| Patents for H02P 8 - Arrangements for controlling dynamo-electric motors rotating step by step (4,097) |
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| 08/19/1993 | WO1993016520A1 Stepper motor drive circuit |
| 08/18/1993 | EP0555299A1 Synchronous motors |
| 08/17/1993 | US5237250 Multiplexed stepper motor control apparatus |
| 08/12/1993 | DE4203191A1 Position control system for stepper motor actuator driven throttle for automobile - has engine controller generating pulses to windings that are varied by feedback signals from winding drive stages |
| 08/10/1993 | US5235682 Port output controller for use in microcomputer |
| 07/27/1993 | US5231343 Driving apparatus for stepping motor capable of restraining motor noise |
| 07/21/1993 | EP0551562A2 Method for synchronising a display device having an electronically controlled stepper motor |
| 07/13/1993 | US5227709 Closed loop single step response by open winding voltage feedback system and method for multiple phase step motors |
| 07/06/1993 | US5225756 Stepper motor driver circuit |
| 06/23/1993 | EP0548059A2 Brushless motors |
| 06/22/1993 | US5221885 Low-power dual voltage drive circuit and method |
| 06/09/1993 | CN1073059A Control technique and device for equilibrium rotating moment and non-hysteresis-constant current of step motor |
| 06/03/1993 | DE4139513A1 Controlling movable element in motor vehicle - has two=phase stepper motor with control for each phase and control to drive motor if either phase fails |
| 06/01/1993 | US5216348 Method of controlling a stepping motor and drive circuit employing the same |
| 06/01/1993 | US5216347 Stepper motor control system |
| 06/01/1993 | US5216345 Mixed mode stepper motor controller and method |
| 05/25/1993 | CA1318397C Method and apparatus for driving a stepping motor |
| 05/18/1993 | US5212434 Phase-locked step motor speed servo controller |
| 05/12/1993 | CN1020564C Recording apparatus |
| 05/04/1993 | US5208523 Stepper motor with vernier control mode |
| 05/01/1993 | WO1993009596A1 Specimen processing and analyzing systems with variable zener-diode flyback stepper motor control |
| 05/01/1993 | CA2099283A1 Specimen processing and analyzing systems with variable zener-diode flyback stepper motor control |
| 04/28/1993 | EP0401293B1 Microstepping of an unipolar d.c. motor |
| 04/27/1993 | US5206571 Stepper motor controllers |
| 04/07/1993 | EP0535369A1 A control system of a motor |
| 03/30/1993 | US5198741 Drive control system of stepping motor |
| 03/23/1993 | US5196777 Stepping motor drive control system |
| 03/16/1993 | US5194796 Micro-step drive system of a five-phase stepping motor |
| 03/16/1993 | US5194795 Drive system and a control unit therefor |
| 02/23/1993 | US5189356 Voltage drive amplifier with voltage feedback |
| 02/23/1993 | US5189354 Angular position selecting apparatus |
| 02/10/1993 | EP0526660A1 Apparatus for controlling load numerically |
| 02/09/1993 | US5185627 Electrophotographic printer with media motion motor control |
| 02/03/1993 | EP0525468A2 Method for controlling a stepping motor |
| 01/26/1993 | US5182685 Stepper motor torque variance compensation using varied applied voltage |
| 01/26/1993 | US5182507 Stepping motor driving circuit having failsafe function |
| 01/26/1993 | US5181429 Headlamp positioning device |
| 01/14/1993 | DE4121246A1 Stepper motor for motor vehicle dashboard displays - has electronic control unit cong. input filter, microprocessor, ROM, EPROM or EEPROM and drive stage |
| 01/07/1993 | DE4121617A1 Logic information drive circuitry for stepper motor windings - has evaluation circuit for chopper pulses fed to power output stages for motor windings |
| 01/05/1993 | US5177422 Recording control system for a recording apparatus |
| 12/29/1992 | US5175482 Stepping motor control circuit |
| 12/16/1992 | EP0517752A1 Improvements in or relating to the control of stepping motors |
| 12/15/1992 | US5171982 Display device with photoelectric sensing of unevenly spaced marks on a coding disk |
| 11/24/1992 | US5166590 Method and circuit for feeding a single-phase stepping motor |
| 11/17/1992 | US5164650 Control device for stepping motor |
| 11/17/1992 | US5164649 Method and apparatus for controlling a stepping motor |
