WO2024022752A1 - Verfahren und vorrichtung zur überwachung eines elektrischen antriebs eines kraftfahrzeugs - Google Patents
Verfahren und vorrichtung zur überwachung eines elektrischen antriebs eines kraftfahrzeugs Download PDFInfo
- Publication number
- WO2024022752A1 WO2024022752A1 PCT/EP2023/068308 EP2023068308W WO2024022752A1 WO 2024022752 A1 WO2024022752 A1 WO 2024022752A1 EP 2023068308 W EP2023068308 W EP 2023068308W WO 2024022752 A1 WO2024022752 A1 WO 2024022752A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- drive machine
- stator
- value
- drive
- vehicle
- 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
Links
Classifications
-
- 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
- B60L3/0084—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to control modules
-
- 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
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
-
- 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
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/40—Drive Train control parameters
- B60L2240/42—Drive Train control parameters related to electric machines
-
- 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
- B60L2250/00—Driver interactions
- B60L2250/16—Driver interactions by display
-
- 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
- B60L2260/00—Operating Modes
- B60L2260/40—Control modes
- B60L2260/44—Control modes by parameter estimation
Definitions
- the invention relates to a method and a corresponding device which are designed to monitor the operation of an electric drive machine of a motor vehicle.
- An at least partially electrically driven vehicle comprises an electric drive machine for driving the vehicle, for example a current-excited or permanently excited synchronous machine.
- the drive machine can be controlled by a control arrangement in order to ensure that a specific drive torque is provided by the drive machine.
- the present document deals with the technical task of providing a method and a corresponding device through which efficient and reliable monitoring and/or diagnosis of an electric drive machine of a vehicle is made possible, in particular in order to ensure long-term high performance of the drive machine.
- a device for monitoring an electric drive of a motor vehicle includes an electric drive machine and a control arrangement for controlling the drive machine.
- the control arrangement (which is arranged, for example, in a control unit of the vehicle) has a pilot control and a regulation.
- the control arrangement can include a pilot control unit for determining a pilot control component of a value of a manipulated variable (in particular the stator voltage) for the stator of the drive machine.
- the pilot control unit can use a model of the drive with one or more model parameters to determine the pilot control share.
- the parameter values of the one or more model parameters can be determined in advance of the Useful operation of the drive must have been determined and stored (e.g. during an end-of-line test as part of the assembly of the motor vehicle).
- the one or more model parameters may include: an angular offset 6 0 ff of an angular position sensor of the rotor of the prime mover; a magnetic flux caused by the rotor and/or a gain factor of a current sensor for detecting the actual value of the stator current of the drive machine (where the stator current represents the control variable of the control arrangement).
- the model used by the pilot control unit may include a model in the dq coordinate system.
- the angle offset 0 O ff of the angular position sensor of the Rotor of the drive machine can be used. An incorrect angle offset 0 Off can therefore lead to an incorrect pre-control component.
- An exemplary model for determining the pre-control portion of the value of the manipulated variable is:
- R is the ohmic resistance of the stator windings.
- the control arrangement can further comprise a controller (in particular a PI controller) which is set up on the basis of a control error between the actual value of the control variable (in particular the stator current of the stator of the drive machine) (measured by the current sensor) and the setpoint of the control variable (in particular the stator current) to determine the controller portion of the value of the manipulated variable (in particular the stator voltage) for the stator of the drive machine.
- the setpoint can be specified, for example, by the driver or by an automated driving function of the vehicle.
- the pre-control component and the controller component can be added to determine the value of the manipulated variable.
- the drive machine can then be operated with the determined value of the manipulated variable.
- the device is set up to determine (during the useful operation of the vehicle) on the basis of the controller portion for controlling the drive machine determined by the control arrangement that a pilot control error situation is present in the control (in particular in the pilot control) of the drive machine. It can therefore be recognized during useful operation of the vehicle on the basis of the controller share that there is an error situation in the pre-control of the drive machine.
