”、“具有”及它们的变形都意味着“包括但不限于”，除非是以其他方式另外特别强调。
本申请实施例提供一种风机控制方法，可以由风机设备的处理器在运行对应的计算机程序时执行，用于无需安装风量计和静压传感器的情况下，对风机的风量进行实时动态调节，实现恒风量控制。风机设备可以是空调器、通风装置、鼓风机、风力发电机等。
如图1所示，本申请实施例提供的风机控制方法，包括如下步骤S101至S104：
步骤S101、获取风机的实际转速、实际功率以及目标风量。
在应用中，在风机运行过程中，获取当前时刻风机的实际转速和实际功率，具体可以是实时获取，也可以是每间隔第一预设时间获取一次。目标风量是用户设定的期望风机能够达到的风量。第一预设时间和目标风量都可以由用户根据实际需要通过风机设备的人机交互器件输入相应指令，或者，通过与风机设备通信连接的用户终端向风机设备发送相应指令进行设置。
在应用中，风机设备的人机交互器件可以包括实体按键、触控传感器、手势识别传感器和语音识别单元中的至少一种，使得用户可以通过对应的触控方式、手势操控方式或语音控制方式输入指令。
在应用中，实体按键和触控传感器可以设置于风机设备的任意位置，例如，控制面板。对实体按键的触控方式具体可以是按压或拨动。对触控传感器的触控方式具体可以为按压或触摸等。
在应用中，手势识别传感器可以设置在风机设备的壳体外部的任意位置。用于控制风机设备的手势可以由用户根据实际需要自定义设置或者采用出厂时的默认设置。
在应用中，语音识别单元可以包括麦克风和语音识别芯片，也可以仅包括麦克风并由风机设备的处理器来实现语音识别功能。用于控制风机设备的语音可以由用户根据实际需要自定义设置或者采用出厂时的默认设置。
在应用中，用户终端可以是手机、智能手环、平板电脑、笔记本电脑、上网本、个人数字助理（Personal Digital Assistant，PDA）等具有无线通信功能，能够与风机设备进行无线通信连接的电子设备，本申请实施例对用户终端的具体类型不作任何限制。用户可以通过用户终端所支持的任意人机交互方式控制用户终端向风机设备发送指令。用户终端所支持的人机交互方式可以与风机设备相同，此处不再赘述。
在应用中，实际功率可以通过软件方法计算得到，无需在风机设备中额外设置功率检测器件或电路，具体的，实际功率可以根据风机在实际转速下的同步旋转坐标系的电压、电流、相电流以及相电阻，来计算实际功率。
在一个实施例中，风机在每个实际转速下的实际功率的计算公式为：
P_real =1.5(Ud_real *Id_real +Uq_real *Iq_real)-3*Rs_real *Is_real^2（公式一）
其中，P_real为风机在实际转速下的功率，Ud_real为风机在实际转速下的d轴电压，Uq_real为风机在实际转速下的q轴电压，Id_real为风机在实际转速下的d轴电流，Iq_real为风机在实际转速下的q轴电流，Is_real为风机在实际转速下的相电流，Rs_real为风机在实际转速下的相电阻。
在应用中，实际功率的数学计算公式即为公式一，在计算风机在其他实际转速下的实际功率时，只需利用公式一并采用风机在其他实际转速下的电压、电流、相电流以及相电阻进行计算即可。
步骤S102、根据实际转速和目标风量，获取与目标风量对应的目标功率。
在应用中，目标功率可以根据事先通过少量实验数据获得的风机在不同预设风量下的功率、风量以及转速之间的关系式获取，具体的，事先可以通过测试获得风机在某一预设风量下分别以多个不同预设转速运行时的功率，然后对这多个不同预设转速以及风机分别以多个不同预设转速运行时的功率进行曲线拟合，求解预先建立的与功率、转速和风量相关的拟合关系式，以确定拟合关系式中与某一预设风量对应的功率系数，同理，可以确定拟合关系式中与其他预设风量对应的功率系数。由于与功率、转速和风量相关的拟合关系式以及与每个预设风量对应的功率系数都是事先通过少量实验数据唯一确定的已知参数，因此，针对每个预设风量，只需要获知风机在每个预设风量下的预设转速，即可根据拟合关系式、功率系数、风量及转速，计算获得风机在每个预设风量下的功率。
在一个实施例中，目标功率的计算公式如下：
P_ref = k1_ref *Q_ref *V_real +k2_ref *Q_ref ^2+k3_ref *V_real ^3（公式二）
其中，P_ref为目标功率，V_real为实际速度，Q_ref为目标风量，k1_ref、k2_ref以及k3_ref为与目标风量Q_ref对应的功率系数。
在应用中，目标功率的计算公式的数学表达形式即为公式二，在计算风机在预设风量和预设转速下的功率时，只需将功率系数替换为与预设风量对应的功率系数，并将目标风量和实际速度替换为预设风量和预设转速即可。
步骤S103、当实际功率与目标功率之间的功率差值不在初始差值范围内时，获取与功率差值对应的控制时长和转速步长。
在应用中，在获得目标功率之后，比较实际功率与目标功率的大小，当两者之间的功率差值较大（也即功率差值不在初始差值范围内）时，则需要调节当前时刻风机的实际转速，以改变风机的实际功率，使得实际功率能够接近或等于目标功率，进而实现对风机的实际风量的调节，使得风机的实际风量能够接近或等于目标风量。
在应用中，当实际功率与目标功率之间的功率差值较小（也即功率差值在初始差值范围内）时，表明当前时刻风机的实际风量接近或等于目标风量，无需调节当前时刻风机的实际转速，此时，可以保持风机的实际转速不变，用户设置的目标风量发生改变时，再重新执行风机控制方法。
在一个实施例中，步骤S102之后，包括：
当实际功率与目标功率之间的功率差值在初始差值范围内时，返回执行步骤S101。
