Patents for H02P 29 - Arrangements for regulating or controlling electric motors, appropriate for both ac- and dc-motors (5,779)
08/2000
08/29/2000US6111384 Method for controlling motor speed
08/23/2000EP1030438A1 Control of switched reluctance machines
08/23/2000CN1264213A Control for switch reluctance motor
08/22/2000US6107767 Electric assist steering system having an improved motor current controller with notch filter
08/22/2000CA2198688C Automatic door controller
08/15/2000US6104159 Field weakening control method in induction motor
08/15/2000US6104156 Device for controlling the stopping of a motorized shrouding product
08/09/2000EP1026818A1 Motor speed controller and gain setting method of the controller
08/08/2000US6100660 Current supply controller for an electric motor
08/02/2000CN1261738A No sensor speed controlling method for high speed motor
07/2000
07/27/2000DE19858697A1 Verfahren und Schaltungsanordnung zur Überwachung des Betriebszustandes einer Last Method and circuit for monitoring the operating state of a load
07/19/2000EP1020985A1 Rotor position detection in switched reluctance machines
07/19/2000CN1260631A Detection for rotor position in magnetic resistance motor for switch
07/18/2000US6091215 Trajectory controller
07/11/2000US6085723 Apparatus and methods for controlling idling speed of an internal combustion engine by reducing torque fluctuations
07/06/2000DE19860110A1 Verfahren zur Überwachung der Drehzahl eines Synchronmotors und Vorrichtung zur Überwachung der Drehzahl eines derartigen Motors A method for monitoring the speed of a synchronous motor and device for monitoring the rotational speed of such a motor
06/2000
06/28/2000EP1014556A1 Control of switched reluctance machines
06/28/2000EP1014555A2 Method for monitoring the speed of a synchronous motor and device for monitoring the speed of such a motor
06/28/2000CN1258129A Control of switching reluctance electric machine
06/21/2000EP1011190A2 Method and circuit for monitoring the operational status of a charge
06/14/2000CN1256489A Method for monitoring motor current optimization disk speed of regulating disk data drive
06/08/2000WO2000032459A1 System for controlling electric motors used for the propulsion of a transport trolley
06/07/2000EP1006523A1 Monitoring and adjusting a motor current in a disk data drive to optimize a disk rotation speed
06/02/2000WO2000010240A3 Temperature dependent regulation of the speed of an electric motor with a microprocessor
05/2000
05/31/2000CN1053069C Control system for magnetic resistance switched electric machine
05/30/2000US6070132 Position detecting apparatus
05/25/2000WO2000029902A2 System for removing spurious signatures in motor current signature analysis
05/23/2000US6066074 Exercise apparatus and method
05/18/2000WO2000028405A1 Magnetically-controllable, active haptic interface system and apparatus
05/18/2000WO2000028334A1 Device and method for generating a partially synthesized signal with very good dynamic quality for the acceleration of a rotor in an electrical drive mechanism
05/11/2000WO2000027019A1 Method and apparatus for protecting pwm cycloconverter
05/11/2000DE19851003A1 Einrichtung und Verfahren zur Gewinnung eines dynamisch hochwertigen, teilweise synthetisierten Signals für die Beschleunigung des Läufers eines Antriebs Apparatus and method for obtaining a high-quality dynamic, partially synthesized signal for the acceleration of the rotor of a drive
05/10/2000CN1252645A Controller for AC motor
05/09/2000US6060850 Electric motor control circuit
05/02/2000US6057661 Method of detecting an abnormal load on a servomotor and controlling the same in such an abnormal condition
05/02/2000US6056782 Synchronous machine simulator and synchronous machine simulation method
05/02/2000US6056384 Failure diagnosing circuit and method
04/2000
04/26/2000EP0916040B1 Electric machine in a driving train, for example of a motor vehicle, and process for driving the same
04/20/2000WO2000022380A1 Rotating head optical transmitter for position measurement system
04/20/2000CA2314882A1 Rotating head optical transmitter for position measurement system
04/13/2000DE19920975A1 Electrical servo steering system drives motor connected to steering system, computes estimate of static friction of steering system and compensates static friction based on estimate
04/12/2000EP0858623A4 Motor controlled surgical system
04/11/2000US6049182 Motor speed control device
04/05/2000CN1051182C Device for controlling speed of rotating DC motor
03/2000
03/30/2000WO2000017998A1 Motor controller
03/29/2000EP0989665A1 Speed control device for brushless motor
03/23/2000WO2000016175A1 Method and apparatus for energising rotation-translation converters
03/22/2000CN1248325A Method and device for idneitfying system parameters stator resistance and rotor resistance of transmitter-free induction machine operated in field-oriented manner