- the device can be set up to determine that the drive machine was (continuously) operated in stationary operation during an observation period.
- the observation period can, for example, have a duration of one second or more, in particular 5 seconds or more. An observation period can therefore be recognized in which the drive machine is operated in stationary operation (so that the controller share should at least be zero on average over time if the model used by the feedforward control is correct).
- the device can also be set up to recognize that the controller share, particularly on average over time, was greater than a predefined controller threshold value during the observation period. It can then be determined in an efficient and reliable manner based on the fact that a pilot control error situation is present when controlling the drive machine.
- the device is furthermore set up, in response to the detected pilot control error situation, to effect at least one measure in relation to the recognized pilot control error situation and/or in relation to the electric drive.
- a measure for example, a message can be issued (via the user interface of the vehicle) to the user of the vehicle to the effect that the vehicle should be serviced.
- a number of tests can then be carried out to check the electric drive.
- measures can be taken to directly carry out a set, in particular a sequence or sequence, of tests to check the electric drive, in particular to check the model used by the pilot control unit (directly from the vehicle).
- the set of tests can be designed to check and, if necessary, update parameter values of one or more model parameters of the model used by the pilot control unit.
- the set of tests can be carried out in an efficient and convenient manner during the useful operation of the vehicle.
- the device can be set up to inform the user of the vehicle via a
- the vehicle is in a state that is suitable for carrying out the set of tests (without the user being requested to do so). In this way, the number of tests can be carried out in a particularly reliable manner.
- the device can be set up to determine, based on a result of the set of tests, that a maintenance situation of the drive of the vehicle exists (e.g. if it is recognized that the pilot control error situation can also be caused by updating the parameter values of the one or more model parameters cannot be fixed). The user of the vehicle can then be informed via the user interface that there is a maintenance situation for the vehicle's drive.
- a maintenance situation of the drive of the vehicle e.g. if it is recognized that the pilot control error situation can also be caused by updating the parameter values of the one or more model parameters cannot be fixed.
- a device is thus described which is designed to detect a faulty situation of the drive (in particular the pre-control of the drive) during the useful operation of the vehicle, and in response to this to carry out a set of tests to check the drive, the amount being Tests may make it possible to resolve the error situation automatically. This makes particularly comfortable and reliable operation of an electric drive of a motor vehicle possible.
- the device can be set up to check and/or, if necessary, update parameter values for the one or more model parameters based on the set of tests.
- the pilot control unit can then subsequently be operated with the one or more updated parameter values. In this way, the reliability of the electric drive can be further increased become.
- the set of tests can include a defined sequence of tests.
- the set of tests can include, for example, a High Frequency Signal Injection, HFSI, test.
- HFSI High Frequency Signal Injection
- the set of tests can include a flow test, which is carried out in particular (directly) following the HFSI test.
- the set of tests can include a sensor test, which is carried out in particular (directly) following the flow test.
- the device can be set up to cause a stator current with a (relatively high) measurement frequency as part of the HFSI test, and to determine (and if necessary update) a value of the angular offset 6 0 ff of the angular position sensor of the rotor of the drive machine based on the injected stator current ).
- the HFSI test can optionally be carried out when the vehicle is stationary (e.g. when the vehicle is at a red light).
- the measurement frequency may be a factor of 2 or more, or 5 or more, or 10 or more above the operating frequency of the stator current used to operate the prime mover.
- the operating frequency of the stator current can depend on the desired driving speed of the vehicle and/or on the desired speed of the drive machine.
- the device can be set up, as part of the flow test, to set the stator current through the stator of the drive machine to zero while the drive machine has a speed that deviates from zero.
- a value of the stator voltage on the stator of the drive machine can then be detected, and based on the value of the stator voltage, the value of the magnetic flux PM caused by the rotor of the drive machine can be determined and, if necessary, updated.
- the device can be set up, as part of the sensor test, to set the stator current through the stator of the drive machine to a defined level to set a (constant) value other than zero.
- a value of the stator voltage on the stator of the drive machine can then be recorded.
