EP3665771A1 - Procédé et dispositif de détection d'une grandeur de rotation - Google Patents

Procédé et dispositif de détection d'une grandeur de rotation

Info

Publication number
EP3665771A1
EP3665771A1 EP18780061.0A EP18780061A EP3665771A1 EP 3665771 A1 EP3665771 A1 EP 3665771A1 EP 18780061 A EP18780061 A EP 18780061A EP 3665771 A1 EP3665771 A1 EP 3665771A1
Authority
EP
European Patent Office
Prior art keywords
signal
motor
electric motor
output signal
input signal
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.)
Withdrawn
Application number
EP18780061.0A
Other languages
German (de)
English (en)
Inventor
Christian Thomann
Detlef Russ
Guido Naumann
Christoph Brand
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.)
Brose Fahrzeugteile SE and Co KG
Original Assignee
Brose Fahrzeugteile SE and Co KG
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
Priority claimed from DE102017217626.1A external-priority patent/DE102017217626A1/de
Application filed by Brose Fahrzeugteile SE and Co KG filed Critical Brose Fahrzeugteile SE and Co KG
Publication of EP3665771A1 publication Critical patent/EP3665771A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
    • H02P7/0094—Arrangements for regulating or controlling the speed or torque of electric DC motors wherein the position is detected using the ripple of the current caused by the commutator
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
    • H02P6/007—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor wherein the position is detected using the ripple of the current caused by the commutation
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P2203/00—Indexing scheme relating to controlling arrangements characterised by the means for detecting the position of the rotor
    • H02P2203/03—Determination of the rotor position, e.g. initial rotor position, during standstill or low speed operation
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P2203/00—Indexing scheme relating to controlling arrangements characterised by the means for detecting the position of the rotor
    • H02P2203/11—Determination or estimation of the rotor position or other motor parameters based on the analysis of high-frequency signals

