Patents for H02P 8 - Arrangements for controlling dynamo-electric motors rotating step by step (4,097)
10/2007
10/31/2007DE102006020058A1 Electrical stepper motor e.g. two-phase-claw pole-stepper motor, operating method for motor vehicle, involves activating determination of blocking condition only after free run of stepper motor for predetermined period is sensed in advance
10/31/2007CN101064491A Power converter control for reducing emi noise by temporally changing the PWM carrier frequency
10/31/2007CN101064483A Device and method for controlling power converting device
10/31/2007CN100346558C Permanent magnetic three phase stepped motor
10/24/2007CN101061625A Stepping motor for generating vibration
10/17/2007CN100344050C Stepping motor with several step angles
10/09/2007US7279858 Drive regenerative control system
10/03/2007CN100341238C Step motor network control apparatus applicable to medical robot
09/2007
09/26/2007CN101043195A Stepping motor control apparatus
09/26/2007CN101042899A Optical disk drive
09/26/2007CN101042898A Optical disk drive
09/26/2007CN100340057C Magnetic motor
09/19/2007EP1835611A1 Stepping motor controlling device
09/12/2007CN101034866A Step motor acceleration system
09/11/2007US7268512 Control device for stepping motor
09/07/2007WO2007071057A8 Position controlled drive mechanism
08/2007
08/30/2007US20070200527 Stepping motor driving device
08/29/2007CN101026355A Apparatus and method for driving a stepping motor and electronic apparatus using the same
08/22/2007CN1333519C Step motor accelerating system
08/16/2007US20070189815 Method,apparatus, and program for driving a motor in a feedback control system, capable of suppressing motor oscillation
08/16/2007US20070188124 Step motor drive circuit and analog electronic timepiece
08/15/2007CN101019079A Analog electronic clock and motor control circuit
08/15/2007CN101017929A Two-dimension automatic positioning control antenna supporter for micro-wave detection
08/15/2007CN101017102A Return-to-zero method of indicating gauge and indicating gauge using same
08/09/2007WO2007089258A1 Stepper motor stall detection
08/09/2007US20070182353 Motor control apparatus
08/07/2007US7253581 Data storage device, motor control device, and motor control method
08/01/2007CN101008136A Electric machine control device and sewing machine with same
07/2007
07/26/2007DE102007002906A1 Mehrkanal-Impulsfolgen-Übertragungsvorrichtung Multichannel pulse trains transmission device
07/24/2007US7248031 Electric circuit and semiconductor device
07/19/2007DE19529164B4 Vorrichtung zum Steuern der von der Beleuchtungseinheit eines Endoskops abgegebenen Lichtmenge Apparatus for controlling the output of the lighting unit of an endoscope light quantity
07/18/2007CN2924926Y Multifunctional step motor driver
07/18/2007CN1327607C Driver and driving method of step-by-step motor
07/17/2007US7245106 Controller of pulse width modulation signal-driven device, and method of reducing noise of the device
07/12/2007WO2007077936A1 Stepping motor drive method and drive device
07/12/2007WO2007077935A1 Vibration generation stepping motor stop control method and stop control device
07/11/2007CN1326319C Driving device for step-by-step motor
07/03/2007US7239108 Method for stepper motor position referencing
06/2007
06/28/2007WO2007071057A1 Position controlled drive mechanism
06/28/2007US20070145937 Braking system for electric step motors
06/28/2007CA2633387A1 Position controlled drive mechanism
06/20/2007EP1798847A2 Electronic commutation circuits
06/20/2007CN2914487Y Stepping motor driver
06/20/2007CN1322666C Wire breakage detector for driver of step motor
06/19/2007US7233255 Indicating instrument
06/14/2007US20070132422 Stepper motor stop and stalling detection method, and stop-detector-equipped stepper motor
05/2007
05/31/2007US20070120517 Skew correction system and method of controlling a skew correction system
05/30/2007CN1319267C Linear step motor position sensing system
05/30/2007CN1319266C Method and apparatus for detecting a stall condition in a stepping motor