- the value of a gain factor of the current sensor for detecting the actual value of the stator current can then be determined and, if necessary, updated.
- the parameter values of one or more model parameters of the drive model can be checked and, if necessary, updated in an efficient and precise manner in order to automatically correct the identified pilot control error situation.
- a (road) motor vehicle in particular a passenger car or a truck or a bus or a motorcycle
- vehicle in particular a passenger car or a truck or a bus or a motorcycle
- a method for monitoring an electric drive of a motor vehicle includes an electric drive machine and a control arrangement for controlling the drive machine.
- the control arrangement has a pilot control and a regulation (for setting a manipulated variable, such as the stator voltage).
- the method includes determining, on the basis of the controller share determined by the control arrangement for controlling the drive machine, that a pilot control error situation is present in the control (in particular in the pilot control) of the drive machine.
- the method further includes effecting, in response to the detected pilot control error situation, at least one measure, in particular a set of tests, for checking the electric drive.
- one or more measures can then be implemented, in particular to reduce the input tax to resolve the error situation.
- the parameter values of one or more model parameters of the model used in the feedforward control may be updated based on the result of the set of tests to resolve the feedforward error situation.
- SW software program
- the SW program can be set up to run on a processor (e.g. on a vehicle control unit) and thereby carry out the method described in this document.
- the storage medium may include a SW program configured to be executed on a processor and thereby carry out the method described in this document.
- Figure 1 exemplary components of a vehicle
- Figure 2 shows an exemplary control arrangement for controlling and/or regulating an electric drive machine
- FIG. 1 shows an exemplary vehicle 100 with an electric drive machine 103 that is set up to drive the vehicle 100.
- the vehicle 100 further comprises a (control) device 101, which is set up to control the drive machine 103, for example to cause the drive machine 103 to respond to a request requested by the driver of the vehicle 100 via the accelerator pedal (not shown) of the vehicle 100 Drive torque is provided.
- the vehicle 100 further includes one or more sensors 102, which are set up to record sensor data in relation to the electric drive machine 103, in particular in relation to the stator current of the stator of the drive machine 103. Furthermore, the vehicle 100 may include a user interface 104 for interaction with the driver of the vehicle 100.
- Fig. 2 shows an exemplary control arrangement 200 for controlling the drive machine 103 (which can be part of the control device 101, for example).
- the control arrangement 200 includes a control loop with a controller 203 and a pilot control unit 210.
- Setpoints 201 can be specified for one or more control variables.
- the driver of the vehicle 100 can specify a specific value of the drive torque to be set, and based on this, setpoints 201 for the one or more control variables (e.g. for the stator current through the one or more windings of the stator of the drive machine 103) can be determined .
- the pilot control unit 210 can be set up to determine pilot control values 209 for one or more manipulated variables (eg for the stator voltage on the one or more stator windings of the stator) based on the setpoint values 201 for the one or more control variables.
- the Pilot control unit 210 a model of the drive machine 103 can be used, the model having one or more model parameters.
- the parameter values of one or more model parameters can be determined in advance (e.g. as part of an end-of-line (EOL) test).
- the drive machine 103 can be controlled in the dq coordinate system using the following model:
- L q and L d are the inductances of the stator windings in the dq coordinate system
- the current control of the drive machine 103 can be composed of a controller component 204 and a pilot control component 209, so that the following applies to the stator voltages u d and u q : ud - u d_PP + u d_PI
- Uq Uq_ FF + q pi where u d _ FF and u q _ FF are the pre-control components 209 of the stator voltages; and u d PI and u q PI are the controller components 204 of the stator voltages.
- the pilot control unit 210 can be set up to determine the pilot control components 209 of the stator voltages based on the setpoint values 201 for the stator currents i q and i d .
- the above model can be used for the drive machine 103, for example 'irf)
- the controller components 204 can be determined from the control error 202 using a controller 203, for example using a PI controller, the control error 202 being the difference between the setpoint 201 of the one or more control variables and the actual value 208 of the one or more control variables (e.g. the stator currents).
