| Patents for H02P 8 - Arrangements for controlling dynamo-electric motors rotating step by step (4,097) |
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| 11/27/2001 | US6323574 Polyphase motor and polyphase motor system for driving the same |
| 11/22/2001 | DE10023138A1 Vorrichtung zur Steuerung eines Synchronmotors A device for controlling a synchronous motor |
| 11/15/2001 | US20010040706 Image reading apparatus, image recording apparatus and image forming apparatus |
| 11/14/2001 | EP1154558A2 Method for controlling a synchronous motor |
| 11/13/2001 | US6316902 Step motor drive control circuit |
| 11/01/2001 | US20010035730 Stepping motor driving apparatus and image forming apparatus having such driving apparatus |
| 10/24/2001 | CN2456370Y Small stepping motor controller |
| 10/23/2001 | US6307345 Resonant circuit control system for stepper motors |
| 10/18/2001 | US20010030908 Spring, mainspring, hairspring, and driving mechanism and timepiece based thereon |
| 10/17/2001 | CN1073200C Lubricating oil sully unit for two-cycle engines |
| 10/11/2001 | US20010029318 Device for controlling an amount of light of a lighting unit for an endoscope |
| 10/11/2001 | US20010028235 Motor driving apparatus, control method therefor, control program therefor, storage medium readable by computer storing control program and image forming apparatus |
| 10/10/2001 | EP1143600A1 Stepping motor and driving apparatus |
| 10/09/2001 | US6299577 Device for controlling an amount of light of a lighting unit for an endoscope |
| 09/27/2001 | US20010024106 Generator comprising two pairs of differential outputs |
| 09/13/2001 | DE10011079A1 Single or multi-phase inverter for stepper or synchronous motor, has intermediate circuit with periodically or non-periodically steadily varying output parameter controlled or regulated by continuously controllable semiconducting valves |
| 09/13/2001 | DE10010962A1 Differential stepper motor unit has two stepper motors that operate in opposition for fine steps and together for maximum speed, achieving a significant increase in dynamic range |
| 09/07/2001 | WO2001065569A1 Instrument reference system |
| 09/05/2001 | EP1130762A2 Method for driving a stepping motor and actuator using that stepping motor |
| 09/04/2001 | US6285156 Sensorless step recognition process for stepping motors |
| 09/04/2001 | US6285155 Pseudo half-step motor drive method and apparatus |
| 09/04/2001 | US6285148 Energization control device for electric motor |
| 08/29/2001 | EP1128544A1 Generator with two pairs of different PWM outputs |
| 08/23/2001 | WO2001061837A1 Method for effecting the synchronous control of several stepping motors |
| 08/23/2001 | WO2001061836A1 Method for accelerating a control movement in a positioner system with step motors |
| 08/23/2001 | DE10007643A1 Operating method for stepper motor e.g. for light beam width regulating system in vehicle, involves supplying motor windings with higher current levels at lower stepper motor temperatures than for higher stepper motor temperatures |
| 08/23/2001 | DE10007212A1 Verfahren zur Beschleunigung der Verstellbewegung in einem Positioniersystem mit Schrittmotoren A method for accelerating the adjustment movement in a positioning system with stepping motors |
| 08/23/2001 | DE10007201A1 Synchronous control of several stepper motors, involves triggering different step lengths with one period of base frequency for different stepper motors with specifically associated step lengths |
| 08/23/2001 | DE10007163A1 Steuergerät für Motor mit Stellungssteuerung Control unit for motor position control |
| 08/15/2001 | CN1069795C Method and device for controlling stepping electric motor |
| 08/14/2001 | US6274996 Drive control method for stepping motor |
| 08/09/2001 | US20010012136 Film scanner |
| 08/09/2001 | US20010012135 Film scanner |
| 08/09/2001 | DE10005021A1 Drive method for active actuator unit for motor vehicle air conditioner or lighting controller, by transmitting absolute values for positioning stepper motor |
| 08/07/2001 | US6271641 Step motor driving device |
| 08/01/2001 | CN1306341A Drive method for frequency and voltage boosting step motor |
| 07/19/2001 | WO2001051943A1 Load angle determination for electrical motors |
| 07/17/2001 | US6262554 Electronic device and method of controlling the same |
| 07/17/2001 | US6261228 Device for controlling an amount of light of a lighting unit for an endoscope |
| 07/11/2001 | EP1114508A1 Nominal current generating device |
| 07/10/2001 | US6259225 Stepping motor control unit and method, printer employing the same, and information recording medium |
| 07/04/2001 | CN1068155C Method for driving step-by-step motor |
| 06/27/2001 | EP1109688A1 Heating, ventilating and/or air conditioning device with at least one mobile element controlled by a single-pole motor |
| 06/26/2001 | US6252371 Driving circuit of stepping motor |
| 06/19/2001 | US6249095 Polyphase motor driving apparatus, polyphase motor driving apparatus driving method and polyphase motor system |
| 06/13/2001 | CN1299182A Method for using timing system of computer to control step motor |
| 06/12/2001 | US6246205 Driving apparatus for stepping motor |