Definitions

  • the invention relates to a method for detecting a rotational variable of a rotatably mounted rotor of a mechanically commutated electric motor.
  • the invention further relates to a device for carrying out such a method.
  • electromotive Versteilantriebe are typically installed, which adjustment parts such as side windows and / or a sunroof can open and close. Furthermore, motor vehicles often have seats with electromotive seat adjustment.
  • the respective adjusting part is in this case moved by means of a gear driven by an electric motor.
  • the gearbox is often designed in the form, in particular, of a worm gear with a (drive-side) worm on a motor shaft and with a worm gear on the output side.
  • the electric motor used is usually a brushed or mechanically commutated electric motor.
  • Such electric motors have a commutator with (commutator) fins and at least two brush elements, by means of which a commutation and consequently an electrical reversal of coil windings of a rotor of the electric motor takes place.
  • the brush elements which are usually made of pressed coal dust, are arranged around the central commutator and are located in corresponding pockets.
  • the brushes are in this case spring-loaded pressed against the commutator, so that an electrical sliding or sliding contact between the brush and the commutator blades thus coated during operation of the engine is guaranteed.
  • the disadvantage here is the detection of the rotational variable (rotor position, rotor speed) depends on the load or motor current. In other words, a detection in the non-energized state of the electric motor is not possible. This makes it necessary, for example, for operating situations with low load current and / or correspondingly low engine speeds for sensorless position and / or speed determination to deposit a motor model in a controller, and to operate the electric motor based on this motor model.
  • the invention has for its object to provide a particularly suitable method for detecting a rotational variable of a rotatably mounted rotor of a mechanically commutated electric motor.
  • a structurally simple design should be specified, by means of which a reliable detection of the rotation size is possible even at low load or motor current.
  • the invention is further based on the object of specifying a device suitable for such a method.
  • the method according to the invention is suitable and configured for detecting a rotational variable of a rotatably mounted rotor of a mechanically commutated, ie brushed, electric motor.
  • the electric motor is, for example, an adjustment drive of a motor vehicle, by means of which an adjustment part is moved along an adjustment path.
  • the electric motor in this case has a commutator and brush elements, which strike at a motor operation via commutator of the commutator.
  • the electric motor is a brushed commutator motor.
  • the brushes or brush elements are part of a brush system of a stator, and the commutator is part of a rotor of the electric motor.
  • the rotor is in particular mounted rotatably relative to the stator.
  • the rotor is provided with an electromagnet structure with a number of coil windings forming the electromagnets (armature winding, rotor winding).
  • armature winding, rotor winding armature winding, rotor winding.
  • a first and second coil end of each coil winding is guided on two commutator of the commutator.
  • a motor current path is thus formed, which is guided over the commutator blades contacted by the brush elements and with the coil windings of the rotor electrically connected thereto.
  • the invention is based on the recognition that the impedance or the inductance of the coil windings is changed by the commutation.
  • an oscillating input signal is fed into the parallel circuit of the motor current path and the radio interference suppression path.
  • the input signal is in this case for example fed as an armature current signal in the motor current path.
  • the input signal here is in particular an additional current signal, which is fed into the motor current path with or as an alternative to the DC-type motor or load current.
  • the impedance or inductance of the motor current path is determined.
  • a special suitable method for detecting a rotation variable is realized.
  • the method is particularly applicable to a standstill or non-energized state of the electric motor. Due to the two different impedance or inductance values, it is possible to detect the commutation states, and thus the rotation quantity, as a variation of the signal amplitude (current ripple, ripple) of the output signal.
  • the resulting current of the output signal is in this case detected, for example, via a resistor, the two commutation states being distinguished on the basis of a different voltage drop.
  • the rotational variable ie the rotor position and / or rotor speed, can then be determined.
  • the current ripple of the output signal is hereinafter also referred to as high-frequency current ripple (HF current ripple, RF ripple).
  • the evaluation of the output signal is preferably carried out by means of a relative detection, ie an amplitude measurement between the two possible commutation states.
  • a relative detection ie an amplitude measurement between the two possible commutation states.
  • Such relative detection suppresses effects and influences of component tolerances. This means that the method is essentially insensitive to component tolerances of the electric motor or the drive. Furthermore, a particularly simple software-technical evaluation of the output signal is thus possible, for example.
  • the motor or load current may be embodied as an alternating current, but the alternating current here has a low alternating current frequency compared to the input signal.
  • the motor or load current is generated by means of a pulse width modulation, and has a frequency of, for example, 20 kHz, wherein the input signal has a significantly greater compared to this measurement frequency in the range of about 500 kHz. It is essential that the motor or load current and the input signal or the output signal from each other have different frequencies, so that they are easily distinguishable from each other in the course of the evaluation.
