EP3857703A1 - Method for operating an electric drive unit, preferably for adjusting a component in the motor vehicle, and drive unit for carrying out said method - Google Patents
Method for operating an electric drive unit, preferably for adjusting a component in the motor vehicle, and drive unit for carrying out said methodInfo
- Publication number
- EP3857703A1 EP3857703A1 EP19779419.1A EP19779419A EP3857703A1 EP 3857703 A1 EP3857703 A1 EP 3857703A1 EP 19779419 A EP19779419 A EP 19779419A EP 3857703 A1 EP3857703 A1 EP 3857703A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- signal
- drive unit
- acceleration sensor
- rotor
- ripple
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 31
- 230000001133 acceleration Effects 0.000 claims abstract description 79
- 230000000737 periodic effect Effects 0.000 claims abstract description 12
- 238000001514 detection method Methods 0.000 claims description 21
- 238000011156 evaluation Methods 0.000 claims description 12
- 230000005284 excitation Effects 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 230000006978 adaptation Effects 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 claims description 2
- 230000001960 triggered effect Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 claims 1
- 230000005236 sound signal Effects 0.000 description 6
- 238000005259 measurement Methods 0.000 description 5
- 230000001419 dependent effect Effects 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 238000012937 correction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012854 evaluation process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/14—Electronic commutators
- H02P6/16—Circuit arrangements for detecting position
- H02P6/18—Circuit arrangements for detecting position without separate position detecting elements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/244—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
- G01D5/245—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains using a variable number of pulses in a train
- G01D5/2451—Incremental encoders
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
- G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/244—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
- G01D5/24457—Failure detection
- G01D5/24461—Failure detection by redundancy or plausibility
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/244—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
- G01D5/24471—Error correction
- G01D5/24476—Signal processing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/244—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
- G01D5/245—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains using a variable number of pulses in a train
- G01D5/2454—Encoders incorporating incremental and absolute signals
- G01D5/2455—Encoders incorporating incremental and absolute signals with incremental and absolute tracks on the same encoder
Definitions
- the invention relates to a method for operating an electric drive unit, preferably for adjusting a component in a motor vehicle, and a drive unit for carrying out the method according to the independent claims.
- DE 10 2009 000 021 A1 has disclosed a method for operating an actuating drive in which an acceleration measurement of the motor vehicle or of the component to be adjusted is carried out in order to improve the protection against trapping of a motor vehicle component.
- the position of the component, or of the rotor is carried out via a position sensor, which can be designed, for example, as one or two Hall sensors on the rotor shaft.
- the rotational position of the rotor can also be detected via a motor current signal, the current ripple of which is evaluated for the speed or the position detection.
- the disadvantage of this solution is that, in addition to the acceleration sensor for the pinch protection, a position sensor system and / or motor current measurement must be provided in order to determine the position of the part to be adjusted.
- the aim of the invention is to provide a very inexpensive position detection which is very flexible with regard to the spatial arrangement in the actuator. Disclosure of the invention
- the inventive method for operating a drive unit of a motor vehicle component preferably a side window, a sunroof or Wegkom components, and the drive unit for executing the method with the features of the independent claims have the advantage that the acceleration of the structure-borne sound signal - Sensor of the drive unit a rotor position dependent evaluation signal for the position detection of the drive is provided. This makes it possible to dispense with additional position sensors, such as magnetic encoders with magnetic sensors or a current measurement for a current ripple signal.
- the drive unit can be manufactured more cost-effectively and the acceleration sensor requires comparatively less installation space.
- the installation position of the acceleration sensor in the drive unit is very flexible and does not have to be arranged directly on the rotor shaft. This allows the architecture of the electronics board to be designed much more freely than using a Hall sensor.
- the determined ripple frequency can be used to directly infer the speed of the rotor. This eliminates the Effort for the current measurement or the arrangement of a Hall sensor system for generating an evaluable incremental signal.
- the commutation frequency can be separated from their harmonics, so that with a full rotor revolution over 360 ° a defined number of ripples can be counted, which corresponds to the number of fins.
- an incremental signal can be generated for the position detection of the part to be adjusted.
- the speed of the rotor can also be determined from the number of ripples per rotor revolution via the number of ripples per unit of time.
- the ripple of the acceleration signal can be used both for determining the speed and for detecting the position of the part to be adjusted.
- Such a method can therefore be used for actuators as well as for lathes such as blowers and pumps.