03/22/2000CN1248092A Equipment and method for controlling current limiter of motor
03/21/2000US6040674 Motor driving device, method of adjusting the same, and information storage device
03/21/2000CA2148633C Motor drive with programmable function switches
03/16/2000WO2000014845A1 Drive device and method for moving a vehicle part
03/16/2000DE19840161A1 Antriebsvorrichtung und Verfahren zum Verstellen eines Fahrzeugteils Drive device and method for adjusting a vehicle part
03/15/2000CN1247645A Motor controller
03/15/2000CN1050472C Device for converting resistance value into control signal which depends on resistance value, and electrical appts. comprising such device
03/14/2000US6037734 Motor velocity controlling method employing detection of all side edges of phase signals of an encoder to generate control target values for updating a motor control command
03/01/2000EP0982825A1 Apparatus for regulating the speed of rotation of an electrical motor and apparatus for centrifuging comprising such a device
02/2000
02/29/2000US6031966 Motor speed control device
02/29/2000US6031633 Control method of scanner optical system of original image reading apparatus, motor control device and moving unit driving device of image reading apparatus
02/24/2000WO2000010240A2 Temperature dependent regulation of the speed of an electric motor with a microprocessor
02/23/2000CN1049775C Speed controlling method for rotary dc motor and apparatus thereof
02/22/2000US6028406 Method for commutating a brushless motor and power supply for a brushless motor
02/17/2000DE19836882A1 Electric motor has characteristic field stored as digital values for associating parameter and motor speed values, and microcontroller or microprocessor
02/15/2000US6025684 Servo-motor driving method
02/01/2000US6020707 Servo-motor driving method
02/01/2000US6020706 Method of and apparatus for controlling a servomotor
01/2000
01/26/2000CN1048831C Driving circuit for switched reluctance motor
01/19/2000EP0972140A1 Method and device for controlling systems which have winding for carrying power and winding for drive in electrical machines with magnetic bearing assembly, and an electric drive
01/19/2000CN1241842A Field weakening control method in induction motor
01/18/2000US6016042 Method of detecting the angle of rotation and load torque of a DC motor, and apparatus of detecting the angle of rotation and load torque of a DC motor
01/13/2000WO1999057802A3 Device for regulating rotational speed
01/12/2000EP0971220A2 Device for determining the temperature of the windings in an electrical motor operated by a control circuit
01/06/2000WO2000000966A2 Improved notch filtering as used in a disc drive servo
01/05/2000DE19928758A1 Abnormality detector for energizing controller of phase coil used in electric motor
01/04/2000US6011370 Servo-motor driving method
01/04/2000US6010310 Fan controller for reducing harmonic fluxuations that produces audible sounds
12/1999
12/23/1999WO1999066335A1 Method and system for performance testing of rotating machines
12/23/1999DE19827302A1 Electric motor incorporating a device for speed control
12/23/1999CA2334962A1 Method and system for performance testing of rotating machines
12/22/1999EP0966085A1 Control device for the cut-off of a motorised shading device
12/22/1999EP0965047A1 Method and device for identifying the system parameters stator resistance and rotor resistance of a transmitter-free induction machine operated in a field-oriented manner
12/22/1999EP0964985A1 Propulsion system, especially for a motor vehicle and method for regulating the idling speed of an internal combustion engine
12/22/1999CN1047700C Motor speed controller
12/21/1999US6006008 Motor drive system controlled by a phase accumulator and method therefor
12/16/1999DE19825409A1 Device for detecting coil temperature of electric motor
12/15/1999EP0963593A1 Motor drive
12/09/1999WO1999062666A1 Trajectory controller
12/09/1999DE19924025A1 Excitation control device for each of several phase winding coils of stator of electric motor
12/09/1999CA2334176A1 Trajectory controller
12/08/1999EP0961584A1 Powered surgical instruments and control unit
12/01/1999EP0961119A2 Method for controlling motor speed
11/1999
11/30/1999US5995347 Method and apparatus for multi-function electronic motor protection
11/30/1999US5995314 Index signal generating circuit
11/30/1999US5994868 Motor control device
11/30/1999US5994866 Motor controller and disk drive unit
11/24/1999EP0958646A1 Electric motor with an upstream frequency converter
11/23/1999US5990649 Control device for quick angle adjustment of rearview mirror
11/23/1999US5990645 Mechanical vibration detector and vibration damping controller
11/18/1999DE19835576A1 Control system for permanently excited electric motor e.g. for vehicles
11/17/1999EP0957571A2 Torque amplification for ice breaking in an electric torque
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