  • a radio interference suppression path with a capacity for reducing interference is connected in parallel to the motor current pf ad.
  • This embodiment is based on the recognition that the motor current path and the radio interference path of the electric motor form an electrical parallel resonant circuit.
  • the input signal of this parallel resonant circuit is excited, with different resonance frequencies are present depending on the Kommut réellesschreibs. Due to the two different resonance frequencies, it is possible to detect the Kommut réelleszuinstrument, and thus the rotation size, as a variation of the signal amplitude (current ripple, ripple) of the output signal particularly reliable and reliable.
  • the oscillating input signal is generated at a measurement frequency at which the amplitude of the current ripple of the output signal is greatest.
  • a phase-modulated test signal is fed as an input signal into the parallel resonant circuit. Based on the phase shifts of the input and / or output signal, it is possible to set the optimal operating points.
  • a number of different test signals with different phase shifts are successively fed successively, the operating point being determined on the basis of a maximum amplitude difference of the output signal for the different commutation states.
  • the measuring frequency of the or each test signal or of the input signal is hereby selectable in a wide frequency range.
  • the measuring frequency expediently has a frequency value which is greater than the rotational frequencies of the electric motor occurring during operation.
  • the measuring frequency has a frequency value which is greater by one, in particular two orders of magnitude, than the motor frequency.
  • the electric motor has a rotational frequency or motor frequency of about 1 kHz.
  • the measuring frequency is suitably determinable in a wide frequency range, for example between 350 kHz and 800 kHz.
  • the measurement frequency is set to approximately 550 kHz.
  • the RF current ripple of the output signal is reliably distinguishable from the load or motor current.
  • the measuring frequency during operation of an electric motor is alternately switched between a plurality of frequency values.
  • the measurement frequency can be selected over a wide frequency range, in which the amplitude of the current ripple of the output signal, ie the amplitude difference between the two commutation states, approximately is constant.
  • the input signal is generated as a sequence of measurement pulses.
  • the input signal is embodied, for example, as a bit sequence of individual pulse-width-modulated measurement pulses.
  • An additional or further aspect of the invention provides that the output signal for determining the rotational variable is fed via a high-pass filter to a digital pin of an evaluation unit.
  • the evaluation has an additional analog-to-digital converter (analog digital converter, ADC).
  • ADC analog digital converter
  • a "digital pin” here is to be understood in particular as meaning a digital input pin, that is to say an input contact or contact pin of the evaluation unit designed, for example, as a microcontroller, which is suitable and arranged for the reception of digital signals.
  • Output signal can be converted by means of the digital pins directly into digital switching edges for further processing and determination of the rotation size.
  • an interruptible digital pin is used here, ie a pin which initiates a special (interrupt) routine as soon as its status changes, thereby improving the performance of the evaluation unit.
  • the evaluation unit is activated to convert the output signal.
  • ADC channel is also shared by multiple instances of evaluation or control units according to the current needs of each unit, which reduces the need for the most present in small numbers ADC channels.
  • the device according to the invention is suitable and arranged for detecting the rotational size of the rotatably mounted rotor of the mechanically commutated electric motor.
  • the device has a measuring circuit which has a signal generator capacitively coupled to one of the brush elements for generating the input signal and an evaluation unit capacitively coupled to the other brush element for evaluating the output signal.
  • the measuring circuit furthermore has a controller, that is to say a control unit, which is suitable and arranged for carrying out the method described above.
  • the controller is here in general program and / or circuit technology for carrying out the method according to the invention described above. directed.
  • the controller is thus concretely configured to generate an oscillating input signal with a measuring frequency by means of the signal generator, and to determine the rotational variable by means of the evaluation unit on the basis of the HF current ripple of the output signal.
  • the controller is formed at least in the core by a microcontroller with a processor and a data memory in which the functionality for implementing the method according to the invention in the form of operating software (firmware) is implemented by programming, so that the process - optionally in interaction with a Motor vehicle user - is performed automatically when running the operating software in the microcontroller.
  • the controller may be provided by a non-programmable electronic component, e.g. an application-specific circuit (ASIC), in which the functionality for carrying out the method according to the invention is implemented by means of circuitry.
  • ASIC application-specific circuit
  • the controller is part of an engine electronics that controls and / or regulates the electric motor.
  • the capacitive coupling of the signal generator and the evaluation unit to the motor current paths ensures that the AC of the madesspp. Output signal is reliably decoupled from the load or motor current.
