WO2024256099A1 - Procédé de correction de décalages dans une unité de commande d'un véhicule à moteur et unité de commande correspondante - Google Patents

Procédé de correction de décalages dans une unité de commande d'un véhicule à moteur et unité de commande correspondante Download PDF

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Publication number
WO2024256099A1
WO2024256099A1 PCT/EP2024/063107 EP2024063107W WO2024256099A1 WO 2024256099 A1 WO2024256099 A1 WO 2024256099A1 EP 2024063107 W EP2024063107 W EP 2024063107W WO 2024256099 A1 WO2024256099 A1 WO 2024256099A1
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WO
WIPO (PCT)
Prior art keywords
value
parameter
support point
characteristic curve
offset
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/EP2024/063107
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German (de)
English (en)
Inventor
Richard Kopold
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.)
Vitesco Technologies GmbH
Original Assignee
Vitesco Technologies GmbH
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 Vitesco Technologies GmbH filed Critical Vitesco Technologies GmbH
Priority to EP24727178.6A priority Critical patent/EP4727785A1/fr
Priority to CN202480039244.2A priority patent/CN121358625A/zh
Publication of WO2024256099A1 publication Critical patent/WO2024256099A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/005—Testing of electric installations on transport means
    • G01R31/006—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks
    • G01R31/007—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks using microprocessors or computers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/0038—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to sensors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/12—Recording operating variables ; Monitoring of operating variables
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/32—Compensating for temperature change

