CN117715783A - Inspection device for the operation of an electric machine in a vehicle and method for inspecting the operation of an electric machine in a vehicle - Google Patents

Inspection device for the operation of an electric machine in a vehicle and method for inspecting the operation of an electric machine in a vehicle Download PDF

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Publication number
CN117715783A
CN117715783A CN202280052304.5A CN202280052304A CN117715783A CN 117715783 A CN117715783 A CN 117715783A CN 202280052304 A CN202280052304 A CN 202280052304A CN 117715783 A CN117715783 A CN 117715783A
Authority
CN
China
Prior art keywords
vehicle
impending
period
deceleration
rotational speed
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.)
Pending
Application number
CN202280052304.5A
Other languages
Chinese (zh)
Inventor
V·霍夫萨斯
G·沃尔夫
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of CN117715783A publication Critical patent/CN117715783A/en
Pending legal-status Critical Current

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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
    • B60L3/0061—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electrical 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
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0007—Measures or means for preventing or attenuating collisions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units, or advanced driver assistance systems for ensuring comfort, stability and safety or drive control systems for propelling or retarding the vehicle
    • B60W30/18—Propelling the vehicle
    • B60W30/18009—Propelling the vehicle related to particular drive situations
    • B60W30/18109—Braking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/02—Ensuring safety in case of control system failures, e.g. by diagnosing, circumventing or fixing failures
    • B60W50/0205—Diagnosing or detecting failures; Failure detection models
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/02—Ensuring safety in case of control system failures, e.g. by diagnosing, circumventing or fixing failures
    • B60W50/0205—Diagnosing or detecting failures; Failure detection models
    • B60W2050/021—Means for detecting failure or malfunction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W50/00—Details of control systems for road vehicle drive control not related to the control of a particular sub-unit, e.g. process diagnostic or vehicle driver interfaces
    • B60W50/02—Ensuring safety in case of control system failures, e.g. by diagnosing, circumventing or fixing failures
    • B60W50/0205—Diagnosing or detecting failures; Failure detection models
    • B60W2050/022—Actuator failures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/08—Electric propulsion units
    • B60W2510/081—Speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/08—Electric propulsion units
    • B60W2510/081—Speed
    • B60W2510/082—Speed change rate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2520/00—Input parameters relating to overall vehicle dynamics
    • B60W2520/10—Longitudinal speed
    • B60W2520/105—Longitudinal acceleration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2540/00—Input parameters relating to occupants
    • B60W2540/12—Brake pedal position

Abstract

The invention relates to a test device (KE) for the operation of an electric motor in a vehicle (F), comprising a control device (SE) which is connected or connectable to a rotational speed sensor (DG) of the Electric Motor (EM) of the vehicle (F) and to the Electric Motor (EM), and wherein the control device (SE) is connected or connectable to a system control (ST) of a vehicle component in the vehicle (F), wherein the control device (SE) is designed to detect a trend of the rotational speed of the electric motor for a defined period of time by means of the rotational speed sensor (DG), to detect or to exclude an impending seizing of the electric motor for an impending period of operation of the electric motor from such trend, and to operate the system control (ST) in accordance with a predefined scenario for the impending seizing in the impending period of operation, and/or to operate the system control (ST) in accordance with a predefined scenario for the lack of seizing in the impending period of operation.