在应用中，初始差值范围可以由用户根据实际需要通过风机设备的人机交互器件输入相应指令，或者，通过与风机设备通信连接的用户终端向风机设备发送相应指令进行设置，例如，初始差值范围为-A*目标风量~+A*目标风量，其中，A的取值由对风机进行恒风量控制的控制精度的要求决定，控制精度越高，A的值越小，例如，A=5%，表示控制精度为5%，对风机进行恒风量控制之后，可以将风机的实际风量调节为与目标风量之间的偏差在-5%~+5%以内。
在一个实施例中，功率差值的绝对值与控制时长负相关且与转速步长正相关。
在应用中，控制步长和转速步长根据功率差值的绝对值的大小进行设置，控制时长决定了实际转速的调节速度，转速步长决定了实际转速的调节步长。功率差值的绝对值越大，表明目标风量与实际风量之间的偏差越大，因此，控制时长需要设置得越短以加快转速调节速度，转速步长需要设置得越大以增大转速调节步长，从而可以提高转速调节速度，进而提高风量调节速度，以快速的将实际风量调节为目标风量，最终提高恒风量控制的速度。
在一个实施例中，步骤S102中获取与功率差值对应的控制时长和转速步长的具体方法为：
确定功率差值所处的目标差值范围；
根据目标差值范围，获取与功率差值对应的控制时长和转速步长。
在应用中，当功率差值不在初始差值范围时，可以进一步比较功率差值与预先设定的多个预设差值范围的上限值和下限值的大小，以确定功率差值所处的目标差值范围（目标差值范围为预先设定的多个预设差值范围中的一个），由于预先设定好与每个预设差值范围对应的控制时长和转速步长，因此，当确定功率差值所处的目标差值范围时，即可直接将与目标差值范围对应的控制时长和转速步长，作为与功率差值对应的控制时长和转速步长。初始差值范围可以为预先设定的多个预设差值范围中的一个，初始差值范围对应的控制时长和转速步长均为空或0，也即在功率差值处于初始差值范围内时，不对实际转速进行调节。预设差值范围可以由用户根据实际需要通过风机设备的人机交互器件输入相应指令，或者，通过与风机设备通信连接的用户终端向风机设备发送相应指令进行设置。
步骤S104、在控制时长之后，根据转速步长调节实际转速。
在应用中，在步骤S103的基础上，当实际功率大于目标功率时，需要根据转速步长降低实际转速；当实际功率小于目标功率时，需要根据转速步长提高实际转速。
在一个实施例中，步骤S104包括：
当实际功率大于目标功率时，在控制时长之后，将实际转速减小转速步长；
当实际功率小于目标功率时，在控制时长之后，将实际转速增加转速步长。
在应用中，本次调节完实际转速之后，重复执行步骤S101至S104，也即重新执行风机控制方法，直到实际转速保持恒定不变且持续第二预设时间时，可以结束调节。第二预设时间可以由用户根据实际需要通过风机设备的人机交互器件输入相应指令，或者，通过与风机设备通信连接的用户终端向风机设备发送相应指令进行设置。
在一个实施例中，步骤S104之后，包括：
返回执行步骤S101，直到实际转速保持恒定不变且持续第二预设时间时为止。
图1所示的实施例能够在无需安装风量计和静压传感器的情况下，根据风机的实际转速、实际功率以及目标风量，以一定的控制步长和转速步长对实际转速进行调节，从而实现对风机的风量进行实时动态调节，实现恒风量控制，成本低、控制精度高、调节速度快且平稳性好。
在应用中，由于事先已经通过少量实验数据确定与功率、转速和风量相关的拟合关系式以及与每个预设风量对应的功率系数，因此，也可以通过与目标风量接近的两个预设风量对应的功率，采用等比例插值的方法获得目标功率。
如图2所示，在一个实施例中，当采用等比例插值的方法获得目标功率时，步骤S102包括如下步骤S201至S204：
步骤S201、确定目标风量所处的目标风量区间。
在应用中，可以将已知所有预设风量划分成多个风量区间，所有风量区间的数量等于所有预设风量的数量减一，风量区间可以由用户根据实际需要通过风机设备的人机交互器件输入相应指令，或者，通过与风机设备通信连接的用户终端向风机设备发送相应指令进行设置。风量区间的划分方法具体可以为对所有预设风量按照由大到小或由小到大的顺序进行排序，将获得的排序序列中相邻的两个预设风量作为一个风量区间的上限值和下限值。例如，5个预设风量按照由大到小的顺序排列成的排序序列为Q1、Q2、Q3、Q4、Q5，则可以将这5个预设风量划分为[Q1,Q2)、[Q2,Q3)、[Q3,Q4)、[Q4,Q5)共4个区间。
在应用中，可以比较目标风量与每个风量区间的上限值和下限值的大小，以确定目标风量所处的目标风量区间（目标风量区间为预先设定的所有风量区间中的一个）。
在一个实施例中，步骤S201包括：
分别比较目标风量与多个不同的风量区间的最大风量和最小风量之间的大小；
当目标风量大于某一风量区间的最小风量且小于或等于最大风量时，确定某一风量区间为目标风量所处的目标风量区间。
步骤S202、根据实际转速、目标风量区间的最大风量以及与最大风量对应的功率系数，获取与最大风量对应的第一功率。
在应用中，在确定目标风量区间之后，即可根据实际转速、目标风量区间的上限值（也即最大风量）以及事先通过少量实验数据确定的与上限值对应的功率系数，利用拟合关系式，计算获得与上限值对应的功率。具体的，将公式二中的各参数替换为实际转速、目标风量区间的上限值以及与上限值对应的功率系数即可。
在一个实施例中，第一功率的计算公式为：
P1= k11*Q1*V_real+k12*Q1^2+k13*V_real^3
其中，P1为第一功率，V_real为实际转速、Q1为目标风量区间的最大风量，k11、k12以及k13为与最大风量Q1对应的功率系数。
步骤S203、根据实际转速、目标风量区间的最小风量以及与最小风量对应的功率系数，获取与最小风量对应的第二功率。
在应用中，与第一功率的计算原理相同，在确定目标风量区间之后，即可根据实际转速、目标风量区间的下限值（也即最小风量）以及事先通过少量实验数据确定的与下限值对应的功率系数，利用拟合关系式，计算获得与下限值对应的功率。具体的，将公式二中的各参数替换为实际转速、目标风量区间的下限值以及与下限值对应的功率系数即可。