Definitions

  • the present disclosure relates to control units of motor vehicles and to methods carried out thereon. Specifically, it relates to a method for offset correction of a parameter determined by means of a control unit of a motor vehicle and to a corresponding control unit.
  • a method for offset correction in a control unit of a motor vehicle comprises a) determining an offset characteristic curve of a measuring channel set up for measuring a parameter, comprising the following steps: reading a first support point value of the parameter that is assigned to a first predetermined temperature from a data set; reading a second support point value of the parameter that is assigned to a second predetermined temperature from the data set, wherein the second predetermined temperature is lower than the first predetermined temperature; reading a third support point value of the parameter that is assigned to a third predetermined temperature from the data set, wherein the third predetermined temperature is higher than the first predetermined temperature; and interpolating between the support point values to obtain the offset characteristic curve.
  • the method further comprises b) adjusting the offset characteristic curve, comprising the following steps: receiving, in particular by the control unit, an adjustment value of the parameter and an associated adjustment temperature; Determining a deviation of the adjustment value from the offset characteristic curve; adjusting at least one of the support point values based on the deviation; and adjusting the offset characteristic curve based on the at least one adjusted support point value.
  • a control device for a motor vehicle is provided, wherein the control device is configured to carry out the method described above.
  • an "offset" can mean a control deviation or an offset when determining a parameter.
  • the offset can refer to a zero point deviation. It can be independent of the determined or measured parameter value, in particular at a constant temperature.
  • the offset can be temperature-dependent.
  • the offset can be influenced by systematic deviations in components and/or lines, for example of the measuring channel.
  • an "offset characteristic curve" can mean a plurality of temperature-dependent offset values that define a temperature-dependent offset or offset error of the parameter.
  • the temperature-dependent offset values can be distributed continuously or discretely over a predetermined temperature range.
  • offset correction requires adding the associated offset value to a determined or measured parameter value or subtracting the associated offset value from it, for example depending on how the offset characteristic curve is defined.
  • a “parameter” can be an operating parameter, i.e. a variable characteristic of the operation of the control unit and/or the motor vehicle.
  • the parameter is, for example, a voltage or a current, in particular a voltage correlating with a battery current of the motor vehicle.
  • a “measuring channel” is characterized by an associated measuring range of the parameter.
  • the measuring range can cover the entire parameter range required for the operation of the control unit or only a part of it.
  • the control unit belongs to a drive system of the motor vehicle. It is in particular a battery management system.
  • a "data set" is stored in a memory of the control unit and/or in a memory outside the control unit, for example a central control device of the motor vehicle.
  • the data set can be stored in a lookup table.
  • the associated predetermined temperatures can also be stored in the data set.
  • a "support point" or a support point designates a temperature-related offset value of the parameter, by which the course of the offset characteristic curve is defined.
  • the support point can, but does not have to, lie on the offset characteristic curve.
  • the support point has a "support point value” and an associated "specified temperature” as coordinates.
  • the support point value is preferably an offset value of the parameter.
  • the specified temperature can be, for example, a temperature of the control unit, the measuring channel, a measuring device and/or an area in which the support point value is measured, in particular after production and before commissioning of the control unit.
  • interpolation means in particular the determination of one or more intermediate offset values between the respective support points. Interpolation can be carried out by a linear connection between the respective support points. The linear connection can be extended beyond the smallest predetermined temperature and/or the largest predetermined temperature. However, interpolation can also be carried out by any other method, in particular by non-linear interpolation, for example an nth degree interpolation polynomial or trigonometric interpolation.
  • the support points can, but do not have to, lie on the interpolated offset characteristic curve.
  • the adjustment of the offset characteristic curve based on the at least one adjusted support point value can be carried out by interpolating between the support point values taking into account the adjusted support point value.
  • an "adaptation point" of the parameter refers in particular to a temperature-related adaptation value of the parameter, which is determined or measured in order to make an adaptation or correction of the offset characteristic curve if necessary.
  • an adaptation point is determined under predetermined operating conditions, for example when the control unit is booted up or started up and/or when the control unit is shut down.
  • the adjustment point has as coordinates an "adjustment value" of the parameter and an associated "adjustment temperature".
  • the associated adjustment temperature is, for example, a temperature of the control unit, the measuring channel, a measuring device and/or an area at which the support point value is measured.
  • the adjustment value and/or the associated adjustment temperature are, for example, sent by a respective measuring device and received by the control unit.
  • the adjustment value can be representative of a measurement signal of the parameter.
  • the adjustment value can be an offset value at the associated adjustment temperature.
  • “determining a deviation of the adjustment value from the offset characteristic curve” includes determining a difference between the adjustment value and the associated value of the offset characteristic curve at the adjustment temperature. Additionally or alternatively, a shortest distance between the adjustment point and the offset characteristic curve can be determined. In a further development, a plurality of deviations from a plurality of adjustment values are determined and the adjustment of the at least one support value is carried out on the basis of the plurality of deviations.
