WO2012136182A2 - Procédé de commande d'un moteur électrique à commutation électronique - Google Patents

Procédé de commande d'un moteur électrique à commutation électronique Download PDF

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Publication number
WO2012136182A2
WO2012136182A2 PCT/DE2012/000267 DE2012000267W WO2012136182A2 WO 2012136182 A2 WO2012136182 A2 WO 2012136182A2 DE 2012000267 W DE2012000267 W DE 2012000267W WO 2012136182 A2 WO2012136182 A2 WO 2012136182A2
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
electric motor
position sensor
rotor position
phases
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/DE2012/000267
Other languages
German (de)
English (en)
Other versions
WO2012136182A3 (fr
Inventor
Martin Rapp
Martin Zimmermann
Matthias Gramann
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.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler Technologies AG and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schaeffler Technologies AG and Co KG filed Critical Schaeffler Technologies AG and Co KG
Priority to CN201280017426.7A priority Critical patent/CN103493358B/zh
Priority to DE112012001584.3T priority patent/DE112012001584A5/de
Publication of WO2012136182A2 publication Critical patent/WO2012136182A2/fr
Publication of WO2012136182A3 publication Critical patent/WO2012136182A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P2203/00—Indexing scheme relating to controlling arrangements characterised by the means for detecting the position of the rotor
    • H02P2203/03—Determination of the rotor position, e.g. initial rotor position, during standstill or low speed operation