在一个实施例中，第二功率的计算公式为：
P2= k21*Q2*V_real+k22*Q2^2+k23*V_real^3
其中，P2为第二功率，V_real为实际转速、Q2为目标风量区间的最小风量，k21、k22以及k23为与最小风量Q2对应的功率系数。
步骤S204、根据目标风量、最大风量、最小风量、第一功率以及第二功率，获取与目标风量对应的目标功率。
在应用中，在获得第一功率和第二功率之后，即可采用等比例插值的方法获得目标功率。
在一个实施例中，基于等比例插值的方法的目标功率的计算公式为：
P_ref = P2+(P1-P2)*(Q_ref-Q2)/(Q1-Q2)
其中，P_ref为与目标风量对应的目标功率，Q_ref为目标风量，Q1为最大风量，Q2为最小风量，P1为第一功率，P2为第二功率。
下述实施例着重介绍风机在不同预设风量下的功率、风量和转速之间的关系式以及与每个预设风量对应的功率系数的获取方法。
如图3所示，在一个实施例中，步骤S101之前，包括如下步骤S301和S302：
步骤S301、在预设风量下，分别获取风机在n个预设转速下的功率；其中，每个预设转速对应一个静压，n为大于或等于3的整数。
在应用中，针对每个预设风量，可以分别获取风机在与高、中、低三种静压对应的多个个预设转速下的功率，每种静压包括至少一个静压，每个静压对应一个预设转速。具体的，针对每个预设风量，获取风机在与高静压对应的至少1个预设转速下的功率、与中静压对应的至少1个预设转速下的功率以及与低静压对应的至少1个预设转速下的功率，也即一共获取风机在至少3个预设转速下的功率。
如图4所示，示例性的示出了在三个不同的预设风量（1620m 3/h、1400m 3/h和1180m 3/h）下，风机在三个静压以及与三个静压对应的三个预设转速下的功率。
在一个实施例中，风机在每个预设转速下的功率的计算公式为：
P=1.5(Ud*Id+Uq*Iq)-3*Rs*Is^2（公式三）
其中，P为风机在预设转速下的功率，Ud为风机在预设转速下的d轴电压，Uq为风机在预设转速下的q轴电压，Id为风机在预设转速下的d轴电流，Iq为风机在预设转速下的q轴电流，Is为风机在预设转速下的相电流，Rs为风机在预设转速下的相电阻。
在应用中，预设转速下的功率的计算公式即为公式三，在计算风机在预设转速下的功率时，只需利用公式三并采用风机在预设转速下的电压、电流、相电流以及相电阻进行计算即可。
步骤S302、对预设风量、n个预设转速以及风机在n个预设转速下的功率进行曲线拟合，求解与功率、转速和风量相关的拟合关系式，以确定拟合关系式中与预设风量对应的功率系数。
在应用中，首先在开发测试过程中建立能够反应功率、转速以及风量之间的关系的拟合关系式，然后采用事先测试得到与每个预设风量的数据（例如，图4中所示的数据）代入该拟合关系式，获得与每个预设风量对应的多组拟合关系式并进行联立求解（也即求解三元一次方程组），得到与每个预设风量对应的功率系数。处理器的内部存储空间中预先储存有每个预设风量及其对应的功率系数，并建立有每个预设风量及其对应的功率系数之间的对应关系，可以根据预设风量在内部存储空间中查找到对应的功率系数。该对应关系具体可以为映射关系，可以以对应关系表的形式存在，对应关系表具体可以是显示查找表（Look-Up-Table，LUT），也可以通过其他输入数据即可查找并输出对应的查找结果的形式存在。风机设备也可以包括存储器，用于等效替换内部存储空间实现数据存储功能。通过在开发测试阶段提前计算得到与每个预设风量对应的功率系数，并将每个预设风量及其对应的功率系数写入对应关系表，以便在恒风量控制过程中可以直接根据风量从对应关系表中查找对应的功率系数并调用，而不需要实时在线计算功率系数，可以有效节省处理器的算力资源和执行时间。
在一个实施例中，拟合关系式为：
P= k1*Q*V+k2*Q^2+k3*V^3（公式四）
其中，P为风机在预设转速V下的功率，Q为预设风量，k1、k2以及k3为与预设风量Q对应的功率系数。
在应用中，拟合关系式的数学表达形式即为公式四，在计算与预设风量对应的功率系数时，只需利用公式二并采用风机在预设风量下的预设速度和预设风量进行计算即可。
如图5所示，示例性的示出了与三个不同的预设风量（1620m 3/h（立方米每小时）、1400m 3/h和1180m 3/h）对应的功率系数k1、k2和k3。
在应用中，在获得与每个预设风量对应的功率系数之后，即可画出风机在每个预设风量下的功率-转速曲线。
如图6所示，示例性的示出了与三个不同的预设风量（1620m 3/h、1400m 3/h和1180m 3/h）对应的三条拟合曲线；其中，横轴表示转速（单位为100RPM（Revolutions Per Minute，转每分）），纵轴表示功率（单位为0.01W（瓦）），low表示低风量1180 m 3/h，mid表示中风量1400 m 3/h，high表示高风量1620 m 3/h。
由图6可以看出，拟合曲线的拟合度相当好，说明每个预设风量下的功率系数k1~k3的取值符合要求。
在应用中，在开发测试过程中确定与预设风量对应的功率系数之后，还可以向风机发送用于测试的预设测试风量，然后通过风量台控制用于测试的预设测试静压，然后采用与上述风机控制方法相同的方法对风机进行恒风量控制，在恒风量控制完成之后，获取风机在每个预设测试风量和每个预设测试静压下实际测量得到的实际测试风量，然后根据预设测试风量和实际测试风量获得风量精度，风量精度等于实际测试风量与预设测试风量的差值除以预设测试风量。
在一个实施例中，步骤S302之后包括如下测试步骤：
在预设测试风量和预设测试静压下，获取风机的实际测试转速和实际测试功率；
根据实际测试转速和预设测试风量，获取与预设测试风量对应的目标测试功率；