- the structure-borne sound signal provides easily reproducible, unique periodic ripples enables the advantages of the current ripple evaluation method to be used.
- the ripple signal of the body sound excitation is more stable over long operating times since it does not depend on brush wear or the tolerance-sensitive position of the brushes relative to the commutator.
- the structure-borne noise signal is also generated directly by the changing magnetic fields in the electric motor and is therefore more independent of a change in the motor current.
- the harmonics can be separated from the ripple frequency.
- the ripple frequency can be estimated in the normal operating state by an estimation method, so that a special filter can be applied to the expected ripple frequency.
- the number of ripples per rotor revolution can be clearly reduced to the number of commutator lamellae, so that a unique ripple count signal is generated.
- the rotor frequency then always corresponds to the ripple frequency divided by the number of commutator fins.
- Irregularities in the manufacture of the rotor can be used particularly advantageously for the acceleration signal with respect to the individual rotor to synchronize rotations.
- Manufacturing inaccuracies in the sheet metal section of the armature or variations in the windings lead to the fact that a certain angular range has a characteristic signal pattern over the entire rotation angle of 360 °. This occurs at exactly the same angular range with each rotor revolution and can therefore be used to always identify a certain rotational position of the rotor.
- the acceleration sensor when the acceleration sensor is arranged on the electronic circuit board of the electric motor, on which a microprocessor is preferably also arranged, is particularly favorable. As a result, the acceleration sensor can be connected directly to the microprocessor by means of conductor tracks on the circuit board without additional effort.
- the evaluation unit for the acceleration signal is preferably formed in the microprocessor so that the speed and / or the position of the part to be adjusted can be determined directly on the printed circuit board of the electric motor. Therefore, in the case of actuators with integrated electronics and / or plug-in electronics, position detection can be implemented without additional sensor cables.
- acceleration sensor on a smaller sensor circuit board in the electric motor and to carry out the signal evaluation in a central control device - in particular for several electric motors at the same time.
- MEMS sensors micro-electro-mechanical system
- Such a MEMS sensor can record structure-borne sound vibrations in all spatial directions, the structure-borne sound excitation having no preferred direction.
- the MEMS sensor can be integrated in an ASIC component or can be arranged as a separate sensor element directly on the circuit board, for example using SMD technology. Since mechanical vibrations of motor components are measured here, they are less susceptible to electromagnetic interference.
- Such a structure-borne noise signal from the MEMS sensor is very robust with regard to manufacturing tolerances, in particular of the brush system and against component wear. It is particularly advantageous to use such an acceleration sensor for electronics which also have an anti-trap function for the part to be adjusted.
- the structure-borne noise signal from the acceleration sensor can be used for position detection and / or speed determination, which can be used as a characteristic variable for the actuating force of the electric motor.
- the acceleration sensor can also detect external acceleration which act on the entire vehicle or on the part to be adjusted.
- Such an external acceleration signal has no periodic ripple, but usually occurs as a pulse or as noise, which is used in the anti-trap protection to prevent false triggering of the anti-trap protection - for example in the case of a jogger.
- Such an external acceleration signal is in particular superimposed on the periodic ripple of the body sound signal and can be identified as an external disturbance in the pinching algorithm.
- the frequency range for the periodic ripple of the acceleration signal is between 200 Hz and 2000 Hz, depending on the number of commutator bars and the adjustment application. However, a DC motor with ten or fourteen commutator bars is preferably used. From this frequency range of the ripple frequency, a vibration that is excited by an external acceleration of the vehicle can be easily distinguished. Their noise frequencies are normally below 200 Hz.
- the inventive method for operating an electric motor can be implemented particularly cheaply in a drive unit that adjusts moving parts in the motor vehicle.
- the drive unit has a control unit with an electronic circuit board on which the additional acceleration sensor can be arranged without much additional effort.
- the structure-borne noise signal of the electric motor can then be evaluated directly in the electronics unit of the drive unit, in particular in order to implement position detection for the part to be adjusted.
- an acceleration sensor on a printed circuit board of the electric motor can also determine the speed, for example for a rotary drive without great additional costs.
- Such a drive unit in the motor vehicle has a corresponding transmission which reduces the speed of the rotor to a speed on the output pinion that is suitable for the application.
- a predeterminable position of the part to be adjusted can be approached automatically, and at the same time this position detection can also be used to implement an anti-trap function.
- this speed can be determined directly from the structure-borne sound signal of the acceleration sensor. An unforeseen change in the speed is then interpreted as a trapping situation, whereupon the component to be adjusted is stopped or reversed.