  • the “adjustment of a support point value” is carried out by increasing or decreasing the support point value on the basis of a determined Deviation from the offset characteristic curve is achieved.
  • the adjustment can be carried out in such a way that the offset characteristic curve is corrected in the direction of the adjustment points. Partial, complete or even overcompensation can take place.
  • the associated specified temperature can, but does not have to, remain unchanged. If the associated specified temperature is also adjusted, this can also be written to the data set.
  • such a method and such a control unit make it possible to determine a particularly precise and/or particularly reliable parameter value based on the offset correction.
  • the offset characteristic curve can be defined in a particularly simple and efficient manner. Adapting the support points allows the offset correction to be adapted to changed operating conditions, for example due to component aging or wear.
  • Such a method for offset correction requires little storage space and computing power. Accordingly, the offset correction and the adaptation of the offset characteristic curve can be carried out online and during operation of the control unit and/or the motor vehicle without great effort.
  • the method further comprises writing the at least one adjusted interpolation point value into the data set, in particular into a data field of the data set assigned to the interpolation point value.
  • the method further comprises: c) offset correcting an operating value of the parameter, comprising the following steps: receiving, in particular by the control unit, the operating value and an associated operating temperature; and correcting the operating value based on the offset characteristic curve.
  • an “operating point” may refer to a temperature-related value of the parameter that is determined or measured during operation of the control unit and/or the motor vehicle.
  • the operating point may be defined by the “operating value” of the parameter and the "associated operating temperature".
  • the associated operating temperature is, for example, a temperature of the control unit, the measuring channel, a measuring device and/or an area where the operating value is measured.
  • Such an embodiment may be advantageous in order to enable a more precise determination or measurement of the parameter during operation by means of an offset correction.
  • the offset correction is performed continuously during normal operation of the vehicle.
  • correcting the operating value comprises adding the value of the offset characteristic at the operating temperature to the operating value or subtracting the value of the offset characteristic at the operating temperature from the operating value.
  • Other correction methods based on a comparison of the operating point with the offset characteristic are also possible.
  • the parameter is a voltage or a current.
  • Such an embodiment can be advantageous because currents and voltages are fundamental signals, particularly in electric vehicles and hybrid electric vehicles, to enable reliable and safe operation and to optimize operation.
  • the parameter is a voltage and the method further comprises: d) determining a current intensity, in particular a battery current intensity of a battery of the motor vehicle, from the corrected operating value of the parameter.
  • the voltage can be measured at a resistor, in particular a shunt or current measuring resistor.
  • the current intensity can be determined from a voltage drop across the resistor.
  • the offset can be defined as a voltage that is present at OA current flow.
  • a battery current strength of a high-voltage battery for a plug-in hybrid electric vehicle (PHEV) or a battery electric vehicle (BEV) is determined, in particular a 400V or 800V battery.
  • control unit is a battery management system (BMS) or the battery management system comprises the control unit.
  • BMS battery management system
  • the received adjustment value is representative of a value of the parameter measured when a battery management system of the battery is started up or shut down and/or the received adjustment value is representative of a value of the parameter that is measured when an electrical connection between the measuring channel and the battery is interrupted.
  • the electrical connection is interrupted because an intermediate switch, for example a contactor, is open.
  • Starting up and/or shutting down the battery management system can be associated with closing or opening such a switch. When the switch is open, the current flow through the measuring channel can be zero. This means that a corresponding adjustment value can be directly determined at the adjustment temperature.
  • the adjustment temperature preferably corresponds to a temperature when starting up or shutting down the battery management system.
  • the measured adjustment value is received by the control unit, in particular in order to adjust the offset characteristic curve.
  • Such an embodiment can be advantageous for determining an offset in which various or even all characteristics of the measuring channel are taken into account, for example characteristics of the conductor tracks or the components of the measuring channel. Such comprehensive consideration can be difficult or even impossible as soon as a current flows through the measuring channel that changes the properties of the conductor tracks and/or components.
  • the received adaptation value is representative of a value of the parameter measured when no external influences affect the measuring channel.
  • the system can be without load, so that the noise or error of the channel is measured at the current temperature.
  • the HV contactors can be open and the HV battery not yet connected.
  • At least one further support point value is determined at an associated predetermined temperature and the at least one further support point value is taken into account during interpolation in order to obtain the offset characteristic curve. For example, one, two, three, four, five, more than five or more than ten further support point values are determined and taken into account.
  • Such an embodiment can be advantageous because additional interpolation point values increase the accuracy of the offset correction, in particular if an offset drift of the measuring channel has a non-linear course.
  • the first support point value is not adjusted.
  • the first support point value can be measured more precisely than the other support point values.