  • the capacitive coupling is in this case preferably designed such that the comparatively high-frequency alternating currents of the input and output signals can pass substantially unhindered, and the direct current of the load or motor current is reliably and reliably blocked. This ensures that only the output signal is detected by the evaluation unit. This improves the determination of the rotation quantity.
  • a Funkentstörpfad with a capacity for reducing noise parallel to the motor current pf ad connected.
  • the measuring circuit is connected in the region of the parallel resonant circuit thus formed.
  • the measuring circuit is decoupled by means of a DC decoupling from a guided to the brush elements DC circuit of the electric motor signal technically.
  • the Gleichstromentkopplung prevents the AC of the possiblessl. Output signal is coupled into the DC circuit of the electric motor.
  • the electrical alternating current of the input and output signal to the measuring circuit and thus the motor current pf ad and the Funkentstörpfad circuitically limited.
  • the DC decoupling is designed as a longitudinal throttle, which has a blocking effect in the range of the measuring frequency of the input signal.
  • a frequency filter is formed by the longitudinal throttle, which can pass through the DC motor or load current substantially unattenuated and which reliably attenuates high-frequency current components, in particular in the range of the measurement frequency of the input and output signal.
  • the output signal is fed via a high-pass filter to a digital pin of the evaluation unit. This allows a particularly high-quality and circuit-reduced evaluation of the output signal.
  • Fig. 2 shows a detail of the electric motor with a rotor and with a
  • FIG. 3 shows a device for detecting a rotational size of the rotor
  • Fig. 4 is a frequency-amplitude diagram of the device.
  • FIG. 1 shows a schematic and simplified representation of an electric window lifter 2 with a movable window pane as an adjustment part 4.
  • the window regulator 2 is suitably integrated in a vehicle door 6 of a motor vehicle.
  • the adjusting part 4 is adjusted by means of an electromotive adjusting drive 8 along an adjustment path 10.
  • the Versteilantrieb 8 has an electric motor 12, which on the shaft side with a worm gear 14 cooperates on. By the worm gear 14, a rotational movement of the electric motor 12 is converted into a translational movement of the adjusting part 4.
  • the electric motor 12 is supplied with electrical energy by an engine electronics 16 as soon as a user of the motor vehicle starts an adjustment movement of the adjustment part 4 along the adjustment path 10 by means of an actuation of a button 18.
  • the electric motor 12 is shown in fragmentary form, which is designed in this embodiment as an inner rotor.
  • the electric motor 12 has a stator 20 with a number of permanent magnets 22, of which two are shown by way of example in FIG. 2.
  • the permanent magnets 22 of the stator 20 are in this case held in position by means of a stator (not shown) laminated core.
  • an armature 24 is arranged with a rotor 26 and with a rotor shaft 28 to which a not shown worm wheel of the worm gear 14 is attached.
  • the rotor 26 is provided with an electromagnet structure 30 with a number of coil windings forming the respective electromagnets (rotor windings, kerwicklept) 32 provided.
  • Each of the coil windings 32 is wound as a coil around a (rotor) laminated core 34 fixed on the rotor shaft 28 and electrically contacted with two commutator laminations 36 of a commutator 38.
  • the commutator 38 is fixed against rotation on the rotor shaft 28.
  • the commutator blades 36 differ in this case only due to their arrangement with respect to the rotor shaft 28, the commutator blades 36 are each offset by a constant angle to the commutator 38 are arranged.
  • the commutator 38 is electrically contacted with two (carbon) brushes or brush elements 40.
  • the brush elements 40 brush over the commutator blades 36 by means of an electrically conductive sliding or sliding contact.
  • the brush elements 40 are in this case electrically contacted by means of a respective line 42 with the engine electronics 16.
  • the engine electronics 16 includes a device 44 having a controller 46 for detecting a rotational amount of the rotor 26.
  • the engine electronics 16 of the mechanically kom mutated electric motor 12 has a DC circuit 48, which is guided by means of the lines 42 to the brush elements 40.
  • the DC circuit has a DC-DC converter, not shown, by means of which an electrical supply voltage of a motor vehicle electrical system is converted into an operating voltage or in an operating current.
  • the DC circuit 48 has two half-bridges 50, which are connected to the device 44.
  • a motor current path 52 is formed between the two brush elements 40 of the electric motor 12.
  • the motor current path 52 is in this case guided over the brush elements 40 contacted commutator bars 36 and with these electrically conductive coil windings 32.
  • the motor current path 52 has a respective motor choke 54 on the brush side.
  • the two brush elements 40 are each electrically contacted with two of the commutator blades 36, so that two of the coils or coil windings 32 of the electromagnet structure 30 are energized thereby.
  • the coil windings 32 are in this case connected in parallel to each other.
  • a coil winding 32 is thereby electrically short-circuited by means of a brush element 40. This causes a current increase above the normal current value of the load or motor current of the DC circuit 48.
  • a second commutator state occurs, which is characterized by a lower current value.
  • the motor current path 52 essentially has a variable ohmic armature resistance 56 as well as a changing inductance due to the different number of contacted coil windings 32.
  • the motor current path 52 is connected in parallel with a radio interference path 58 having a resistor 60 and with a capacitor 62.
  • the Funkststörscrien thus realized is used to suppress interference signals that may occur due to the engine operation.
  • an electrical parallel resonant circuit 64 is formed by the parallel connection of the motor current path 52 and the radio interference suppression path 58.