Definitions

  • the invention relates to a method for controlling an electronically commutated
  • Rotary movement of an electric motor in a linear motion In order to reduce installation space of electric motors and to enable special control of the rotor, brushless DC motors are used, which allow electronic commutation.
  • the commutation of several pole pairs is carried out depending on the rotor position as rotation angle relative to the stator of the electric motor by means of a rotor position sensor which determines the rotational angle of the rotor relative to the stator and transmits to the electronics for controlling the commutation.
  • German Patent Application DE 10 2010 026 543.8 discloses an electronically commutated electric motor in which the rotational movement of the rotor is determined by means of an absolutely measuring rotor position sensor.
  • an angle offset between a position actually measured by the rotor position sensor and an assumed position of the rotor is ascertained at the end of the tape production of the drive system and compensated by the electronics for commutation of the electric motor.
  • the phases of the electric motor are supplied with current differently over time, so that a plurality of rotation angles of the rotor corresponding to the energization are established, wherein the actual rotor position is determined on the basis of the rotor position sensor.
  • CONFIRMATION COPY their design closed or opened as a forcibly closed or opened friction clutch.
  • the achievement of an operation of both types of friction clutches can lead to a safety-critical state.
  • the object of the invention is therefore to propose a method for controlling an electronically commutated electric motor, in which a plausibility of the assignment of the rotor position sensor determined rotor position relative to an actual position of the rotor in an operating condition of the motor vehicle is made possible without driving effect of the electric motor.
  • the object is achieved by a method for controlling an electronically commutated
  • the method with a three-phase electric motor it is possible, for example, to energize one phase with a predetermined current in a first flow direction and the other two phases with currents reduced in the reverse direction relative to this.
  • the pole pairs align themselves with the magnetic field generated by the high current phase and are stabilized by the oppositely directed magnetic fields generated by the currents of the other two phases.
  • the rotor rotates rend the proposed energization by a maximum of 12 ° to 3 ° and is aligned to approximately ⁇ exactly in the resulting magnetic field.
  • the evaluation of a deviation between actual and test position is based on a
  • the comparison can be done, for example, by difference or quotient formation and can contain an amount formation. Depending on the comparison, a corresponding limit value is specified. In the normal case, the formed comparison falls below the limit value and no further measures are taken. If the limit value is exceeded, a multilevel confidence measure of the actual position or of the factory-compensated angular offset can be downgraded. Depending on the extent of the exceeded limit value and a correspondingly graduated confidence level, slight deteriorations in the efficiency of the commutation can be tolerated, a check and / or readjustment can be initiated immediately, for example, by issuing a corresponding driver warning and / or an entry in a fault memory or at the next workshop visit.
  • shut down in a drive train with dual-clutch transmission and two friction clutches each with a hydraulic actuation system of the two actuation systems as a result of a degraded confidence measure would be operated as a result of this decommissioning the motor vehicle only with the partial transmission with the functional actuation system.
  • the plausibility of the actual position takes place in an advantageous manner in an operating state in which the drive system is not active or is not activated in the time of plausibility. For example, this may be at the beginning of an operation of the motor vehicle when For example, an ignition key or start switch the ignition-on position switched, a vehicle door open, a seat sensor activated on the driver's seat or the like is carried out takes place.
  • the drive system is substantially load-free during the plausibility check in order not to prevent the rotor from aligning when the corresponding phase currents are applied.
  • the drive system can be transferred before the end of the operation in a predetermined load-free state.
  • a hydraulic circuit can be transferred to a pressureless state and, at the beginning of operation, the non-pressurized operation be maintained at least during the plausibility check.
  • the non-pressurized operation is preferably set by starting a sniffer position, in which a pressure equalization of the hydraulic path is given with a pressure equalization tank.
  • Figure 1 is a block diagram of a drive system in the form of a hydraulic actuating system for a friction clutch
  • Figure 2 is a schematic diagram of a commutation of an electric motor during the
  • the drive system 1 is shown in the form of the hydraulic actuation system 1a for a friction clutch 7, as provided, for example, in duplicate for each one friction clutch of a dual clutch transmission with two partial transmissions in a drive train of a motor vehicle.
  • the actuating system 1a includes a housing 2, in which a pressure piston 3 of the rotor 10 of the electronically commutated electric motor 4 with the interposition of a transmission 9 for converting the rotational movement of Rotor 10 is axially displaced in an axial movement, for example, a Planetenskylzgetriebes.
  • the electronically commutated electric motor 4 is controlled by the control unit 5, wherein this already contains the electronics 12 as suburb electronics for its commutation due to the rotation angle supplied by the absolute rotor position sensor 11 in the embodiment shown and the control unit controls only the position control of the pressure piston 3.
  • the slave cylinder 13 is acted upon by the pressure generated by the pressure piston 3 during its axial displacement in the housing, the piston actuates the pressure plate of the friction clutch 7.
  • the friction clutch 7 is opened or preferably closed under pressure build-up by the pressure piston 3. In the retracted position of the pressure piston 3 of this releases the sniffer opening 8, so that a pressure equalization between the pressure chamber formed by the housing 2 and the pressure piston 3 and the pressure line 6 and the slave cylinder 13 and a pressure equalization tank, not shown.
  • the electronically commutated electric motor has three coil bodies acted upon by a current in three phases supplying power electronics, which are energized successively by the phases, so that an alternating magnetic field is commutated, which repels the pole pairs on the rotor 10 and thus forces a rotation of the rotor 10.
  • an assumed, determined by the phase position position of the rotor 10 is detected with an actual, determined by the rotor position sensor 11 actual position factory and compensates for any existing angular offset of the on-site electronics factory.
  • the actual position is plausible, for example, when maladjusted magnet of one or more pole pairs bad efficiencies of commutation or in extreme cases, a rotation of the rotor 10 of the electric motor 4 in to avoid the wrong direction.
  • FIG. 2 shows a schematic representation of a plausibility check of the illustrated actual position with a stationary electric motor on the basis of a pole pair 14.
  • the phases U, V, W are simultaneously applied to the stationary current coils in the stator, so that a stationary näres magnetic field in the direction of the pointer l_Res adjusts, at which the pole pair 14 aligns and thereby positions the rotor exactly to the predetermined actual position.
  • This actual position is compared with a test position, which is detected by the rotor position sensor. Taking into account any angular offset already determined at the factory, the actual position and the test position are compared with each other and checked for exceeding of a limit value.
  • phase U can be applied to the bobbins as a negative current in the range of the maximum current or nominal current (-100%) and the phases V, W as proportional positive currents (+50%).
  • the simultaneous energization of the phases U, V, W over a predetermined time interval can be maintained, for example, less than 100 ms, preferably in the range of 20 ms. Within this time interval, a sufficient alignment of the rotor can be achieved and a determination of the test position is possible, so that the plausibility check does not cause any noticeable time delay for the driver when starting the motor vehicle.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Hybrid Electric Vehicles (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