Description

Inspection device for the operation of an electric machine in a vehicle and method for inspecting the operation of an electric machine in a vehicle
Technical Field
The present invention relates to a test device for the operation of an electric machine in a vehicle and to a method for testing the operation of an electric machine in a vehicle.
Background
In a typical drive scheme for electrically operated vehicles, jamming of the electric motor (blockier) may occur when using the electric motor, in particular in electric-only vehicles. For this case, it can be advantageous to then be able to operate the vehicle system as a function of the stuck or non-stuck motor. Thus, for example, premature triggering of the airbag can be suppressed or corresponding measures can be initiated in the dynamic adjustment of the vehicle.
A method for operating a creep mode in a motor vehicle is described in DE 1020210101348 A1.
Disclosure of Invention
The invention realizes a test device for the operation of an electric motor in a vehicle according to claim 1 and a method for testing the operation of an electric motor in a vehicle according to claim 6.
Preferred developments are the subject matter of the dependent claims.
THE ADVANTAGES OF THE PRESENT INVENTION
The invention is based on the idea of providing a test device for the operation of an electric machine in a vehicle and a method for testing the operation of an electric machine in a vehicle, wherein the operation of a system control for a vehicle component is able to take into account the operating state of the electric machine with respect to the possibility of a jam of the electric machine.
According to the invention, a test device for the operation of an electric machine in a vehicle comprises a control device which is connected or connectable to a rotational speed sensor of the electric machine of the vehicle and/or to the electric machine, and wherein the control device is connected or connectable to a system control of a vehicle component in the vehicle, wherein the control device is designed to detect a trend of the rotational speed of the electric machine within a defined time period by means of the rotational speed sensor, to detect or to exclude an impending jam of the electric machine for an impending operating time period from such a trend, and to operate the system control according to a predefined scenario for the impending jam in the impending operating time period, and/or to operate the system control according to a predefined scenario for the absence of a jam (ausbleben) in the impending operating time period.
The system control portion can be a control portion for an airbag or other vehicle system. The system control can then be set up for the operation or scenario, what should be done in the event of a jam of the machine, or what should be done in the event of a lack of a jam.
The determined time period can be a time period tracked currently or in the past while traveling.
By eliminating or identifying the absence of a jam can be meant that at least one probability for a jam is ranked lower.
The upcoming operating period can be an operating phase of the machine after the determined period.
The presence of a jam of the electric motor or an increased probability for the jam can be detected in advance, for example, by an evaluation unit of a rotational speed detector of the electric motor. The evaluation unit can detect the drastically reduced pulse number and take into account the data of the acceleration sensor mounted on the vehicle side and infer a possible jam in the foreseeable future. These values are evaluated, for example, in a drive train controller and provided to other relevant controllers, in particular an airbag controller and/or a control device for driving (Vehicle Motion Control (vehicle movement control) controller).
For such identification of an increased probability of jamming, the system according to the invention is able to know the critical threshold valueAnd it is used for comparison, for example, that a drastic reduction in the rotational speed of the motor is > 75% in 100ms or > 4m/s (acquired at the acceleration sensor) 2 Such a drastic reduction enables to determine a stuck electric motor, for example without simultaneous actuation of the brake pedal. If at the same time no deceleration signal corresponding to the accident can be detected, the triggering of the airbag can be prevented, for example.
In addition to the proposed solution of the test device, a fault in the drive train can also be determined in an automated vehicle and a corresponding communication with the control system of the vehicle components in the vehicle and with the driving system or support system is ensured, or at least the possibilities for this are improved. For this purpose, different information can be considered, such as rotational speed sensors at one or more wheels, the coupling state of the motor, the braking intervention performed or not performed and/or the airbag acceleration sensor. Since the rotational speed of the machine can flow directly into the regulation of the machine and, in the case of a connected transmission, can directly determine the speed, the motor can always be detected.