当实际测试功率与目标测试功率之间的功率差值不在初始差值范围内时，获取与功率差值对应的控制时长和转速步长；
在控制时长之后，根据转速步长调节实际测试转速；
获取风机的实际测试功率和实际测量风量；
根据预设测试风量和实际测试风量获得风量精度，风量精度等于实际测试风量与预设测试风量的差值除以预设测试风量。
在应用中，在开发测试过程中获得预设测试风量和预设测试静压下的风量精度之后，即可改变预设测试静压，并重复执行上述测试步骤，获得风机在同一个预设测试风量和多个不同预设测试静压下的风量精度。通过改变预设测试风量，并重复执行获得风机在同一个预设测试风量和多个不同预设测试静压下的风量精度的步骤，即可获得风机在多个不同预设测试风量和与每个预设测试风量对应的多个不同预设测试静压下的风量精度。预设测试风量可以由用户根据实际需要通过风机设备的人机交互器件输入相应指令，或者，通过与风机设备通信连接的用户终端向风机设备发送相应指令进行设置。如图7所示，示例性的示出了在三个不同的预设测试风量（1620m 3/h、1400m 3/h和1180m 3/h）下，与每个预设测试风量对应的三个不同预设测试静压下的风量精度。
由图7可以看出，不同预设测试风量及不同预设测试静压下的恒风量控制精度都在5%以内，说明风机控制方法能实现控制精度高的恒风量控制。
如图8所示，示例性的示出了测试过程中实际测试转速的变化情况；其中，纵轴表示实际测试转速（单位为RPM），横坐标表示时间，在第一阶段，启动风机，预设测试风量为750 m 3/h，采用风机控制方法调节实际测试转速之后，实际测试转速为880RPM；在第二阶段，挡住风机的部分进风口，减少进风，采用风机控制方法调节实际测试转速之后，实际测试转速为1066RPM；在第三阶段，相对第二阶段增加进风，采用风机控制方法调节实际测试转速之后，实际测试转速为920RPM；在第四阶段，相对第三阶段减少进风，采用风机控制方法调节实际测试转速之后，实际测试转速为1059RPM；在第五阶段，相对第四阶段增加进风，采用风机控制方法调节实际测试转速之后，实际测试转速为970RPM。
由图8可以看出，风机的实际转速的调节速度很快（横坐标每个数字量对应3s（秒）时间），比如从第一阶段动态变化到第二阶段用时66s，从第二阶段动态变化到第三阶段用时45s，从第三阶段动态变化到第四阶段稳定用时60s，从第四阶段动态变化到第五阶段稳定用时42s，实际转速的调节很平稳，几乎没有超调与过冲的情况，兼顾了风量调节的速度与平稳性。
应理解，上述实施例中各步骤的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。
本申请实施例还提供一种风机控制装置，应用于风机设备，用于执行上述方法实施例中的方法步骤。该装置可以是风机设备中的虚拟装置（virtual appliance），由风机设备的处理器运行，也可以是风机设备本身。
如图9所示，本申请实施例提供的风机控制装置100包括：
第一获取单元101，用于获取风机的实际转速、实际功率以及目标风量；
功率计算单元102，用于根据实际转速和目标风量，获取与目标风量对应的目标功率；
第二获取单元103，用于当实际功率与目标功率之间的功率差值不在初始差值范围内时，获取与功率差值对应的控制时长和转速步长；
转速调节单元104，用于在控制时长之后，根据转速步长调节实际转速。
在一个实施例中，风机控制装置，还包括：
返回单元，用于：
当实际功率与目标功率之间的功率差值在初始差值范围内时，返回第一获取单元；
在转速调节单元之后返回第一获取单元，直到实际转速保持恒定不变且持续第二预设时间时为止。
在一个实施例中，风机控制装置，还包括：
第三获取单元，用于在预设风量下，分别获取风机在n个预设转速下的功率；其中，每个预设转速对应一个静压，n为大于或等于3的整数；
曲线拟合单元，用于对预设风量、n个预设转速以及风机在n个预设转速下的功率进行曲线拟合，求解与功率、转速和风量相关的拟合关系式，以确定拟合关系式中与预设风量对应的功率系数。
在一个实施例中，第一获取单元，还用于在预设测试风量和预设测试静压下，获取风机的实际测试转速和实际测试功率；
功率计算单元，还用于根据实际测试转速和预设测试风量，获取与预设测试风量对应的目标测试功率；
第二获取单元，还用于当实际测试功率与目标测试功率之间的功率差值不在初始差值范围内时，获取与功率差值对应的控制时长和转速步长；
转速调节单元，还用于在控制时长之后，根据转速步长调节实际测试转速；
第三获取单元，用于获取风机的实际测试功率和实际测量风量；
风量计算单元，用于根据预设测试风量和实际测试风量获得风量精度，风量精度等于实际测试风量与预设测试风量的差值除以预设测试风量。
在应用中，风机控制装置中的各单元可以为软件程序单元，也可以通过处理器中集成的不同逻辑电路或与处理器连接的独立物理部件实现，还可以通过多个分布式处理器实现。
如图10所示，本申请实施例还提供一种风机设备200，包括：至少一个处理器201（图10中仅示出一个处理器）、存储器202以及存储在存储器202中并可在至少一个处理器201上运行的计算机程序203，还包括风机204处理器201执行计算机程序203时实现上述各个方法实施例中的步骤。
在应用中，风机设备可包括，但不仅限于，风机、存储器、处理器等。本领域技术人员可以理解，图10仅仅是风机设备的举例，并不构成对风机设备的限定，可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件，例如，还可以包括输入输出设备、网络接入设备等。输入输出设备可以包括前述人机交互器件，还可以包括显示屏，用于显示风机设备的工作参数。网络接入设备可以包括通信单元，用于风机设备与前述的用户终端进行通信。