- the sum of the respective controller component 204 and the respective pilot control component 209 then results in the values 206 of the one or more manipulated variables (e.g. the stator voltages). These are converted into the actual values 208 of the one or more control variables by the system 207 to be controlled (i.e. by the drive machine 103).
- the controller share 204 In stationary operation of the drive machine 103, i.e. with a constant setpoint 201 of the one or more control variables, the controller share 204 should be zero, at least on a time average over an observation period. On the other hand, if in stationary operation there is a controller component 204 that systematically deviates from zero, this may be an indication of an impairment of the electric drive machine 103 and/or the control arrangement 200. Examples of impairments are:
- an impairment of the current sensors 102 for detecting the stator currents e.g. a deviation in relation to a gain factor used by a current sensor 102).
- the (control) device 101 can thus be set up to detect a pre-control error situation based on the controller component 204 of the control arrangement 200, in which the pre-control component 209 of the control arrangement 200 has a systematic error (which may be compensated for by the controller component 204). In response to this, a number of tests can be carried out to check the engine 103 and, if necessary, to correct the pilot control error situation.
- the set of tests may include a so-called HFSI (High Frequency Signal Injection) test, in which a current with a relatively high (measuring) frequency is injected into one or both axes of the dq coordinate system.
- HFSI High Frequency Signal Injection
- the correct value of the angular offset a> e of the rotor's angular position sensor can be determined.
- the HFSI test can be carried out when the engine 103 is in a stationary operating state, in particular when the vehicle 100 is at a standstill. For this purpose, for example, to carry out the HFSI test, one can wait for the vehicle 100 to come to a standstill (e.g. at a red traffic light).
- the correct value of the angular offset 0 O ff of the angular position sensor of the rotor can therefore be determined in a first test. This value can then be adopted into the model for the drive machine 103.
- the transformation of one or more model parameters and/or one or more (voltage and/or current) signals (such as the Stator voltage and/or the stator current) into the dq coordinate system based on the correct value of the angle offset 6 0 ff.
- the magnetic flux pM of the rotor can be determined.
- the stator currents i q and i d can be set to zero and/or interrupted. This can be achieved by converting the inverter to a so-called “freewheeling” state to generate the stator currents.
- the resulting stator voltages can then be measured based on: TO determine the magnetic flux PM . If there is a deviation from the stored value of the magnetic flux, the corrected value of the magnetic flux can be included in the model of the drive machine 103.
- stator currents can each be set to a defined value (at a standstill or at a specific driving speed).
- the values of the stator voltages can then be determined, in particular measured or estimated based on a model. At constant currents this results
- the set of tests can thus be used to update the calibration of the parameter values of one or more model parameters of the model for the pilot control of the electric machine 103. In this way, the quality of the control of the electrical machine 103 can be increased.
- a message can possibly be issued to the driver of the vehicle 100 via the user interface 104 in order to prompt the driver to drive the vehicle 100 to a repair shop .
- the set of tests may be performed during operation of the vehicle 100.
- the driver can, if necessary, be informed via the user interface 104 that a number of tests are being carried out. If necessary, the driver can be requested to transfer the vehicle 100 to a defined state (e.g. standstill) in order to carry out the set of tests. This makes it possible to conveniently and safely check the control of the electric drive machine 103.
- Fig. 3 shows a flowchart of a (possibly computer-implemented) method 300 for monitoring an electric drive of a motor vehicle 100.
- the drive comprises an electric drive machine 103 and a control arrangement 200 for controlling the drive machine 200.
- the control arrangement 200 a pilot control and a regulation.
- the control arrangement 200 can include a pilot control unit 210, which is set up to determine (based on the setpoint 201 of a control variable, such as the stator current) a pilot control component 209 of the value 206 of the manipulated variable (such as the stator voltage).