From a sudden disturbance of the rotational speed of the motor in the signal profile of the rotational speed sensor of the motor, for example, a change to a standstill, a jam of the motor or at least one increased probability for the jam can be detected or predicted in a first step.
This can be verified in a possible second step, for example, using a known target value of the braking torque (distinguished by severe braking interventions and/or accidents).
In a possible third step, this can be compared in a verified manner with the signal profile of the acceleration sensor (for motor faults, the limit value can be below 1 g).
In a fourth step, the state of coupling of the motor can be checked, if the machine is coupled (at the wheels) and the wheel speed sensor shows the same trend as the speed sensor of the motor, then decoupling of the motor can be performed and it can be checked whether a difference between the wheel speed and the machine speed then occurs, in which case a fault in the motor or at least an increased probability for this can be deduced. As a further possibility, a coupling failure can be diagnosed if the wheel speed and the machine speed remain equal despite decoupling.
If a fault is diagnosed, decoupling of the motor can take place and the fault condition is displayed and reported to the plant by communication. If decoupling cannot be achieved, a fault condition can be output and communication can be used to report that the vehicle should not be towed away through the drive shaft. The fault condition can be output by a variety of types. In one aspect, output is directly to the driver through a driver display at the dashboard and/or output is directly to the trailer through a projection onto the road in front of the vehicle and/or output is directly to a service provider through a communication interface, which service provider correspondingly instructs the trailer company.
According to a preferred embodiment of the checking device, the system control of the vehicle component comprises a system control for the airbag and, depending on the predefined scenario for the impending jam, the triggering of the airbag can be prevented.
It is then advantageously possible to exclude the possibility of triggering the air bag or reducing the probability of this in the event of an increased risk of jamming of the machine.
According to a preferred embodiment of the checking device, the control device is configured to detect the extent of the decrease in the number of measured measuring pulses in the determined time period by means of the rotational speed sensor and to compare it with a predefined decrease value, and to infer an impending jam in the impending operating time period if the extent of the decrease is equal to or greater than the predefined decrease value.
The rotational speed sensor is capable of transmitting the number of measured measurement pulses as a measurement signal.
If an increased probability of a machine jam can then be taken into account, the reduction value can in this case itself indicate how the number of measured measuring pulses of the rotational speed sensor would be reduced.
According to a preferred embodiment of the checking device, the control device is connected or connectable to an acceleration sensor at the vehicle or in a vehicle component and is designed to detect a deceleration of the vehicle in a defined time period and to compare it with a predefined deceleration, and to detect an impending jam in the impending operating time period if the deceleration of the vehicle is equal to or greater than the predefined deceleration or corresponds to a predefined trend of the deceleration in the defined time period.
By using an acceleration sensor, the measurement at the rotational speed sensor can be verified, so that the probability of a machine sticking can be better evaluated.
According to a preferred embodiment of the checking device, the control device is connected or connectable to a pedal sensor with which actuation of a brake pedal in the vehicle can be measured, and the control device is designed to check the detection of an impending jamming of the electric motor from a trend of the rotational speed of the electric motor by a lack of actuation of the brake pedal.
By using a pedal sensor, the measurement at the rotational speed sensor can be verified and estimated in terms of the characteristics of the vehicle and the probability of a jam.
According to the invention, in a method for checking the operation of an electric motor in a vehicle, the speed profile of the electric motor is acquired by means of a speed sensor for a defined period of time using the checking device according to the invention; identifying or excluding an impending stuck motor for an impending operating time period of the motor from such a trend; operating the system control according to a predefined scenario for an upcoming jam in an upcoming operating time period; and/or operating the system control in accordance with a predefined scenario for the absence of a jam in the upcoming operating time period.
According to a preferred embodiment of the method, the degree of reduction of the measured pulse number of the measuring pulse in the determined time period is detected and compared with a predefined reduction value, and if the degree of reduction is equal to or greater than the predefined reduction value, an impending jam in the impending operating time period is detected.