| 06/07/2001 | WO2001041294A1 Digital current ramping to reduce audible noise in stepper motor |
| 06/07/2001 | WO2001033710A8 Method and apparatus for driving step motors without overshoot |
| 06/06/2001 | EP0720563B1 Bag tyier with a ribbon sensing device |
| 05/31/2001 | WO2001039359A1 Detect stepper motor movement by sensing induced emf on motor windings |
| 05/31/2001 | CA2394972A1 Detect stepper motor movement by sensing induced emf on motor windings |
| 05/23/2001 | CN2431678Y Driving signal controller for stepping motor |
| 05/15/2001 | US6231504 Device for controlling an amount of light of a lighting unit for an endoscope |
| 05/10/2001 | WO2001033710A1 Method and apparatus for driving step motors without overshoot |
| 05/03/2001 | WO2001031773A1 Driver for operating a stepper motor at a higher voltage than the nominal voltage |
| 04/25/2001 | CN1065087C Control method for step-by-step motor |
| 04/24/2001 | US6222340 Stepping motor control device and optical head drive device |
| 04/19/2001 | DE19938625A1 Schaltungsanordnung zur Steuerung eines Schrittmotors Circuit arrangement for controlling a stepping motor |
| 04/19/2001 | DE10042199A1 Chopper for switched reluctance motor, has controller that lowers chopping frequency of current when motor speed varies from preset value |
| 04/17/2001 | US6217478 Position and/or angle control method and device without absolute positions sensor |
| 04/03/2001 | US6211642 Open-loop step motor control system |
| 04/03/2001 | US6209513 Inductive load driving device and driving method |
| 03/28/2001 | CN2425454Y Two-way control circuit for single-phase stepper motor and use thereof |
| 03/28/2001 | CN1289176A Step motor controlling method |
| 03/27/2001 | US6208107 Use of digital current ramping to reduce audible noise in stepper motor |
| 03/22/2001 | DE19951365C1 Electric stepping motor group operating device e.g. for automobile stepping motors, has supply voltage divided into different operating voltages for respective stepping motor groups |
| 03/21/2001 | EP1085388A2 Motor controlling method and apparatus |
| 03/21/2001 | CN1288604A Stepper motor drive, method of driving steeper motor, timer and method of controlling timer |
| 03/20/2001 | US6204625 Driving apparatus for stepping motor |
| 03/14/2001 | EP1083653A2 Motor driving apparatus |
| 03/13/2001 | CA2132654C Automatic print speed control for a barcode printer |
| 03/07/2001 | EP1081844A2 Motor control circuit and control system using the same |
| 02/27/2001 | US6194863 Method and apparatus for driving a stepping motor |
| 02/27/2001 | US6194862 Control device for stepper motor, control method for the same, and timing device |
| 02/21/2001 | EP1077526A2 Switching circuit for controling a stepping motor |
| 02/21/2001 | EP1077525A2 Phase synchronization of redundant motor windings |
| 02/21/2001 | EP1077524A2 Motor-controller and method for microstepping a stepper-motor |
| 02/14/2001 | CN2419742Y Remote controller for cable aerating apparatus |
| 02/08/2001 | WO2001010011A1 Electronic controller for mirror assembly |
| 02/06/2001 | US6184646 Stepping motor control unit and image forming apparatus |
| 01/31/2001 | CN1061488C Controllor for step-by-step motor |
| 01/25/2001 | WO2001006635A1 Programmable stepper motor controller and method therefor |
| 01/25/2001 | DE19928366C1 Operating method for stepping motor drive system has additional value for altering stator field current vector angle for resonance compensation corrected via rev- and/or current-dependent correction factor |
| 01/18/2001 | WO2001003959A1 Heating, ventilating and/or air conditioning device with at least one mobile element controlled by a single-pole motor |
| 01/18/2001 | DE19949896C1 Parallel stepping motors monitoring method evaluates voltages supplied to coil pairs of stepping motors during test phase for providing automatic cut-out command upon indication of fault condition |
| 01/09/2001 | US6172942 Analog electronic watch |
| 01/04/2001 | WO2001001558A1 Method for setting a polyphase electric stepper motor |
| 01/04/2001 | DE19928357A1 Operating method for synchronous machine e.g. stepper motor, involves synchronizing switching frequency to integral multiple of control signal fundamental frequency, and tracking it when machine speed varies |
| 01/04/2001 | DE10018053A1 Schrittmotor-Stabilisierungssteuerung Stepper motor stabilization control |
| 12/27/2000 | EP1063762A2 Method for positioning a stepper motor and electric drive |
| 12/27/2000 | CN1059990C Control method of stepper-motor |
| 12/26/2000 | US6166510 Image forming apparatus |
| 12/19/2000 | US6163341 Portable video camera with adjustable motor driving signals for optimizing power consumption |
| 12/19/2000 | US6163126 Electronic device |
| 12/12/2000 | US6160630 Image reading apparatus |
| 12/12/2000 | US6160330 Three-phase stepping motor and driving method therefor |
| 12/07/2000 | DE19928356C1 Electric stepping motor positioning method has required current signal corrected by offset value upon reaching or exceding control threshold of regulation circuit for stepping motor |
| 11/28/2000 | US6153953 Multi-phase PM-type stepping motor |
| 11/21/2000 | US6150789 Stepper motor control |