| 11/12/1992 | WO1992020143A1 Stepper motor ramp generation |
| 11/04/1992 | EP0511513A1 Method for driving a stepping motor in reverse |
| 11/04/1992 | CN1065960A Inductive current switching system and method |
| 10/21/1992 | EP0509681A2 Method and apparatus for controlling a stepper motor |
| 10/20/1992 | US5157515 Image reading apparatus using a plurality of phase excitation modes |
| 10/20/1992 | CA2061330A1 Inductive current switching system and method |
| 10/14/1992 | EP0360854B1 Two-state, bilateral, single-pole, double-throw, half-bridge power-switching apparatus and power supply means for such electronic power switching apparatus |
| 10/14/1992 | EP0273052B1 Device for detecting the rotational position of rotor of motor |
| 10/13/1992 | US5155427 Drive controller for stepping motor |
| 09/29/1992 | US5151640 Scanning device having a memory for storing driving steps for a stepping motor |
| 09/23/1992 | CN1064774A Universal power supply for step-by-step motor |
| 09/22/1992 | US5150030 Motor driving device |
| 09/17/1992 | WO1992016047A1 Apparatus for controlling load numerically |
| 09/16/1992 | EP0502875A1 Safety system for a stepper-motor drive. |
| 09/15/1992 | US5148092 Stepping motor driving circuit having failsafe function |
| 09/15/1992 | US5147143 Printer carriage homing mechanism |
| 09/08/1992 | US5145269 Printer with a plurality of ink ribbon cassettes having a cam lift mechanism controlled by a stepper motor |
| 09/02/1992 | EP0501902A2 Motor driving apparatus for printer |
| 08/18/1992 | US5140515 Inductive load current controller |
| 07/21/1992 | US5132603 Stepping motor |
| 06/23/1992 | US5124625 Position control system |
| 06/23/1992 | US5124606 Dual rotor with continuous/positioning reverse controls |
| 06/10/1992 | CN1017018B Stepping motor control apparatus |
| 05/26/1992 | US5117171 Method and apparatus for controlling a stepping motor |
| 05/26/1992 | CA1301827C Microstepping of an unipolar d.c. motor |
| 05/14/1992 | WO1992008277A1 Synchronous motors |
| 05/13/1992 | EP0484770A1 Step by step motor control method and device for carrying out this method |
| 05/12/1992 | US5113113 Constant current reluctance motor drive systems |
| 05/05/1992 | US5111242 Image forming apparatus having a more smoothly controlled image forming element |
| 04/22/1992 | EP0481495A2 Port output controller for use in microcomputer |
| 04/22/1992 | EP0481486A2 Stepping motor control circuit |
| 04/22/1992 | EP0481376A2 Apparatus and method for controlling a step motor for driving a chemical pump |
| 04/21/1992 | US5107194 Stepper motor control to vary output torque |
| 04/14/1992 | US5105140 Peristaltic pump motor drive |
| 04/07/1992 | US5103151 Method for driving a stepping motor |
| 03/25/1992 | CN2100056U Single voltage chopped wave type driving power source for stepping motor |
| 03/11/1992 | EP0473883A2 Display device with stepping motor |
| 02/19/1992 | CN1058748A 记录设备 Recording equipment |
| 02/13/1992 | DE4025035A1 Multi-phase current circuit for electric stepping motor - uses basic sawtooth voltage waveform for providing phase-shifted phase currents |
| 02/12/1992 | EP0470685A1 Reluctance motor |
| 02/11/1992 | US5087867 Motor driving apparatus and printer |
| 02/06/1992 | DE4125892A1 Microprocessor control system for angular step synchronous motor - includes voltage controlled frequency generator connected with three=phase generator by ramp control across mixing stage |
| 01/29/1992 | EP0468920A1 Positioning device |
| 01/28/1992 | US5084661 Position control system for information storage system |
| 01/15/1992 | EP0465857A2 Stepper motor throttle controller |
| 01/15/1992 | EP0465850A2 Recording apparatus |
| 01/14/1992 | US5080276 Motor-driving circuit and wire-bonding apparatus |
| 01/08/1992 | EP0465381A1 Device for controlling the rotation speed of an electric motor |
| 12/27/1991 | EP0462335A1 Method and apparatus for driving stepping motor |
| 12/24/1991 | US5075609 Recording apparatus |
| 12/18/1991 | EP0462050A1 Method and circuit for detecting the drop from synchronism of a stepper or synchronous motor |
| 12/11/1991 | EP0461066A1 Method and circuit to control a step- or synchronous motor |
| 12/11/1991 | EP0460776A1 Stepping motor control |
| 12/03/1991 | US5070356 Camera having television mode |