IL118520A - System and method for controlling brushless permanent magnet motors - Google Patents

System and method for controlling brushless permanent magnet motors

Info

Publication number
IL118520A
IL118520A IL11852096A IL11852096A IL118520A IL 118520 A IL118520 A IL 118520A IL 11852096 A IL11852096 A IL 11852096A IL 11852096 A IL11852096 A IL 11852096A IL 118520 A IL118520 A IL 118520A
Authority
IL
Israel
Prior art keywords
permanent magnet
magnet motors
brushless permanent
controlling brushless
controlling
Prior art date
Application number
IL11852096A
Other languages
English (en)
Other versions
IL118520A0 (en
Original Assignee
Kollmorgen Corp
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 Kollmorgen Corp filed Critical Kollmorgen Corp
Publication of IL118520A0 publication Critical patent/IL118520A0/xx
Publication of IL118520A publication Critical patent/IL118520A/xx

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
    • H02P6/06—Arrangements for speed regulation of a single motor wherein the motor speed is measured and compared with a given physical value so as to adjust the motor speed
    • 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
    • H02P6/15—Controlling commutation time

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Control Of Electric Motors In General (AREA)
IL11852096A 1995-06-05 1996-05-31 System and method for controlling brushless permanent magnet motors IL118520A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US46126595A 1995-06-05 1995-06-05
US64538096A 1996-05-13 1996-05-13

Publications (2)

Publication Number Publication Date
IL118520A0 IL118520A0 (en) 1997-01-10
IL118520A true IL118520A (en) 2000-08-13

Family

ID=27039960

Family Applications (1)

Application Number Title Priority Date Filing Date
IL11852096A IL118520A (en) 1995-06-05 1996-05-31 System and method for controlling brushless permanent magnet motors

Country Status (6)

Country Link
US (1) US6002234A (xx)
EP (1) EP0748038B1 (xx)
JP (1) JP3686474B2 (xx)
DE (1) DE69623076T2 (xx)
GB (1) GB2301904B (xx)
IL (1) IL118520A (xx)