  • the parallel resonant circuit 64 has substantially two resonant frequencies 66 and 68, which correspond to the two commutator states of the electric motor 12.
  • the device 44 has a measuring circuit 70 which is connected to one of the half bridges 50 by means of two direct current decoupling (DC decoupling) 72.
  • the DC torque coupling 72 is in this case designed in particular as a respective one longitudinal throttle.
  • the device 44 further has a signal generator 74, which is connected by means of a capacitor 76 to one of the lines 42 between the DC decoupling 72 and the parallel resonant circuit 64.
  • an evaluation unit 78 is connected by means of a capacitor 80 between the parallel circuit 64 and the Gleichstromentkopplung 72.
  • the signal generator 74 and the evaluation unit 78 are part of the controller 46, or at least controlled by this.
  • the signal generator 74 In operation, the signal generator 74 generates an oscillating input signal 82 during operation.
  • the input signal 82 is in particular a substantially sinusoidal alternating current signal having a measuring frequency 84.
  • the input signal 82 is fed via the capacitor 76 into the line 42. This means that the input signal 82 is fed as an armature current signal into the parallel resonant circuit 64.
  • the signal generator 74 is thus an additional or alternative power source adjacent to the DC circuit 48.
  • a DC load or motor current for driving the armature 24 and the rotor 26 is fed during operation of the electric motor 12.
  • This load or motor current is added to the input signal 82 and fed to the parallel resonant circuit 64.
  • the load or motor current is impressed in this case, in particular due to the changing during the rotation of the rotor 26 armature resistor 56 current ripple.
  • This current ripple of the load or motor current has a so-called ripple frequency, which essentially corresponds to the rotational frequency or motor frequency of the rotating armature 24.
  • the output signal 86 is fed via the capacitor 80 connected as a coupling capacitor and via a high-pass filter 87 to a digital pin 78a of the evaluation unit 78.
  • the digital pin 78a thus converts the signal edges of the output signal 86 caused by the current ripple into a digital signal for determining the rotational quantity.
  • the additional high-pass filter 87 ensures constant signal levels for the high (HIGH) and low (LOW) signal states of the output signal 86, so that a reliable digitization by means of the pins 78a is ensured.
  • FIG. 4 shows a frequency-amplitude diagram.
  • a signal frequency f is plotted.
  • a corresponding signal amplitude A of the output signal 86 is plotted.
  • two signal curves are shown, which represent the two commutation states, and are also referred to below on the basis of the respective resonance frequency 66 and 68, respectively.
  • the waveforms 66 and 68 have substantially similar waveforms.
  • the respective output signal 86 of the waveforms 66 and 68 has a low signal amplitude A, since the capacitive coupling of the signal generator 74 by means of the capacitor 76 and the evaluation unit 78 by means of the capacitor 80 complicate an effective signal transmission.
  • the signal profiles 66 and 68 reach a first signal maximum 88, which substantially corresponds to a high-pass effect of the capacitors 76 and 80.
  • the signal amplitude A of the output signal 86 is reduced until a signal minimum 90 is reached.
  • the signal minimum 90 occurs here at the respective resonance frequency 66.68 of the parallel resonant circuit 64 of the motor current path 52 and the radio interference suppression 58.
  • the signal amplitudes A of the output signals 86 increase continuously until a second signal maximum 92 is reached.
  • the maximum signal 92 corresponds to a resonance case of the device 44, ie the combined system of motor current pf ad 52 and the Funkentstörpfads 58 and the longitudinal inductors of the Gleichstromentkopplung 72nd
  • the signal profiles 66 and 68 have a substantially constant signal distance d in the frequency range between the signal minimum 90 and the signal maximum 92.
  • This signal spacing d substantially corresponds to the amplitude difference of the output signals 86 when the first and second commutator states are excited.
  • the signal distance d is monitored by the evaluation unit 78.
  • the evaluation unit 78 detects a relative amplitude change of the output signal 86.
  • the armature 24 and the rotor 26 rotates in motor operation with a rotational frequency of about 1 kHz.
  • the coupling capacitors 76 and 80 are in this case dimensioned such that the first signal maximum 88 occurs approximately between 150 kHz and 200 kHz.
  • the signal minimum occurs suitably approximately at 350 kHz, the maximum signal 92 occurs at about 650 kHz.
  • the measurement frequency 84 for generating the input signal 82 is suitably selected from the frequency range between the signal minimum 90 and the maximum signal 92.
  • a signal frequency f is selected in which the signal distance d has a maximum value. This means that the input signal 82 or the output signal 86 have a measurement frequency 84 which differs substantially from the frequency of the current ripple generated by the commutation.
  • the input signal 82 is not generated as a continuous sinusoidal signal having the measurement frequency 84, but instead a bit sequence of pulse-width-modulated measurement pulses, each measurement pulse having a sine oscillation with the measurement frequency 84.
  • the measurement frequency 84 it is also conceivable, for example, for the measurement frequency 84 to be switched between a plurality of frequency values. In this case, it is possible, for example, for the input signal to be switched periodically between a plurality of measurement frequencies 84, for example between four different measurement frequency values. As a result, a particularly suitable engine operation with respect to EMC requirements is realized.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Direct Current Motors (AREA)