- the same acceleration sensor can also determine the external acceleration of the part to be adjusted in order to avoid a false triggering of the pinch protection.
- An actuator is also proposed in which the acceleration sensor is arranged in the actuator.
- the actuator is firmly connected to the motor vehicle, in particular screwed or riveted to a door or another component of the motor vehicle.
- the acceleration sensor arranged there in this actuator would accordingly detect accelerations of the entire motor vehicle, which can be related to a determined case of pinching, so that it can be verified or falsified. This is achieved in that values of this acceleration sensor arranged in the actuator, which reflect a corresponding acceleration transverse to the direction of travel of the vehicle, indicate a vibration of the entire vehicle.
- the acceleration sensor arranged in the actuator is therefore also used to detect accelerations of the entire motor vehicle in order to rule out a trapping event.
- FIG. 1 shows an actuator of a motor vehicle according to the invention for the Ver a component in the motor vehicle
- Fig. 2b is a Fourier transform generated frequency spectrum of the acceleration signal of Fig. 2a.
- Fig. 3 is a schematic representation of the evaluation process according to the invention of the structure-borne noise signal according to Fig. 2a.
- Figure 1 shows an actuator 10 for a component in a motor vehicle, for example, a side window, a sunroof, or a seat component.
- a side window can be opened or closed via a connecting rod connected to it or a cable pull.
- the side window is arranged together with the actuator 10, for example in a vehicle door of the motor vehicle.
- the actuator 10 has a Elektromo gate 12, which is preferably designed as a DC DC motor.
- 14 permanent magnets 16 are arranged in a pole housing, which drive a rotor 18 mounted in the pole housing 14.
- Electrical windings 20 are arranged on the rotor 18 and are energized via a commutator 22.
- the commutator 22 has a plurality of commutator bars 24, which are in sliding contact with current brushes 26 of a brush holder component 28.
- the electric motor 12 is controlled by a control unit 30, which has a micro controller 32.
- the microcontroller 32 is arranged on an electronic circuit board 33 on which further electronic components 34 - such as interference suppression elements or power output stages for the motor current - are arranged.
- the control unit 30 is integrated in the actuator 10, for example as plug-in electronics 31 with a plug connection 38. Therefore, the circuit board 33 is also arranged directly in the actuator 10.
- An acceleration sensor 40 is arranged on the printed circuit board 33, which is preferably designed as a MEMS sensor (Micro-Electro-Mechanical System) 42 is. This acceleration sensor 42 directly detects the structure-borne noise of the actuator 10, which is generated by the commutation and the magnetic alternating fields of the electric motor 12.
- the acceleration sensor 40 can therefore preferably be arranged directly on the printed circuit board 33, so that it is connected directly to the microcontroller 32 via conductor tracks 36.
- the acceleration sensor 40 can also detect external accelerations acting on the actuator 10 - or on the component to be adjusted. This signal can be used for the error correction of an anti-trap function 50 which is implemented in the control unit 30.
- the rotational position and / or the rotational speed of the rotor 18 is determined using a position detection device 52, to which the ripple signal of the acceleration sensor 40 is fed. An incremental signal is generated from this, by means of which the position of the component to be adjusted, such as the window pane, can also be determined.
- the anti-pinch function 50 is activated.
- the change in the speed of the rotor 18 is monitored, for example, and the speed and / or the change in speed are compared with a limit value in the event of an unforeseen drop in the speed. If the limit value is exceeded / undershot, the component to be adjusted is then stopped or its movement is reversed in order to release a trapped obstacle such as that.
- the position detection 52 and the anti-jamming function 50 are arranged, for example, in the microcontroller 32 and are described in more detail in FIG. 3.
- the electric motor 12 transmits the drive torque to a subsequent gear 44, which has an output element 46 for the component to be adjusted.
- the gear 44 is designed as a worm gear, in which a worm 48 is arranged on a rotor shaft 47, which meshes with a worm gear 49.
- the gear 44 is net angeord in a gear housing 45, in which an electronics housing 35 is integrated for the circuit board 33.
- the control unit 30 can also be designed as a central control unit, in which the position detection 52 and the pinch protection 50 are preferably arranged for a plurality of actuators 10.
- an acceleration sensor 40 is arranged in each of the actuator 10, for example on a separate sensor board or directly on the electric motor 12, in particular on its brush holder component 28.
- the rotation angle of the rotor 18 is shown for a complete revolution (360 °).