在应用中，处理器可以是中央处理单元（Central Processing Unit，CPU），该处理器还可以是其他通用处理器、数字信号处理器（Digital Signal Processor，DSP）、专用集成电路（Application Specific Integrated Circuit，ASIC）、现场可编程门阵列（Field-Programmable Gate Array，FPGA）或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
在应用中，存储器在一些实施例中可以是风机设备的内部存储单元，例如，风机设备的硬盘或内存。存储器在另一些实施例中也可以风机设备的外部存储设备，例如，风机设备上配备的插接式硬盘，智能存储卡（Smart Media Card，SMC），安全数字（Secure Digital，SD）卡，闪存卡（Flash Card）等。存储器还可以既包括风机设备的内部存储单元也包括外部存储设备。存储器用于存储操作装置、应用程序、引导装载程序（Boot Loader）、数据以及其他程序等，例如计算机程序的程序代码等。存储器还可以用于暂时地存储已经输出或者将要输出的数据。
在应用中，显示器可以为薄膜晶体管液晶显示器（Thin Film Transistor Liquid Crystal Display，TFT-LCD）、液晶显示器（ Liquid Crystal Display，LCD）、有机电激光显示器（Organic Electroluminesence Display，OLED）、量子点发光二极管（Quantum Dot Light Emitting Diodes，QLED）显示器，七段或八段数码管等。
在应用中，通信单元可以根据实际需要设置为任意能够与用户终端直接或间接进行远距离有线或无线通信的器件，例如，通信单元可以提供应用在网络设备上的包括无线局域网（Wireless Localarea Networks，WLAN）（如Wi-Fi网络），蓝牙，Zigbee，移动通信网络，全球导航卫星装置（Global Navigation Satellite System，GNSS)，调频（Frequency Modulation，FM），近距离无线通信技术（Near Field Communication，NFC），红外技术（Infrared，IR）等通信的解决方案。通信单元可以包括天线，天线可以只有一个阵元，也可以是包括多个阵元的天线阵列。通信单元可以通过天线接收电磁波，将电磁波信号调频以及滤波处理，将处理后的信号发送到处理器。通信单元还可以从处理器接收待发送的信号，对其进行调频、放大，经天线转为电磁波辐射出去。
需要说明的是，上述装置/单元之间的信息交互、执行过程等内容，由于与本申请方法实施例基于同一构思，其具体功能及带来的技术效果，具体可参见方法实施例部分，此处不再赘述。
所属领域的技术人员可以清楚地了解到，为了描述的方便和简洁，仅以上述各功能单元的划分进行举例说明，实际应用中，可以根据需要而将上述功能分配由不同的功能单元完成，即将所述装置的内部结构划分成不同的功能单元，以完成以上描述的全部或者部分功能。实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中，上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。另外，各功能单元的具体名称也只是为了便于相互区分，并不用于限制本申请的保护范围。上述装置中单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
本申请实施例还提供了一种计算机可读存储介质，计算机可读存储介质中存储有计算机程序，计算机程序被处理器所执行时可实现上述各个方法实施例中的步骤。
本申请实施例提供了一种计算机程序产品，当计算机程序产品在风机设备上运行时，使得风机设备可实现上述各个方法实施例中的步骤。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请实现上述实施例方法中的全部或部分流程，可以通过计算机程序来指令相关的硬件来完成，计算机程序可存储于一计算机可读存储介质中，该计算机程序在被处理器执行时，可实现上述各个方法实施例的步骤。其中，所述计算机程序包括计算机程序代码，所述计算机程序代码可以为源代码形式、对象代码形式、可执行文件或某些中间形式等。所述计算机可读介质至少可以包括：能够将计算机程序代码携带到风机设备的任何实体或装置、记录介质、计算机存储器、只读存储器（ROM，Read-Only Memory）、随机存取存储器（RAM，Random Access Memory）、电载波信号、电信信号以及软件分发介质。例如U盘、移动硬盘、磁碟或者光盘等。
在上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详述或记载的部分，可以参见其它实施例的相关描述。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
在本申请所提供的实施例中，应该理解到，所揭露的装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个装置，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通讯连接可以是通过一些接口，装置或单元的间接耦合或通讯连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
以上所述实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的精神和范围，均应包含在本申请的保护范围之内。