Abstract

L'invention concerne un procédé de détection d'une grandeur de rotation d'un rotor (26) monté rotatif d'un moteur électrique (12) à commutation mécanique, comprenant un trajet de courant de moteur (52), formé entre deux éléments de brossage (40) du moteur électrique (12), qui est conduit au moyen de lamelles commutateurs (36) en contact avec les éléments de brossage (40) et d'enroulements de bobine (32) du rotor (26) raccordés électriquement de manière conductrice avec lesdites lamelles commutateurs, un signal d'entrée (82) oscillant étant introduit dans le trajet de courant de moteur (52) et, en fonction d'une ondulation de courant, provoquée par la commutation mécanique du trajets de moteur (52), d'un signal de sortie (86) résultant, la grandeur de rotation étant déterminée.
EP18780061.0A 2017-10-04 2018-09-25 Procédé et dispositif de détection d'une grandeur de rotation Withdrawn EP3665771A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102017217626.1A DE102017217626A1 (de) 2017-10-04 2017-10-04 Verfahren und Vorrichtung zur Erfassung einer Rotationsgröße
DE102018204531 2018-03-23
PCT/EP2018/075956 WO2019068517A1 (fr) 2017-10-04 2018-09-25 Procédé et dispositif de détection d'une grandeur de rotation

Publications (1)

Publication Number Publication Date
EP3665771A1 true EP3665771A1 (fr) 2020-06-17

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP18780061.0A Withdrawn EP3665771A1 (fr) 2017-10-04 2018-09-25 Procédé et dispositif de détection d'une grandeur de rotation

Country Status (7)

Country Link
US (1) US11290035B2 (fr)
EP (1) EP3665771A1 (fr)
JP (1) JP2020536483A (fr)
KR (1) KR20200062286A (fr)
CN (1) CN111183580B (fr)
MA (1) MA49850A (fr)
WO (1) WO2019068517A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2019723B1 (en) * 2017-10-13 2019-04-23 Mci Mirror Controls Int Netherlands B V Method and device for providing information on an annular displacement of a DC electromotor
EP3838639A1 (fr) * 2019-12-17 2021-06-23 Inalfa Roof Systems Group B.V. Ensemble toit ouvrant destiné à être utilisé dans un véhicule et son procédé de fonctionnement

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007013711A1 (de) 2007-03-22 2008-09-25 Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Hallstadt Verfahren und Vorrichtung zur Dreherfassung eines bürstenbetriebenen Gleichstrommotors
DE102008000618A1 (de) * 2008-03-12 2009-09-17 Robert Bosch Gmbh Auswerteeinheit, Motorsystem und Verfahren zur Bestimmung einer Drehzahl eines Elektromotors
JP5385019B2 (ja) 2008-08-06 2014-01-08 株式会社日本自動車部品総合研究所 回転検出装置
DE102009002654A1 (de) * 2009-04-27 2010-10-28 Robert Bosch Gmbh Verfahren und Vorrichtung zum Bestimmen einer absoluten Winkellage eines Rotors eines kommutierten Elektromotors
DE102009026448A1 (de) * 2009-05-25 2010-12-09 Robert Bosch Gmbh Bestimmung von Motoreigenschaften mittels einer Messkomponente
DE102009026520A1 (de) 2009-05-28 2010-12-02 Robert Bosch Gmbh Entstörfilter für einen Gleichstrommotor
US8247944B2 (en) * 2009-08-28 2012-08-21 Steering Solutions Ip Holding Corporation Method for reducing current and torque ripple in a brushed electric motor and motor employing the same
JP5519324B2 (ja) * 2010-02-24 2014-06-11 株式会社日本自動車部品総合研究所 回転検出装置
EP3070837A4 (fr) 2013-11-13 2017-11-22 Mitsubishi Electric Corporation Dispositif de commande pour machine rotative, et appareil de pilotage de puissance électrique
DE102014008462A1 (de) 2014-06-06 2015-12-17 Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Hallstadt Verfahren zum Betrieb eines bürstenbehafteten Kommutatormotors eines Verstellantriebs und Verstellantrieb

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Publication number Publication date
US20200295678A1 (en) 2020-09-17
KR20200062286A (ko) 2020-06-03
CN111183580A (zh) 2020-05-19
US11290035B2 (en) 2022-03-29
WO2019068517A1 (fr) 2019-04-11
JP2020536483A (ja) 2020-12-10
CN111183580B (zh) 2024-04-16
MA49850A (fr) 2020-06-17

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