Families Citing this family (122)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2858692B2 (ja) * 1996-12-05 1999-02-17 株式会社安川電機 永久磁石型同期電動機のセンサレス制御方法及び装置
US6128436A (en) * 1998-08-03 2000-10-03 Visteon Global Technologies, Inc. Speed monitoring and control for a brushless motor
SE513764C2 (sv) * 1998-10-16 2000-10-30 Atlas Copco Controls Ab Metod för återstartning av en synkronmotor av permanentmagnettyp under restrotation
WO2001020342A2 (en) 1999-09-16 2001-03-22 Delphi Technologies, Inc. Tachometer apparatus and method for motor velocity measurement
WO2001020761A1 (en) 1999-09-17 2001-03-22 Delphi Technologies, Inc. Method and system for controlling torque in permanent magnet brushless electric motors
JP3749645B2 (ja) * 1999-12-27 2006-03-01 株式会社ケーヒン 携帯用発電機
DE60140356D1 (de) 2000-04-07 2009-12-17 Delphi Tech Inc Dämpfung von spannungsgesteuerten bürstenlosen motoren für elektrische servolenkungen
US6301136B1 (en) * 2000-07-19 2001-10-09 Honeywell International Inc. Floating flame controller
US6498451B1 (en) 2000-09-06 2002-12-24 Delphi Technologies, Inc. Torque ripple free electric power steering
WO2002020332A1 (en) * 2000-09-07 2002-03-14 Delphi Technologies, Inc. Method and apparatus for torque control of a machine
US6566829B1 (en) * 2000-09-07 2003-05-20 Delphi Technologies, Inc. Method and apparatus for torque control of a machine
DE10063054A1 (de) * 2000-12-18 2002-06-20 Wilo Gmbh Sensorloses Ansteuerverfahren
JP4590755B2 (ja) * 2001-03-01 2010-12-01 富士電機システムズ株式会社 同期電動機の制御装置
JP3781653B2 (ja) * 2001-03-12 2006-05-31 株式会社ジェイテクト 電動パワーステアリング装置
US6504329B2 (en) * 2001-04-09 2003-01-07 General Motors Corporation Apparatus and method for controlling permanent magnet electric machines
US20030061464A1 (en) * 2001-06-01 2003-03-27 Catherwood Michael I. Digital signal controller instruction set and architecture
US6937084B2 (en) * 2001-06-01 2005-08-30 Microchip Technology Incorporated Processor with dual-deadtime pulse width modulation generator
US20020184566A1 (en) 2001-06-01 2002-12-05 Michael Catherwood Register pointer trap
JP4009589B2 (ja) 2001-06-08 2007-11-14 デルファイ・テクノロジーズ・インコーポレーテッド 電気パワーステアリングシステムのための速度補償制御
US7075290B2 (en) 2001-07-27 2006-07-11 Delphi Technologies, Inc. Tachometer apparatus and method for motor velocity measurement
FI112790B (fi) * 2001-08-01 2004-01-15 Kone Corp Menetelmä kestomagneettimoottorin nopeustakaisinkytkennän korjaamiseksi
US6747431B1 (en) 2001-08-16 2004-06-08 Lexmark International, Inc. Calibration technique for electric motor
US6900607B2 (en) 2001-08-17 2005-05-31 Delphi Technologies, Inc. Combined feedforward and feedback parameter estimation for electric machines
US7199549B2 (en) 2001-08-17 2007-04-03 Delphi Technologies, Inc Feedback parameter estimation for electric machines
US7071649B2 (en) 2001-08-17 2006-07-04 Delphi Technologies, Inc. Active temperature estimation for electric machines
JP3501370B2 (ja) * 2001-09-04 2004-03-02 株式会社デンソー 同期モータの制御方法および制御装置
US7576506B2 (en) 2001-12-11 2009-08-18 Delphi Technologies, Inc. Feedforward parameter estimation for electric machines
DE10212751A1 (de) * 2002-03-22 2003-10-02 Bosch Gmbh Robert Verfahren und Vorrichtung zur Ermittlung der Rotortemperatur bei einer PM-Synchronmaschine
JP3741071B2 (ja) * 2002-03-29 2006-02-01 ブラザー工業株式会社 給紙装置
US6756757B2 (en) * 2002-05-21 2004-06-29 Emerson Electric Company Control system and method for a rotating electromagnetic machine
US6940242B1 (en) * 2003-01-29 2005-09-06 Wavecrest Laboratories, Llc Motor control system for dynamically changing motor energization current waveform profiles
US6727668B1 (en) * 2002-06-19 2004-04-27 Wavecrest Laboratories, Llc Precision brushless motor control utilizing independent phase parameters
US6919700B2 (en) * 2003-01-29 2005-07-19 Wavecrest Laboratories, Llc Adaptive control of motor stator current waveform profiles