- the periodic signal 63 of the structure-borne noise excitation of the actuator 10 is shown as acceleration, which was preferably detected by means of the MEMS sensor 42 on the printed circuit board 33.
- Ten double ripples 64 are formed over one revolution, which correspond to ten commutator bars 24 of commutator 22. This means that each electric motor 12 has a characteristic periodic ripple in the acceleration signal.
- the maximum amplitude of the acceleration signal is approximately 5 m / s 2, where approximately the same signal curve of the acceleration is generated for each revolution in the control operation of the actuator 10.
- a characteristic signal pattern 68 occurs here, which is due, for example, to manufacturing inaccuracies of the rotor 18. This characteristic signal pattern 68 can be used for the synchronization of the individual revolutions of the rotor 18 if the position detection should fail due to a fault.
- FIG. 2b shows a Fast Fourier Transform (FFT) of the signal curve 63 of FIG. 2a as the frequency spectrum.
- the frequency is plotted on the X axis 70 over a frequency range up to approximately 1500 Hz.
- the amplitude of the structure-borne noise excitation of the acceleration signal is shown again on the Y axis 72.
- the first dominant ripple frequency 74 occurs at approximately 710 Hz, which corresponds to a rotational frequency of the rotor 18 of 71 Hz for ten commutator segments 24.
- Another dominant frequency range 76 occurs at about 1420 Hz as a double ripple frequency. This represents the first harmonic of the ripple frequency 74. Therefore, the signal of the acceleration ripple 63 in FIG.
- the ripple frequency 74 and their First harmonics 76 are caused on the one hand by the current reversal at the commutator 22, but on the other hand also independently of the current by the magnetic vibration excitation of the motor components due to the alternating magnetic fields. Due to the Constantly pronounced ripple of the acceleration signal 63, which corresponds to the ripple frequencies 74, 76, the signal of the acceleration sensor 40 can be used directly for the position detection 52.
- Such an evaluation device 80 for rotational position or speed detection is shown in FIG. 3.
- the acceleration signal 63 of the actuator 10 according to FIG. 2a is fed to a signal filter 82.
- the ripple frequency 74 can be parried from its first harmonic 76, so that exactly one signal ripple occurs for each commutator bar 24.
- This filtered ripple count signal is fed to the ripple detection 83, comparable to a device that evaluates the ripple signal of a motor current according to the SenserLess Control method (SLC).
- SLC SenserLess Control method
- the individual signal ripples added together form an incremental signal that adds up the incremented rotor angle.
- the angle of rotation (rotational position) and thus the adjustment path of the part to be adjusted can be determined directly from this.
- the speed of the rotor 18 can also be determined therefrom.
- the position detection 52 is based on an observer model 88 of the electric motor 12, in the case of the various motor parameters, such as an applied motor voltage 84, the operating temperature or the starting behavior.
- the previously estimated values - for example for the engine speed - are compared with the actually determined values from the acceleration signal 63.
- the stored values of the previous actuating processes are stored and compared with the currently determined values.
- an adaptation 86 of the position detection 52 to changing boundary conditions can be undertaken.
- the anti-trap function 50 the absolute value and / or the change in the values which are characteristic of the adjusting force are continuously monitored.
- a speed change is added up via the adjustment path and compared with a limit value. If the speed drops below a certain limit, this is identified as a trapping event.
- a further signal from the acceleration sensor 40 for the pinch protection can also be evaluated, which measures an acceleration acting externally on the actuator 10 - and thus on the component to be adjusted. If the acceleration sensor 40 detects a negative acceleration of the component to be adjusted, it can be assumed that a mechanical shock tation of the motor vehicle has led to this negative acceleration, which has led to a braking of the movement process of the component - in particular, for example, in particular driving over a transverse groove, a train track or a pothole.
- the influence of the external acceleration in the anti-trap function 50 can preferably be suppressed in the case of a rough road.
- Such an acceleration signal particularly detects accelerations against gravity (for side windows) and / or severe braking of the vehicle (for sunroof).
- the SLC evaluation unit 80 the position, speed and vehicle acceleration are derived from the body noise and the clamping force is inferred. The determined values for the position and / or the speed are checked in a checking unit 90 for plausibility.
- the electric motor 12 can be combined with different gear types 44, such as a worm gear, an eccentric gear, a spur or bevel gear.
- the control unit 30 can be an integral part of the actuator 10, or can be designed as a central control device for a plurality of electric motors 12.