05/24/2007WO2007058069A1 Stepping motor for generating vibration
05/24/2007US20070115760 Analog electronic clock
05/23/2007CN1316932C Portable seat lifting device
05/22/2007US7221116 Motor control apparatus
05/16/2007CN1316731C Step motor driving device and method
05/09/2007CN1315126C Device and method for controlling step motor of optical disc driving system
05/02/2007EP1779504A1 Arrangement for driving a load element
05/02/2007CN1313891C Image forming apparatus and method
04/2007
04/25/2007CN1954004A 生物相容性材料 Biocompatible material
04/24/2007US7208905 Driving method, driving mechanism, and image capturing apparatus
04/18/2007CN1311619C Timepiece unit and method for controlling timepiece unit
04/11/2007CN1310418C Controller of step-by-step motor
04/10/2007US7202709 Waveform output device and drive device
04/05/2007US20070075594 Stepping motor control method
04/03/2007US7199546 Motor stop control device utilizable for gaming machine and gaming machine using the same
03/2007
03/29/2007US20070070680 Electric circuit
03/29/2007DE10357969B4 Vorrichtung zum Ansteuern eines Schrittmotors An apparatus for driving a stepping motor
03/28/2007CN1938935A Power transistor protecting circuit of motor drive circuit, motor drive circuit, and semiconductor device
03/28/2007CN1937397A Vehicle electric booster steering system controller
03/28/2007CN1937396A Coutrol device for electric booster steering system
03/28/2007CN1307785C Method for controlling stepping motor
03/27/2007US7197390 Electric vehicle with adaptive cruise control system
03/21/2007EP1764907A1 Redundant electromotoric drive system
03/21/2007EP1764906A1 Controller apparatus for synchronous motor and controlling method thereof
03/21/2007CN2882096Y Flexible positioning device for step-by-step motor
03/20/2007US7193386 Apparatus and method for driving a stepping motor
03/15/2007DE4325042B4 Steuersystem für Verbrennungsmotoren Control system for internal combustion engines
03/14/2007EP1763127A2 System and method of controlling a stepper motor
03/07/2007EP1760875A1 Method and apparatus detecting an operating state of a motor
03/07/2007EP1760098A1 Biocompatible material
03/07/2007CN1926484A System and method for controlling current provided to a stepping motor
03/07/2007CN1303307C Shutter rolling mechanism including step-by-step motor controller for controlling upper and lower limit stop position
03/06/2007US7187147 Motor drive
02/2007
02/28/2007EP1757835A2 Method of setting a clutch torque
02/28/2007CN1920980A Method for driving control main spindle motor without sensing unit in compact disk driver storehouse
02/27/2007US7183731 Pulse generating method and pulse generator, and motor control system using the same
02/14/2007CN1300928C Motor controller
02/07/2007CN2867406Y Needle manipulating clock ship capable of automatic adjusting pulse width
02/07/2007CN1910813A Current limiter circuit and motor drive circuit
02/01/2007US20070024228 Stepping motor drive apparatus and control method thereof
01/2007
01/31/2007CN2865133Y Sine-wave subdivision drive for three-phase mixed stepping motor
01/30/2007US7171578 Pulse output function for programmable logic controller with linear frequency change
01/30/2007US7170254 Stepper motor driving apparatus
01/30/2007US7168677 Motor-operated valve apparatus
01/25/2007WO2007011454A2 Agc circuit for the reduction of harmonics in the drive signal
01/24/2007CN2862497Y Computer automatic controlled incense coiling machine
01/24/2007CN1297068C Micro electromechanical system based unidirectional stepping reverse self-locking electromagnetic driver
01/17/2007CN1898857A Overcurrent protection circuit, motor drive circuit, and semiconductor device
01/10/2007EP1741011A1 System and method for controlling current provided to a stepping motor
01/04/2007US20070001642 Stepping motor controller, printer, stepping motor control method and stepping motor control program product
01/03/2007CN1889356A Method for utilizing capacitor to drive motor used as step operation
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