According to a preferred embodiment of the method, the deceleration of the vehicle in the determined time period is acquired and compared with a predefined deceleration, and an impending jam in the impending operating time period is inferred if the deceleration of the vehicle is equal to or greater than the predefined deceleration or corresponds to a predefined trend of the deceleration in the determined time period.
According to a preferred embodiment of the method, the actuation of the brake pedal in the vehicle is measured and the detection of an impending jamming of the motor is verified from the trend of the rotational speed of the motor by the lack of actuation of the brake pedal.
According to a preferred embodiment of the method, the deceleration corresponds to 4m/s 2.
The checking device can also be distinguished by the features mentioned in connection with the method and by the advantages thereof and vice versa.
Additional features and advantages of embodiments of the invention will be made apparent from the following description of the invention which refers to the accompanying drawings.
Drawings
The invention is explained in more detail below with reference to embodiments specified in the schematic drawing of the figures.
Wherein:
FIG. 1 shows a schematic view of an inspection apparatus according to one embodiment of the invention;
FIG. 2 shows a flow chart for an embodiment of a method according to an embodiment of the invention;
fig. 3 shows a block diagram of method steps of a method for checking the operation of an electric machine in a vehicle according to an embodiment of the invention.
Detailed Description
In the drawings, like reference numbers indicate identical or functionally identical elements.
Fig. 1 shows a schematic view of an inspection device according to an embodiment of the invention.
The checking device KE for the operation of the electric machine in the vehicle F comprises a control device SE which is connected or connectable to a rotational speed sensor DG of the electric machine EM of the vehicle F and to the electric machine EM, and wherein the control device SE is connected or connectable to a system control ST of a vehicle component in the vehicle F, wherein the control device SE is set up to detect a trend of the rotational speed of the electric machine within a defined time period by means of the rotational speed sensor DG, and to detect or exclude an impending jam of the electric machine for an impending operating time period from such a trend, and to operate the system control ST in accordance with a predefined scenario for the impending jam in the impending operating time period, and/or to operate the system control ST in accordance with a predefined scenario for the absence of the jam in the impending operating time period.
The control device SE can be connected or connectable to a pedal sensor PS with which actuation of a brake pedal in the vehicle can be measured, and is set up to verify the detection of an impending jamming of the electric machine from the trend of the rotational speed of the electric machine by the lack of actuation of the brake pedal.
The pedal sensor PS can be present in the vehicle and/or be comprised by the checking device KE.
Fig. 2 shows a flow chart for an embodiment of a method according to an embodiment of the invention.
The control device SE can advantageously receive the first signal a of the rotational speed sensor or of its evaluation unit, wherein a reduced number of pulses can be detected, and in addition, the second signal B of the brake pedal is received or (if no or only very little braking is performed) is not received, and the third signal C of the evaluation unit of the acceleration sensor, for example, the acceleration sensor does not detect an accident pattern. If all three signals A, B and C are identified as "coincident" with respect to event Y, an increased probability of machine stuck can be inferred, and for example, the triggering of the air bag R is stopped.
The event "coincidence" can be a decrease in the number of pulses greater than or equal to a predetermined decrease a, a lack of braking B, and an acceleration mode without an accident event C. If one of these events (N) is not met, in particular with regard to the control of the vehicle system, no further action (no action K) can be taken by the control device, the manner of action of which can be dependent on the jamming of the machine.
Fig. 3 shows a block diagram of method steps of a method for checking the operation of an electric machine in a vehicle according to an embodiment of the invention.
In a method for checking the operation of an electric motor in a vehicle, the speed profile of the S1 electric motor is acquired by means of a speed sensor for a defined period of time using a checking device according to the invention; identifying S2a or excluding S2b an upcoming stuck of the motor for an upcoming operating time period of the motor from such a trend; operating S3a the system control according to a predefined scenario for an upcoming jam in an upcoming operating time period; and/or operating S3b the system control according to a predefined scenario for the absence of a jam in the upcoming operating time period.
Although the present invention has been fully described hereinabove according to the preferred embodiments, the present invention is not limited thereto but can be modified in various ways.