US20040021437A1 (en) * 2002-07-31 2004-02-05 Maslov Boris A. Adaptive electric motors and generators providing improved performance and efficiency
US6794839B1 (en) * 2002-11-08 2004-09-21 Wavecrest Laboratories, Llc Precision motor control with selective current waveform profiles in separate stator core segments
DE10327532A1 (de) * 2002-06-20 2004-01-29 Hitachi Unisia Automotive, Ltd., Atsugi Steuersystem für bürstenlosen Motor
US20040007997A1 (en) * 2002-07-11 2004-01-15 Visteon Global Technologies, Inc. Vector control system for permanent magnet sychronous machines using parameter scheduling table
US20050046375A1 (en) * 2002-07-31 2005-03-03 Maslov Boris A. Software-based adaptive control system for electric motors and generators
US20050045392A1 (en) * 2002-07-31 2005-03-03 Maslov Boris A. In-wheel electric motors
GB0220401D0 (en) * 2002-09-03 2002-10-09 Trw Ltd Motor drive control
US7157878B2 (en) 2002-11-19 2007-01-02 Delphi Technologies, Inc. Transient compensation voltage estimation for feedforward sinusoidal brushless motor control
US6756753B1 (en) 2002-12-11 2004-06-29 Emerson Electric Co. Sensorless control system and method for a permanent magnet rotating machine
US6831429B2 (en) 2003-03-10 2004-12-14 Visteon Global Technologies, Inc. Prediction of available torque and power from battery-powered traction motor
US7197390B2 (en) * 2003-03-13 2007-03-27 Wavecrest Laboratories Llc Electric vehicle with adaptive cruise control system
US20040189228A1 (en) * 2003-03-28 2004-09-30 Gregory Katch Vehicle speed dependent compensator for electric steering systems
US6911794B2 (en) * 2003-05-08 2005-06-28 Wavecrest Laboratories, Llc Precision adaptive motor control in cruise control system having various motor control schemes
WO2005027322A2 (de) * 2003-09-15 2005-03-24 Siemens Aktiengesellschaft Verfahren und regelung einer elektrischen maschine bzw. vorrichtung zu deren regelung
US6859008B1 (en) * 2003-09-17 2005-02-22 Rockwell Automation Technologies, Inc. Method and apparatus for compensating for cable charging effects on control algorithms
US7135830B2 (en) * 2003-09-30 2006-11-14 Reliance Electric Technologies, Llc System and method for identifying operational parameters of a motor
US7184902B2 (en) * 2003-09-30 2007-02-27 Reliance Electric Technologies, Llc Motor parameter estimation method and apparatus
DE10357501A1 (de) * 2003-12-09 2005-07-21 BSH Bosch und Siemens Hausgeräte GmbH Ansteuerung eines bürstenlosen Gleichstrommotors
JP2005192286A (ja) * 2003-12-24 2005-07-14 Aisin Seiki Co Ltd 直流モータの駆動制御装置
TWI227331B (en) * 2003-12-26 2005-02-01 Ind Tech Res Inst Measuring method of induced electromotive force constant of motor
GB2410847A (en) 2004-02-05 2005-08-10 Dyson Ltd Control of motor winding energisation according to rotor angle
US7053587B2 (en) * 2004-02-10 2006-05-30 Denso Corporation Apparatus for controlling three-phase AC motor on two-phase modulation technique
US7002311B2 (en) * 2004-03-18 2006-02-21 Minebea Co., Ltd. Motor speed sensor advancement emulation and compensation
JPWO2005112230A1 (ja) 2004-05-18 2008-05-15 セイコーエプソン株式会社 電動機
DE102004039044A1 (de) * 2004-08-11 2006-02-23 OCé PRINTING SYSTEMS GMBH Anordnung zum Antrieb eines Lastelementes
CN100418298C (zh) * 2005-03-23 2008-09-10 比亚迪股份有限公司 一种永磁同步电机转子位置传感方法和位置传感装置
US7106020B1 (en) 2005-08-30 2006-09-12 Honeywell International Inc. Method of operating a brushless DC motor
US7265512B2 (en) 2005-08-30 2007-09-04 Honeywell International Inc. Actuator with feedback for end stop positioning
JP2007097363A (ja) * 2005-09-30 2007-04-12 Jtekt Corp 油圧用ブラシレスモータの制御方法および制御装置
GB0520178D0 (en) * 2005-10-04 2005-11-09 Switched Reluctance Drives Ltd Rotor position detection in an electrical machine
US7557530B2 (en) * 2005-10-12 2009-07-07 Continental Automotive Systems Us, Inc. Method, apparatus and article for detecting rotor position
KR100648464B1 (ko) * 2005-10-13 2006-11-27 삼성전기주식회사 기어박스를 가지는 브러시리스 직류모터의 제어장치 및제어방법