  • the first predetermined temperature can expediently be in a preferred temperature range for which the control unit, in particular the measuring channel, is designed or optimized. This preferred temperature range includes, for example, a room temperature, for example 25 °C. In this respect, a possible drift can also be smaller than in other temperature ranges and, as a result, an adjustment of the first support point value can be dispensed with.
  • the first support point value is adjustable.
  • the first support point value is measured and the second and third support point values are set equal to the first support point value or the second and third support point values are set equal to simulated and/or calculated values, wherein in particular the support point values are written into the data set, for example, written into the associated data fields of the data set.
  • Calibration can be used to set the first interpolation point value to zero.
  • the offset of the measuring channel and/or the offset of other measuring channels can be zero or close to zero at the first specified temperature, particularly after production and before commissioning. Production can include commissioning for test purposes.
  • Such an embodiment can be advantageous in order to establish a suitable starting point for adjusting the offset during operation. Due to the expected temperature variation after commissioning, it can be advantageous to only adjust the second, third and possibly further support point values after commissioning. It can also be advantageous that only one measurement, i.e. the measurement of the first support point, e.g. at ambient temperature, is necessary as a starting point.
  • the first predetermined temperature is a room temperature or ambient temperature and/or the second predetermined temperature is determined by a lower operating temperature limit, in particular -40 °C, and/or the third predetermined temperature is determined by an upper operating temperature limit, in particular 120 °C.
  • the operating temperature limits can be determined by the hardware of the control unit and/or by legal requirements. Such an embodiment can be advantageous in order to enable efficient offset correction in the entire range of possible operating temperatures. A measurement at ambient temperature can be particularly accurate.
  • the method further comprises: determining a further offset characteristic of a further measuring channel set up for measuring the parameter; and adjusting the further offset characteristic.
  • the determination of the further offset characteristic of the further measuring channel and the adjustment of the further offset characteristic can be carried out analogously to the methods previously described for the measuring channel.
  • offset characteristics for three, four, five, more than five or more than ten measuring channels are determined and adjusted in this way.
  • an offset correction of different measurement channels can be carried out and coordinated with each other. Independent measurements of a current, for example, can be used for plausibility checks in order to meet safety requirements for the system and/or to achieve greater accuracy.
  • the further measuring channel is a redundant measuring channel and/or the further measuring channel has a smaller or larger measuring range than the measuring channel.
  • a further measuring channel with a smaller measuring range can have a greater accuracy than the measuring channel.
  • a further measuring channel with a larger measuring range can have a lower accuracy than the measuring channel.
  • Measuring channels with different measuring ranges can be advantageous in order to achieve greater accuracy for certain measured values, for example measured values under typical operating conditions.
  • a redundant measuring channel can have the same measuring range as the measuring channel, but can also have a smaller or larger measuring range. Such a redundant measuring channel can be advantageous for a comparison with the measuring channel. For example, in a current measurement, one measuring channel can be designed to measure from -50A to 50A and the other measuring channel can be designed to measure from -500A to +500A.
  • the method further comprises a plausibility check of the measuring channel taking into account the further measuring channel based on the offset characteristic curve and the further offset characteristic curve.
  • a plausibility check of the measuring channel taking into account the further measuring channel based on the offset characteristic curve and the further offset characteristic curve.
  • the term “plausibility” means in particular that further reasons and/or facts are provided in order to ensure the accuracy and/or reliability of a measured parameter value. increase.
  • measurements of the parameter can be compared via different measurement channels.
  • the method further comprises detecting an error in the measuring channel based on the deviation of the adjustment value from the offset characteristic curve, in particular if the at least one support point value has to be adjusted too frequently or too strongly, for example in comparison to a proper measuring channel, and/or if different measuring channels deviate too strongly from one another, for example more strongly than in a proper control unit.
  • the error can, for example, relate to a malfunction in a component and/or an electrical line of the measuring channel.
  • Figure 1 shows a method for offset correction in a current measurement according to an embodiment of the present disclosure
  • Figures 2 to 4 each show offsets of different measuring channels and an offset characteristic curve according to an embodiment of the present disclosure.
  • Figure 1 shows a method for offset correction of a parameter determined by a control unit of a motor vehicle, here a voltage measured at a shunt resistor 141.
  • the battery current is usually determined using such a shunt-based measurement.
  • the current generates a voltage drop at the shunt 141. If the voltage is measured via corresponding amplifiers, here a full-range amplifier 130, a low-range amplifier 132 and a redundant full-range amplifier 134, with one or more analog-digital converters (ADC) 142, this correlates with the current value.
  • ADC analog-digital converters
  • the different amplifiers are assigned to corresponding measuring channels 130, 132, 134.
  • the measurement must meet the vehicle-specific requirements, such as a temperature range of -40°C to 120°C, a current measuring range of -300 to 1000A, etc.
  • vehicle-specific requirements such as a temperature range of -40°C to 120°C, a current measuring range of -300 to 1000A, etc.