Claims (10)

  1. 一种风机控制方法，其特征在于，包括：
    获取风机的实际转速、实际功率以及目标风量；
    根据所述实际转速和所述目标风量，获取与所述目标风量对应的目标功率；
    当所述实际功率与所述目标功率之间的功率差值不在初始差值范围内时，获取与所述功率差值对应的控制时长和转速步长；
    在所述控制时长之后，根据所述转速步长调节所述实际转速。
  2. 如权利要求1所述的风机控制方法，其特征在于，所述根据所述实际转速和所述目标风量，获取与所述目标风量对应的目标功率，包括：
    确定所述目标风量所处的目标风量区间；
    根据所述实际转速、所述目标风量区间的最大风量以及与所述最大风量对应的功率系数，获取与所述最大风量对应的第一功率；
    根据所述实际转速、所述目标风量区间的最小风量以及与所述所述最小风量对应的功率系数，获取与所述最小风量对应的第二功率；
    根据所述目标风量、所述最大风量、所述最小风量、所述第一功率以及所述第二功率，获取与所述目标风量对应的目标功率。
  3. 如权利要求2所述的风机控制方法，其特征在于，所述根据所述目标风量、所述最大风量、所述最小风量、所述第一功率以及所述第二功率，获取与所述目标风量对应的目标功率，包括：
    通过等比例插值法根据所述目标风量、所述最大风量、所述最小风量、所述第一功率以及所述第二功率，获取与所述目标风量对应的目标功率。
  4. 如权利要求3所述的风机控制方法，其特征在于，所述目标功率的计算公式为：
    P_ref = P2+(P1-P2)*(Q_ref-Q2)/(Q1-Q2)
    其中，P_ref为与所述目标风量对应的目标功率，Q_ref为所述目标风量，Q1为所述最大风量，Q2为所述最小风量，P1为所述第一功率，P2为所述第二功率。
  5. 如权利要求2至4任一项所述的风机控制方法，其特征在于，所述获取风机的实际转速、实际功率以及目标风量之前，包括：
    在预设风量下，分别获取风机在n个预设转速下的功率；其中，每个预设转速对应一个静压，n为大于或等于3的整数；
    对所述预设风量、所述n个预设转速以及所述风机在n个预设转速下的功率进行曲线拟合，求解与功率、转速和风量相关的拟合关系式，以确定所述拟合关系式中与所述预设风量对应的功率系数。
  6. 如权利要求5所述的风机控制方法，其特征在于，所述在预设风量下，分别获取风机在n个预设转速下的功率，包括：
    在预设风量下，分别获取风机在n个预设转速下的d轴电压、q轴电压、d轴电流、q轴电流、相电流和相电阻；
    分别根据所述风机在每个预设转速下的d轴电压、q轴电压、d轴电流、q轴电流、相电流和相电阻，获取所述风机在每个预设转速下的功率。
  7. 如权利要求6所述的风机控制方法，其特征在于，所述风机在每个预设转速下的功率的计算公式为：
    P=1.5(Ud*Id+Uq*Iq)-3*Rs*Is^2
    其中，P为所述风机在预设转速下的功率，Ud为所述风机在预设转速下的d轴电压，Uq为所述风机在预设转速下的q轴电压，Id为所述风机在预设转速下的d轴电流，Iq为所述风机在预设转速下的q轴电流，Is为所述风机在预设转速下的相电流，Rs为所述风机在预设转速下的相电阻。
  8. 如权利要求5所述的风机控制方法，其特征在于，所述拟合关系式为：
    P= k1*Q*V+k2*Q^2+k3*V^3
    其中，P为所述风机在预设转速V下的功率，Q为所述预设风量，k1、k2以及k3为与所述预设风量Q对应的功率系数。
  9. 一种风机控制装置，其特征在于，包括：
    第一获取单元，用于获取风机的实际转速、实际功率以及目标风量；
    功率计算单元，用于根据所述实际转速和所述目标风量，获取与所述目标风量对应的目标功率；
    第二获取单元，用于当所述实际功率与所述目标功率之间的功率差值不在初始差值范围内时，获取与所述功率差值对应的控制时长和转速步长；
    转速调节单元，用于在所述控制时长之后，根据所述转速步长调节所述实际转速。
  10. 一种风机设备，其特征在于，包括风机、存储器、处理器以及存储在所述存储器中并可在所述处理器上运行的计算机程序，所述处理器执行所述计算机程序时实现如权利要求1至8任一项所述风机控制方法的步骤。
PCT/CN2022/070147 2021-03-16 2022-01-04 一种风机控制方法、装置及风机设备 Ceased WO2022193799A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP22770161.2A EP4290080A4 (en) 2021-03-16 2022-01-04 FAN CONTROL METHOD AND APPARATUS, AND FAN DEVICE
US18/550,462 US12410807B2 (en) 2021-03-16 2022-01-04 Method for controlling draught fan, and draught fan device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202110280245.4 2021-03-16
CN202110280245.4A CN112901547B (zh) 2021-03-16 2021-03-16 一种风机控制方法、装置及风机设备