L'invention concerne un procédé de commande d'un moteur électrique à commutation électronique, présentant plusieurs phases, dans un système d'entraînement d'un véhicule à moteur, notamment dans un système d'actionnement hydraulique d'un embrayage à friction, et comportant un rotor, doté d'un capteur de position mesurant en valeur absolue et surveillant l'angle de rotation du rotor, ainsi qu'un système électronique pour commuter le moteur électrique sur la base des données captées par le capteur de position du rotor concernant l'angle de rotation. L'invention vise à maintenir constant sur la durée de vie le rendement d'un système d'entraînement et à éliminer des états de fonctionnement critiques en termes de sécurité. A cet effet, sur la durée de vie du moteur électrique, un contrôle de plausibilité est régulièrement effectué par réglage d'une position réelle prédéfinie de la position du rotor lorsque celui-ci n'est pas en cours d'entraînement et par comparaison de cette position avec une position de contrôle instantanément déterminée par le capteur de position du rotor relativement à une valeur limite prédéfinie, les phases du moteur électrique étant alimentées simultanément en courant durant un intervalle de temps prédéfini et la position réelle que prend le rotor étant déterminée au moyen du capteur de position du rotor et comparée avec la position de contrôle déterminée par le capteur de position du rotor.
PCT/DE2012/000267 2011-04-07 2012-03-16 Procédé de commande d'un moteur électrique à commutation électronique Ceased WO2012136182A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201280017426.7A CN103493358B (zh) 2011-04-07 2012-03-16 用于控制电子整流电动机的方法
DE112012001584.3T DE112012001584A5 (de) 2011-04-07 2012-03-16 Verfahren zur Steuerung eines elektronisch kommutierten Elektromotors

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011016573 2011-04-07
DE102011016573.8 2011-04-07

Publications (2)

Publication Number Publication Date
WO2012136182A2 true WO2012136182A2 (fr) 2012-10-11
WO2012136182A3 WO2012136182A3 (fr) 2013-06-20

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2012/000267 Ceased WO2012136182A2 (fr) 2011-04-07 2012-03-16 Procédé de commande d'un moteur électrique à commutation électronique

Country Status (3)

Country Link
CN (1) CN103493358B (fr)
DE (2) DE102012204147A1 (fr)
WO (1) WO2012136182A2 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013203388B3 (de) 2013-02-28 2014-03-20 Schaeffler Technologies AG & Co. KG Rotorlagegeber für eine elektronisch kommutierte elektrische Maschine mit einem Referenzgeber
DE102016203155A1 (de) * 2016-02-29 2017-08-31 Bayerische Motoren Werke Aktiengesellschaft Überwachung und Abgleich des Winkels eines Rotors bei einer elektrischen Maschine mit einem Winkelsensor
DE102016214497A1 (de) 2016-08-05 2018-02-08 Schaeffler Technologies AG & Co. KG Steuerungseinheit und Verfahren zum Steuern einer elektrischen Maschine
DE102017127584A1 (de) 2017-11-22 2018-05-17 Schaeffler Technologies AG & Co. KG Steuerungseinheit und Verfahren zum Bestimmen eines Offsets eines Rotorlagegebers einer mehrphasigen elektrischen Maschine
GB201806202D0 (en) 2018-04-16 2018-05-30 Trw Ltd A method of determining an angular offset of a position sensor

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4237983C2 (de) * 1992-11-11 1998-04-23 Mannesmann Sachs Ag Anordnung zur automatischen Steuerung einer von einem Stellantrieb betätigbaren Reibungskupplung
WO2001063136A1 (fr) * 2000-02-24 2001-08-30 Siemens Aktiengesellschaft Embrayage automatique pour vehicule automobile, et procede de commande d'un embrayage de vehicule automobile
JP3789895B2 (ja) * 2003-02-28 2006-06-28 三菱電機株式会社 巻線界磁型同期モータの制御装置および巻線界磁型同期モータの回転位置ずれ補正方法
JP4708992B2 (ja) * 2005-12-12 2011-06-22 日立オートモティブシステムズ株式会社 位置検出装置及びこれを用いた同期モータ駆動装置
DE102008006983A1 (de) * 2008-01-31 2009-08-13 Siemens Aktiengesellschaft Verfahren zur Ermittlung eines Korrekturwertes für die Winkellage des Rotors eines elektrisch kommutierten reversierbaren Synchron-Motors
DE102008001408A1 (de) * 2008-04-28 2009-10-29 Robert Bosch Gmbh Offsetwinkelbestimmung bei Synchronmaschinen
US8185342B2 (en) * 2009-08-14 2012-05-22 GM Global Technology Operations LLC Estimating rotor angular position and velocity and verifying accuracy of position sensor outputs
DE112011104077A5 (de) 2010-07-08 2013-09-05 Schaeffler Technologies AG & Co. KG Verfahren zum Abgleich eines Phasenversatzes zwischen einem Rotorlagesensor und der Rotorlage eines elektrisch kommutierten Motors

Also Published As

Publication number Publication date
DE112012001584A5 (de) 2014-01-23
WO2012136182A3 (fr) 2013-06-20
CN103493358B (zh) 2016-09-28
DE102012204147A1 (de) 2012-10-11
CN103493358A (zh) 2014-01-01

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