JP2007159353A (ja) * 2005-12-08 2007-06-21 Mitsubishi Electric Corp 界磁巻線式同期発電電動機
FR2896639B1 (fr) * 2006-01-20 2008-02-22 Valeo Equip Electr Moteur Dispositif de pilotage d'une machine tournante polyphasee
FR2896638B1 (fr) * 2006-01-20 2008-02-22 Valeo Equip Electr Moteur Dispositif de pilotage d'une machine tournante polyphasee
KR100806099B1 (ko) * 2006-04-14 2008-02-21 엘지전자 주식회사 리니어 압축기의 운전제어장치 및 방법
US7339334B2 (en) * 2006-04-19 2008-03-04 Padauk Technology Co., Ltd. Real-time responsive motor control system
US7821217B2 (en) * 2006-05-22 2010-10-26 Black & Decker Inc. Electronically commutated motor and control system employing phase angle control of phase current
US7586279B2 (en) 2006-11-09 2009-09-08 Honeywell International Inc. Actuator position switch
US7725227B2 (en) 2006-12-15 2010-05-25 Gm Global Technology Operations, Inc. Method, system, and apparatus for providing enhanced steering pull compensation
US7835630B2 (en) * 2007-04-06 2010-11-16 The Johns Hopkins University Adaptive and reconfigurable system for DC motor control
JP4559464B2 (ja) * 2007-11-21 2010-10-06 本田技研工業株式会社 電動ステアリング装置
JP5410690B2 (ja) * 2008-04-24 2014-02-05 アスモ株式会社 ブラシレスモータ制御装置及びブラシレスモータ
TWI404324B (zh) * 2008-05-15 2013-08-01 Delta Electronics Inc 馬達控制裝置及其控制方法
JP5148394B2 (ja) * 2008-07-11 2013-02-20 株式会社東芝 マイクロコンピュータ，モータ制御システム
EP2151918A1 (en) * 2008-08-07 2010-02-10 Bombardier Transportation GmbH Operating a synchronous motor having a permanent magnet rotor
JP5332659B2 (ja) * 2008-09-02 2013-11-06 セイコーエプソン株式会社 電動機を駆動するための装置
US8084982B2 (en) 2008-11-18 2011-12-27 Honeywell International Inc. HVAC actuator with output torque compensation
US8084980B2 (en) 2009-01-30 2011-12-27 Honeywell International Inc. HVAC actuator with internal heating
WO2010104059A1 (ja) * 2009-03-09 2010-09-16 日本電気株式会社 ３相モータ制御装置、３相モータシステム、３相モータ制御方法及びプログラム
GB2469129B (en) 2009-04-04 2013-12-11 Dyson Technology Ltd Current controller for an electric machine
GB2469131B (en) 2009-04-04 2014-04-23 Dyson Technology Ltd Control of an electric machine
GB2469135B (en) 2009-04-04 2013-11-06 Dyson Technology Ltd Power tuning an electric system
GB2469137B (en) 2009-04-04 2014-06-04 Dyson Technology Ltd Control of an electric machine
GB2469126B (en) 2009-04-04 2013-11-06 Dyson Technology Ltd Control of an electric machine
GB2469132B (en) 2009-04-04 2014-01-29 Dyson Technology Ltd Control of an electric machine
GB2469140B (en) 2009-04-04 2013-12-11 Dyson Technology Ltd Control of an electric machine
GB2469143B (en) 2009-04-04 2014-03-12 Dyson Technology Ltd Control of a permanent-magnet machine
GB2469144B (en) 2009-04-04 2014-11-05 Dyson Technology Ltd Control of an electric machine
GB2469138B (en) 2009-04-04 2014-04-30 Dyson Technology Ltd Constant-power electric system
GB2469142B (en) 2009-04-04 2014-04-23 Dyson Technology Ltd High-speed electric system
AU2011232432B2 (en) * 2010-03-23 2015-12-24 Pelco Inc. Voltage-controlled stepper motor driver
CN103597712B (zh) * 2011-01-11 2018-09-18 Qm 电力公司 磁隔离相内部永磁铁旋转电机
US8410737B2 (en) * 2011-02-28 2013-04-02 Deere & Company Device and method for generating an initial controller lookup table for an IPM machine
ITBO20110340A1 (it) * 2011-06-13 2012-12-14 Spal Automotive Srl Azionamento elettrico
JP2013023176A (ja) * 2011-07-26 2013-02-04 Mitsuba Corp モータ制御装置
WO2013025552A1 (en) 2011-08-12 2013-02-21 Aerovironment, Inc. Bi-stable, sub-commutated, direct-drive, sinusoidal motor controller for precision position control
US8773056B2 (en) * 2012-06-11 2014-07-08 Caterpillar Inc. FPDA closed loop electric drives controls
JP5984053B2 (ja) * 2012-07-18 2016-09-06 パナソニックＩｐマネジメント株式会社 除毛器具、及び除毛器具の駆動方法
TWI525254B (zh) * 2012-11-19 2016-03-11 財團法人工業技術研究院 一種防止失速控制的真空設備
US9663139B2 (en) * 2013-02-26 2017-05-30 Steering Solutions Ip Holding Corporation Electric motor feedforward control utilizing dynamic motor model