  • the integrity of the signal can be ensured by a redundant measurement using a redundant measuring channel 134.
  • the high accuracy requirements are implemented, similar to a multimeter, by different measuring ranges with their own measuring channels 130, 132, 134.
  • Low currents such as -100 to 200A are measured using a measuring channel 132 that is designed for this range.
  • a second measuring channel 130 covers the full range from -300 to 1000A, for example. This ensures that the measurement error in the low range does not become too large.
  • each measuring channel 130, 132, 134 has its own drift over its service life and also temperature response during operation due to the respective hardware circuit, components, position on the board. This affects above all the offset of the current measurement, ie the voltage that is present at OA current flow. This offset error reduces the accuracy of the current measurement and must be corrected. In addition, the offset error can have a negative effect on the plausibility between channels 130, 132, 134.
  • the determination 150 of the current can comprise the following steps: selection of an amplifier range; temperature compensation based on a corresponding offset characteristic, for which a determination 152 of the temperature at the shunt 141 or the respective measuring channel 130, 132, 134 is required; and plausibility check between the main and the redundant current determination.
  • the output 151 of the current can then take place.
  • Figures 2 to 4 show temperature-dependent offset errors 131, 133, 135 of different measuring channels as well as a temperature-dependent offset characteristic curve 100.
  • the offset drift 101 in mV is shown as a function of the temperature 102 in °C.
  • the offset error 131 belongs to a full-range measuring channel
  • the offset error 133 belongs to a low-range measuring channel
  • the offset error 135 belongs to a redundant full-range measuring channel.
  • the offset characteristic curve 100 for the offset error 131 of the full-range measuring channel is determined with the following steps: Reading a first support point value 110 of the parameter 101 at a first specified temperature 111 from a data set; Reading a second support point value 112 of the parameter 101 at a second specified temperature 113 from the data set, wherein the second specified temperature 113 is smaller than the first predetermined temperature 112; and reading out a third interpolation point value 114 of the parameter 101 at a third predetermined temperature 115 from the data set, wherein the third predetermined temperature 115 is greater than the first predetermined temperature 111; and interpolating between the interpolation point values 110, 112, 114 to obtain the offset characteristic curve 100.
  • Figure 2 shows the offset characteristic curve 100 of the full-range measuring channel after production and before commissioning (end of line).
  • the first support point value 110 is measured as an offset in the de-energized state and at a defined first specified temperature 111 (e.g. 25 °C).
  • the first support point value 110 is then stored in the control unit, for example a battery management system.
  • the offset drift is stored in the control unit as a characteristic curve over temperature with at least 3 support points 110, 112, 114, including a second support point 112 at a second specified temperature 113 in the cold range, here at -40 °C, a third support point 114 at a third specified temperature 115 in the warm range, here at 120 °C, and finally an end-of-line adjustment point as a first support point 110 at a first specified temperature 111.
  • a linear interpolation between the support points 110, 112, 114 results in the offset characteristic curve 100, which can be used to determine a temperature-dependent offset.
  • the support points are all set to an identical value, here to 0 mV.
  • only the first support point 110 is set to 0 mV and the other support points 112, 114 are set to a respective calculated or simulated offset value. This allows the accuracy to be improved at the end of line and temperature-dependent offset errors can be at least partially compensated.
  • Figures 3 and 4 show the adjustment of the offset characteristic curve based on different online measurements, in each of which an adjustment value 120 is determined at an associated adjustment temperature 121. "Online measurements" are carried out during operation and/or after commissioning of the control unit. First, it is checked whether a measurement can be directly assigned to a temperature support point 110, 112, 114.
  • a Adjusting the offset characteristic curve 100 by adjusting at least one support point value 110, 112, 114 which comprises the following steps: receiving the adjustment value 120 of the parameter 101 and the associated adjustment temperature 121 by the control unit from a measuring device; determining a deviation of the adjustment value 120 from the offset characteristic curve 100; adjusting the at least one support point value 110, 112, 114 based on the deviation, wherein in the present case only the two outer support points 112, 114 are adjusted and not the end of line (EOL) adjustment point 110; and writing the at least one adjusted support point value 110, 112, 114 into the associated data field of the data set.
  • the current offset value 120 of the offset characteristic curve 100 is adapted to the measured temperature 121 by changing the existing support points 110, 112, 114.
  • the offset correction factor is calculated during operation with linear interpolation via temperature between the stored support points 110, 112, 114.
  • Figures 2, 3 and 4 illustrate a method with which the offset correction for individual measuring channels can be determined and taught during operation, thus achieving a particularly high level of accuracy and low deviation between the measuring channels for current measurement, implemented via a voltage measurement on a resistor.
  • a characteristic curve 100 (correction value vs. temperature) with at least three support points 110, 112, 114 for the offset is stored in the control unit.
  • the temperature at the shunt/measuring channel is determined and the corresponding correction value for the measured current is interpolated from the characteristic curve 100.
  • Essential steps of the procedure for online adaptation of the offset characteristic curve 100 can be measurement of the offset 120 of the respective measuring channel at 0A (start-up or powerdown, contactors open) as well as adaptation of the characteristics 100 in the direction of the respective measured values 120 by adjusting the existing support points 110, 112, 114.