Publications (1)

Publication Number Publication Date
WO2022193799A1 true WO2022193799A1 (zh) 2022-09-22

Family

ID=76105178

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/070147 Ceased WO2022193799A1 (zh) 2021-03-16 2022-01-04 一种风机控制方法、装置及风机设备

Country Status (4)

Country Link
US (1) US12410807B2 (zh)
EP (1) EP4290080A4 (zh)
CN (1) CN112901547B (zh)
WO (1) WO2022193799A1 (zh)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112901547B (zh) 2021-03-16 2023-01-20 合肥美的暖通设备有限公司 一种风机控制方法、装置及风机设备
CN115539421A (zh) * 2021-06-30 2022-12-30 青岛海尔电冰箱有限公司 一种用于冰箱制冷的四线风机控制方法及冰箱
CN113586414B (zh) * 2021-08-10 2023-09-19 三一石油智能装备有限公司 一种压裂泵排量控制方法、装置和存储介质
CN113834176B (zh) * 2021-08-18 2023-03-21 杭州洲钜电子科技有限公司 恒风量曲线的标定方法、设备的控制终端和可读存储介质
CN114484821A (zh) * 2021-12-27 2022-05-13 江阴凹帆电子科技有限公司 一种风量补偿控制方法
CN114992152B (zh) * 2022-06-15 2024-12-06 势加透博（北京）科技有限公司 微型涡轮风机的测试方法
CN115042950B (zh) * 2022-06-30 2023-08-22 广船国际有限公司 一种集装箱船用通风控制方法及集装箱船用通风系统
CN117515817A (zh) * 2022-07-30 2024-02-06 广东美的暖通设备有限公司 风管式空调器及其恒风量控制方法、装置、存储介质
CN117515815A (zh) * 2022-07-30 2024-02-06 广东美的暖通设备有限公司 风管式空调器及其恒风量控制方法、装置、存储介质
CN116255712B (zh) * 2023-03-31 2025-07-08 广东开利暖通空调股份有限公司 空调内机的风量修正控制方法、装置及多联机空调机组
CN119103670A (zh) * 2024-08-28 2024-12-10 中山大洋电机股份有限公司 风量控制方法、装置、目标电机、存储介质及程序产品

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013189953A (ja) * 2012-03-15 2013-09-26 Panasonic Corp 天井扇風機
CN104180858A (zh) * 2014-07-23 2014-12-03 中山大洋电机股份有限公司 一种风机电机测量风量的方法
WO2016011618A1 (zh) * 2014-07-23 2016-01-28 中山大洋电机股份有限公司 一种风机电机测量风量的方法
CN107388502A (zh) * 2017-07-31 2017-11-24 海信（山东）空调有限公司 一种风管式室内机的风量控制方法、装置及室内机
CN109442693A (zh) * 2018-11-05 2019-03-08 广东美的暖通设备有限公司 一种风机控制的方法、装置及空调
CN112901547A (zh) * 2021-03-16 2021-06-04 合肥美的暖通设备有限公司 一种风机控制方法、装置及风机设备