Claims (10)

1. Inspection device (KE) for the operation of an electric motor in a vehicle (F), comprising a control device (SE) which is connected or connectable to a rotational speed sensor (DG) of the Electric Motor (EM) of the vehicle (F) and/or to the Electric Motor (EM), and wherein the control device (SE) is connected or connectable to a system control (ST) of a vehicle component in the vehicle (F), wherein the control device (SE) is designed to detect a trend of the rotational speed of the electric motor for a determined period of time by means of the rotational speed sensor (DG), and to identify or exclude an impending seizing of the electric motor for an impending period of operation of the electric motor from such a trend, and to operate the system control (ST) in accordance with a predefined scenario for an impending seizing in the impending period of operation, and/or to operate the system control (ST) in accordance with a predefined scenario for a lack of seizing in the impending period of operation.
2. The checking device (KE) according to claim 1, wherein the system control (ST) of a vehicle component is a system control for an airbag and can prevent the triggering of an airbag depending on a predefined scenario for an impending jam.
3. The checking device (KE) according to claim 1 or 2, wherein the control device (SE) is designed to detect a degree of reduction of the measured pulse number of the measuring pulse in a defined period of time by means of a rotational speed sensor (DG) and to compare it with a predefined reduction value and to infer an impending jam in an impending operating period if the degree of reduction is equal to or greater than the predefined reduction value.
4. A checking device (KE) according to any one of claims 1 to 3, wherein the control device (SE) is connected or connectable to an acceleration sensor at the vehicle or in the vehicle component and is set up to acquire and compare a deceleration of the vehicle in a determined period of time with a predefined deceleration and to identify an impending jam in an impending operating period if the deceleration of the vehicle is equal to or greater than the predefined deceleration or corresponds to a predefined trend of the deceleration in the determined period of time.
5. The checking device (KE) according to any one of claims 1 to 4, wherein the control device (SE) is connected or connectable to a Pedal Sensor (PS) with which an actuation of a brake pedal in the vehicle can be measured, and wherein the control device (SE) is designed to verify an identification of an impending jam of the motor from a trend of the rotational speed of the motor by a lack of actuation of the brake pedal.
6. Method for checking the operation of an Electric Machine (EM) in a vehicle (F), comprising the steps of:
-acquiring (S1) a trend of the rotational speed of the electric machine by means of a rotational speed sensor (DG) within a determined period of time using a checking device (KE) according to any one of claims 1 to 5;
-identifying (S2 a) or excluding (S2 b) an upcoming stuck of the motor (EM) for an upcoming operating time period of the motor from such a trend;
-operating (S3 a) the system control (ST) according to a predefined scenario for an upcoming jam in an upcoming operating time period; and/or
-operating (S3 b) the system control (ST) according to a predefined scenario for the absence of the jam in the upcoming operating time period.
7. The method according to claim 6, wherein the degree of decrease in the pulse number of the measured measurement pulses in the determined time period is obtained and compared with a predetermined decrease value, and if the degree of decrease is equal to or greater than the predetermined decrease value, an impending jam in the impending operation time period is identified.
8. A method according to claim 6 or 7, wherein the deceleration of the vehicle in the determined period of time is obtained and compared with a pre-determined deceleration and an impending stuck in an impending operating period of time is inferred if the deceleration of the vehicle is equal to or greater than the pre-determined deceleration or corresponds to a pre-determined trend of the deceleration within the determined period of time.
9. A method according to any one of claims 6 to 8, wherein the manipulation of a brake pedal in the vehicle is measured and the identification of an impending stuck of the motor is verified from a trend in the rotational speed of the motor by the absence of manipulation of the brake pedal.
10. The method of any one of claims 8 or 9 (whenever claim 8 is appended back), wherein the deceleration corresponds to 4m/s 2.
CN202280052304.5A 2021-07-27 2022-07-11 Inspection device for the operation of an electric machine in a vehicle and method for inspecting the operation of an electric machine in a vehicle Pending CN117715783A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102021208050.2A DE102021208050A1 (en) 2021-07-27 2021-07-27 Monitoring device for operation of an electrical machine in a vehicle and method for monitoring operation of an electrical machine in a vehicle
DE102021208050.2 2021-07-27
PCT/EP2022/069231 WO2023006395A1 (en) 2021-07-27 2022-07-11 Monitoring device for operation of an electric machine in a vehicle, and method for monitoring operation of an electric machine in a vehicle

Publications (1)

Publication Number Publication Date
CN117715783A true CN117715783A (en) 2024-03-15

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202280052304.5A Pending CN117715783A (en) 2021-07-27 2022-07-11 Inspection device for the operation of an electric machine in a vehicle and method for inspecting the operation of an electric machine in a vehicle

Country Status (3)

Country Link
CN (1) CN117715783A (en)
DE (1) DE102021208050A1 (en)
WO (1) WO2023006395A1 (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE112016000358T5 (en) * 2015-01-16 2017-10-05 Magna Powertrain Bad Homburg GmbH Control and method for detecting a blockage condition of an electric machine
DE102016201348A1 (en) 2016-01-29 2017-08-03 Volkswagen Aktiengesellschaft Method, control device and switch system for operating a creep mode of a motor vehicle

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DE102021208050A1 (en) 2023-02-02
WO2023006395A1 (en) 2023-02-02

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