US9106172B2 (en) 2013-06-28 2015-08-11 Horiba Instruments Incorporated Electric machine temperature control
CN103475282B (zh) * 2013-08-30 2016-05-25 中山大洋电机制造有限公司 一种应用单个霍尔传感器的三相直流无刷电机的控制方法
US10389289B2 (en) 2014-02-06 2019-08-20 Steering Solutions Ip Holding Corporation Generating motor control reference signal with control voltage budget
US10003285B2 (en) 2014-06-23 2018-06-19 Steering Solutions Ip Holding Corporation Decoupling current control utilizing direct plant modification in electric power steering system
CN104092413B (zh) * 2014-06-30 2017-03-22 英特格灵芯片(天津)有限公司 无刷电机相位超前角优化的方法、装置和控制***
US9809247B2 (en) 2015-01-30 2017-11-07 Steering Solutions Ip Holding Corporation Motor control current sensor loss of assist mitigation for electric power steering
RU2651812C2 (ru) * 2015-07-16 2018-04-24 Федеральное государственное бюджетное образовательное учреждение высшего образования "Тульский государственный университет" (ТулГУ) Способ управления вентильным двигателем и следящая система для его осуществления
CN108702077B (zh) * 2016-02-10 2020-03-31 株式会社电装 无刷电机
US10069448B2 (en) 2016-06-10 2018-09-04 Denso International America, Inc. HVAC actuator
US9870002B1 (en) 2016-09-06 2018-01-16 X Development Llc Velocity control of position-controlled motor controllers
US10135368B2 (en) 2016-10-01 2018-11-20 Steering Solutions Ip Holding Corporation Torque ripple cancellation algorithm involving supply voltage limit constraint
KR102561919B1 (ko) * 2016-10-07 2023-08-01 에이치엘만도 주식회사 교류전동기의 회전자 위치보정 방법 및 그 장치
CN106501718B (zh) * 2016-10-31 2019-03-29 北京新能源汽车股份有限公司 一种电机标定***、调节方法及标定计算方法
US10153716B2 (en) * 2017-04-24 2018-12-11 Ixys, Llc Compensation for asymmetries in electrodynamics of BLDC type machines using hall sensors
RU2658678C1 (ru) * 2017-05-25 2018-06-22 Зао "Нии Механотроники-Альфа-Нц" Бесконтактный электропривод постоянного тока
RU2671545C1 (ru) * 2017-11-28 2018-11-01 Федеральное государственное бюджетное образовательное учреждение высшего образования "Волжский государственный университет водного транспорта" (ФГБОУ ВО ВГУВТ) Цифровое пятиканальное реле с функцией самодиагностики
CN111381187B (zh) * 2018-12-11 2021-07-09 株洲中车时代电气股份有限公司 一种电机断线的检测方法、***及装置
JP7290434B2 (ja) * 2019-03-19 2023-06-13 ミネベアミツミ株式会社 モータ駆動制御装置及びモータの駆動制御方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4447771A (en) * 1981-08-31 1984-05-08 Kollmorgen Technologies Corporation Control system for synchronous brushless motors
US4546293A (en) * 1982-08-24 1985-10-08 Sundstrand Corporation Motor control for a brushless DC motor
US4490661A (en) * 1983-07-28 1984-12-25 Kollmorgen Technologies Corporation Control system for synchronous brushless motors utilizing torque angle control
US4651068A (en) * 1984-10-01 1987-03-17 Electro-Craft Corporation Brushless motor control circuitry with optimum current vector control
US4649331A (en) * 1985-05-13 1987-03-10 General Electric Company Flux-weakening regime operation of an interior permanent magnet synchronous motor
US4814677A (en) * 1987-12-14 1989-03-21 General Electric Company Field orientation control of a permanent magnet motor
JPH02219498A (ja) * 1989-02-16 1990-09-03 Toyota Central Res & Dev Lab Inc インバータの電流制御装置
JPH0798414B2 (ja) * 1989-07-18 1995-10-25 キヤノン株式会社 記録装置
JP3066622B2 (ja) * 1992-08-04 2000-07-17 本田技研工業株式会社 電気自動車用同期モータ制御装置
CA2129761A1 (en) * 1993-08-11 1995-02-12 David G. Taylor Self-tuning tracking controller for permanent-magnet synchronous motors

Also Published As

Publication number Publication date
GB2301904A (en) 1996-12-18
GB9610840D0 (en) 1996-07-31
US6002234A (en) 1999-12-14
EP0748038A2 (en) 1996-12-11
EP0748038A3 (en) 1998-04-22
GB2301904B (en) 1999-12-08
DE69623076T2 (de) 2003-04-17
EP0748038B1 (en) 2002-08-21
IL118520A0 (en) 1997-01-10
JP3686474B2 (ja) 2005-08-24
DE69623076D1 (de) 2002-09-26
JPH09103089A (ja) 1997-04-15

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