- the control arrangement 200 can include a controller 203, which is set up based on the Setpoint 201 and based on the measured actual value 208 of the control variable to determine a controller share 204 of the value 206 of the manipulated variable.
- the method 300 includes determining 301, based on the controller portion 204 determined by the control arrangement 200 for controlling the drive machine 200, that a pilot control error situation is present in the control (in particular in the pilot control) of the drive machine 200.
- the controller portion 204 can be analyzed to detect that the feedforward control of the prime mover 200 is faulty.
- the (possibly cumulative) controller share 204 can be determined during an observation period in which the drive machine 200 was (continuously) in a stationary state. If the feedforward control is error-free, the control component 204 should be zero during the observation period (at least on average over time).
- a controller share 204 that deviates from zero is an indication of faulty pre-control, i.e. a pre-control error situation.
- the method 300 further includes effecting 302, in response to the detected pilot control error situation, at least one measure for checking the electric drive.
- a number of tests can be carried out to check the electric drive.
- a sequence of tests such as an HSFI test, followed by a flow test and possibly followed by a sensor test, can be carried out.
- the parameter values of one or more model parameters of the input control unit 210 can be checked and, if necessary, updated in order to resolve the input control error situation. If the pilot control error situation can be remedied, the electric drive can continue to be operated directly.
- the driver of the vehicle 100 may be requested to have the vehicle 100 serviced.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202380035482.1A CN119072416A (zh) | 2022-07-29 | 2023-07-04 | 用于监控机动车的电气的驱动装置的方法和设备 |
| US18/863,728 US20250296445A1 (en) | 2022-07-29 | 2023-07-04 | Method and Device for Monitoring an Electric Drive of a Motor Vehicle |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022119059.5A DE102022119059A1 (de) | 2022-07-29 | 2022-07-29 | Verfahren und Vorrichtung zur Überwachung eines elektrischen Antriebs eines Kraftfahrzeugs |
| DE102022119059.5 | 2022-07-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024022752A1 true WO2024022752A1 (de) | 2024-02-01 |
Family
ID=87196360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2023/068308 Ceased WO2024022752A1 (de) | 2022-07-29 | 2023-07-04 | Verfahren und vorrichtung zur überwachung eines elektrischen antriebs eines kraftfahrzeugs |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20250296445A1 (de) |
| CN (1) | CN119072416A (de) |
| DE (1) | DE102022119059A1 (de) |
| WO (1) | WO2024022752A1 (de) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003001653A1 (en) * | 2001-06-26 | 2003-01-03 | Ecicm B.V. | Linear motor comprising an improved function approximator in the controlling system |
| US20150185288A1 (en) * | 2012-06-18 | 2015-07-02 | Protean Electric Limited | Method and control unit for an electric motor or generator |
| DE102017207536A1 (de) * | 2017-05-04 | 2018-11-08 | Bayerische Motoren Werke Aktiengesellschaft | Steuereinheit und System zur Stabilisierung eines Fahrzeugs |
-
2022
- 2022-07-29 DE DE102022119059.5A patent/DE102022119059A1/de active Pending
-
2023
- 2023-07-04 CN CN202380035482.1A patent/CN119072416A/zh active Pending
- 2023-07-04 WO PCT/EP2023/068308 patent/WO2024022752A1/de not_active Ceased
- 2023-07-04 US US18/863,728 patent/US20250296445A1/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003001653A1 (en) * | 2001-06-26 | 2003-01-03 | Ecicm B.V. | Linear motor comprising an improved function approximator in the controlling system |
| US20150185288A1 (en) * | 2012-06-18 | 2015-07-02 | Protean Electric Limited | Method and control unit for an electric motor or generator |
| DE102017207536A1 (de) * | 2017-05-04 | 2018-11-08 | Bayerische Motoren Werke Aktiengesellschaft | Steuereinheit und System zur Stabilisierung eines Fahrzeugs |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102022119059A1 (de) | 2024-02-01 |
| US20250296445A1 (en) | 2025-09-25 |
| CN119072416A (zh) | 2024-12-03 |
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