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102315809B (zh) * 2010-07-08 2016-11-16 德昌电机(深圳)有限公司 风扇电机装置、空气流动性调节设备及风量控制方法
US10690138B2 (en) * 2012-08-09 2020-06-23 Panasonic intellectual property Management co., Ltd Motor control device, motor control method, and blower apparatus
CN103809437B (zh) * 2012-11-13 2016-06-29 中山大洋电机股份有限公司 一种电机的恒风量控制方法
CN104764160B (zh) * 2015-03-30 2017-06-16 广东美的制冷设备有限公司 空调器室内机的恒风量控制方法、装置及空调器室内机
CN106152392B (zh) * 2015-04-27 2019-04-19 广东美的制冷设备有限公司 空调器室内机的恒风量控制方法、装置及空调器室内机
DE102015012462B3 (de) * 2015-09-29 2017-03-16 LUNOS Lüftungstechnik GmbH für Raumluftsysteme Verfahren und eine Vorrichtung zum sensorlosen Regeln eines mit einem EC-Motor betriebenen Ventilators eines Lüftungsgeräts
DE102017126138A1 (de) 2017-11-08 2019-05-09 Ebm-Papst Landshut Gmbh Verfahren zur Regelung eines brenngasbetriebenen Heizgerätes
CN109357382A (zh) * 2018-09-27 2019-02-19 四川长虹空调有限公司 空调恒风量控制方法
CN111059736A (zh) * 2019-12-04 2020-04-24 珠海格力电器股份有限公司 空调系统恒风量控制方法
CN111207098B (zh) * 2020-01-22 2025-07-25 中山大洋电机股份有限公司 一种恒风量引风机

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013189953A (ja) * 2012-03-15 2013-09-26 Panasonic Corp 天井扇風機
CN104180858A (zh) * 2014-07-23 2014-12-03 中山大洋电机股份有限公司 一种风机电机测量风量的方法
WO2016011618A1 (zh) * 2014-07-23 2016-01-28 中山大洋电机股份有限公司 一种风机电机测量风量的方法
CN107388502A (zh) * 2017-07-31 2017-11-24 海信（山东）空调有限公司 一种风管式室内机的风量控制方法、装置及室内机
CN109442693A (zh) * 2018-11-05 2019-03-08 广东美的暖通设备有限公司 一种风机控制的方法、装置及空调
CN112901547A (zh) * 2021-03-16 2021-06-04 合肥美的暖通设备有限公司 一种风机控制方法、装置及风机设备

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4290080A4

Also Published As

Publication number Publication date
US20240159241A1 (en) 2024-05-16
CN112901547A (zh) 2021-06-04
EP4290080A1 (en) 2023-12-13
CN112901547B (zh) 2023-01-20
US12410807B2 (en) 2025-09-09
EP4290080A4 (en) 2024-07-31

Similar Documents

Publication Publication Date Title
CN112901547B (zh) 一种风机控制方法、装置及风机设备
US10480809B2 (en) Customized control method and system for air conditioner operation mode
CN105402863B (zh) 空调器的风量控制方法、风量控制装置和空调器
CN110864401B (zh) 系统调试方法、系统调试装置及存储介质
KR102038427B1 (ko) 온도별 전압 제어 방법 및 이를 지원하는 단말기
CN113515225B (zh) 显示控制方法、装置及存储介质
US10068315B2 (en) Electronic device and method for operating display
US20130033506A1 (en) Multi-context graphics processing
WO2022227688A1 (zh) 一种空调设备分组方法、装置、设备及存储介质
CN108681437B (zh) 显示方法和装置、存储介质、电子设备
CN106648326B (zh) 调整熄屏时间的方法及移动终端
CN106708483B (zh) 物联网设备的控制界面的生成方法及生成装置
CN108762715A (zh) 电子设备声音控制方法、装置及设备
CN110377414A (zh) 电容式触摸屏的调节方法、装置、终端及存储介质
CN112783406B (zh) 操作执行方法、装置和电子设备
US10115300B2 (en) Method and apparatus for remote control
CN107040638B (zh) 一种噪音的处理方法及移动终端
CN108764530A (zh) 油井抽油机的工作参数配置方法及装置
WO2021092806A1 (zh) 一种屏幕参数调整方法、装置及终端设备
US11494050B2 (en) Electronic device and method for controlling the electronic device
CN115540302A (zh) 空调器风机的转速控制方法、装置、空调器及存储介质
CN108490824B (zh) 智能电器控制方法、装置及移动终端
CN115795769A (zh) 车用空调系统优化设计方法、装置、设备及存储介质
CN116026012A (zh) 空调机组的控制方法、装置及空调机组
CN115509137B (zh) 一种电子设备控制方法、装置、设备及存储介质

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22770161

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2022770161

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 18550462

Country of ref document: US

ENP Entry into the national phase

Ref document number: 2022770161

Country of ref document: EP

Effective date: 20230907

NENP Non-entry into the national phase

Ref country code: DE

WWG Wipo information: grant in national office

Ref document number: 18550462

Country of ref document: US