- the acceleration sensor 40 is preferably arranged on an electronic circuit board 33 of the electric motor 12, but can also be attached directly to the electric motor 12 at any point without a circuit board 33.
- the method according to the invention for operating an electric motor 12 can also be used for drives that do not adjust a component, but instead drive a blower or a pump, for example, and whose speed is detected by means of the periodic ripple of the acceleration signal 63.
- the method can also be used for applications outside the motor vehicle.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Direct Current Motors (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018216327.8A DE102018216327A1 (en) | 2018-09-25 | 2018-09-25 | Method for operating an electric drive unit, preferably for adjusting a component in the motor vehicle, and a drive unit for executing the method |
PCT/EP2019/075594 WO2020064667A1 (en) | 2018-09-25 | 2019-09-24 | Method for operating an electric drive unit, preferably for adjusting a component in the motor vehicle, and drive unit for carrying out said method |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3857703A1 true EP3857703A1 (en) | 2021-08-04 |
Family
ID=68084793
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19779419.1A Withdrawn EP3857703A1 (en) | 2018-09-25 | 2019-09-24 | Method for operating an electric drive unit, preferably for adjusting a component in the motor vehicle, and drive unit for carrying out said method |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3857703A1 (en) |
CN (1) | CN113039716A (en) |
DE (1) | DE102018216327A1 (en) |
WO (1) | WO2020064667A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102021129156A1 (en) | 2021-11-09 | 2023-05-11 | Faurecia Autositze Gmbh | automotive seating system |
CN115288552A (en) * | 2022-08-18 | 2022-11-04 | 东软睿驰汽车技术(沈阳)有限公司 | Anti-pinch control method and device for car window and computer readable storage medium |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4322810A1 (en) * | 1993-07-08 | 1995-01-19 | Duerrwaechter E Dr Doduco | Method for controlling the DC motor which is provided for moving a window pane in a motor vehicle |
AT503865B1 (en) * | 2005-05-25 | 2008-06-15 | Wittmann Kunststoffgeraete Gmb | METHOD FOR POSITIVE AND / OR SPEED CONTROL OF A LINEAR DRIVE |
DE202005018412U1 (en) * | 2005-11-18 | 2007-03-29 | Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Coburg | Control system for a motor vehicle's adjusting device has control electronics, a sensor device for detecting mechanical vibrations and a device for analyzing the vibrations |
DE102007017708A1 (en) * | 2007-04-14 | 2008-10-16 | Robert Bosch Gmbh | Electric motor arrangement i.e. compact servo actuator, has oscillation detection unit detecting oscillations of motor unit and outputting signal, where detection unit is arranged in such manner that signal is outputted to control unit |
DE102009000021A1 (en) * | 2009-01-05 | 2010-07-08 | Robert Bosch Gmbh | Actuator of a motor vehicle component and method for operating such an actuator |
DE102010021186A1 (en) * | 2010-05-21 | 2011-11-24 | Michael Sauer | Method for measuring rotation speed of e.g. engine shaft in vehicle, involves detecting oscillation signal of rotary object, and utilizing duration between two time points as measurement for rotation speed of rotary object |
EP2903153B1 (en) * | 2014-01-29 | 2019-03-06 | Siemens Aktiengesellschaft | Vibration and noise analysis of an inverter-supplied electric machine |
DE102015217907A1 (en) * | 2015-09-18 | 2017-03-23 | Robert Bosch Gmbh | Position sensing device |
DE102015226429A1 (en) * | 2015-12-22 | 2017-06-22 | Robert Bosch Gmbh | Sensor device in an electrical machine |
EP3322088A1 (en) * | 2016-11-10 | 2018-05-16 | Siemens Aktiengesellschaft | Method for monitoring the operation of rotary electric machine |
DE102016225403A1 (en) * | 2016-12-19 | 2018-06-21 | Robert Bosch Gmbh | Method and device for determining a position of an actuating element |
-
2018
- 2018-09-25 DE DE102018216327.8A patent/DE102018216327A1/en active Pending
-
2019
- 2019-09-24 WO PCT/EP2019/075594 patent/WO2020064667A1/en unknown
- 2019-09-24 CN CN201980077500.6A patent/CN113039716A/en active Pending
- 2019-09-24 EP EP19779419.1A patent/EP3857703A1/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
WO2020064667A1 (en) | 2020-04-02 |
DE102018216327A1 (en) | 2020-03-26 |
CN113039716A (en) | 2021-06-25 |
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