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Abstract

L'invention se rapporte à un procédé de correction de décalages dans une unité de commande d'un véhicule à moteur. Le procédé comprend a) la détermination d'une courbe caractéristique de décalage (100) d'un canal de mesure (130) conçu pour mesurer un paramètre (101), comprenant les étapes suivantes consistant à : lire une première valeur de point de support (110) du paramètre (101), qui est attribuée à une première température prédéfinie (111), à partir d'un ensemble de données ; lire une deuxième valeur de point de support (112) du paramètre (101), qui est attribuée à une deuxième température prédéfinie (113), à partir de l'ensemble de données, la deuxième température prédéfinie (113) étant inférieure à la première température prédéfinie (111) ; lire une troisième valeur de point de support (114) du paramètre (101), qui est attribuée à une troisième température prédéfinie (115), à partir de l'ensemble de données, la troisième température prédéfinie (115) étant supérieure à la première température prédéfinie (111) ; et interpoler entre les valeurs de point de support (110, 112, 114) afin d'obtenir la courbe caractéristique de décalage (100). Le procédé comprend également b) l'ajustement de la courbe caractéristique de décalage (100), comprenant les étapes suivantes consistant à : recevoir une valeur d'ajustement (120) du paramètre (101) et une température d'ajustement (121) associée ; déterminer un écart de la valeur d'ajustement (120) à partir de la courbe caractéristique de décalage (100) ; ajuster au moins l'une des valeurs de point de support (110, 112, 114) sur la base de l'écart ; et ajuster la courbe caractéristique de décalage (100) sur la base de ladite au moins une valeur de point de support (110, 112, 114) ajustée. L'invention se rapporte également à une unité de commande correspondante.
PCT/EP2024/063107 2023-06-13 2024-05-13 Procédé de correction de décalages dans une unité de commande d'un véhicule à moteur et unité de commande correspondante Ceased WO2024256099A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP24727178.6A EP4727785A1 (fr) 2023-06-13 2024-05-13 Procédé de correction de décalages dans une unité de commande d'un véhicule à moteur et unité de commande correspondante
CN202480039244.2A CN121358625A (zh) 2023-06-13 2024-05-13 用于校正机动车辆的控制单元中偏移量的方法以及对应的控制单元

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Application Number Priority Date Filing Date Title
DE102023205497.3 2023-06-13
DE102023205497.3A DE102023205497A1 (de) 2023-06-13 2023-06-13 Verfahren zur Offsetkorrektur in einem Steuergerät eines Kraftfahrzeugs sowie entsprechendes Steuergerät

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WO2024256099A1 true WO2024256099A1 (fr) 2024-12-19

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EP (1) EP4727785A1 (fr)
CN (1) CN121358625A (fr)
DE (1) DE102023205497A1 (fr)
WO (1) WO2024256099A1 (fr)

Citations (3)

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Publication number Priority date Publication date Assignee Title
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EP3076193A1 (fr) * 2015-03-18 2016-10-05 Volkswagen AG Dispositif et procede de mesure de courant dans un conducteur dans un reseau electrique embarque de vehicules motorises
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