Patents
Sitemap › H02 - Generation, conversion, or distribution of electric power › H02P - Control or regulation of electric motors, generators, or dynamo-electric converters; Controlling transformers or reactors or choke coils › H02P 8 - Arrangements for controlling dynamo-electric motors rotating step by step
Patents for H02P 8 - Arrangements for controlling dynamo-electric motors rotating step by step (4,097)
11/1991
11/27/1991EP0458611A2 Motor control circuit
11/27/1991EP0458159A1 Improvements in or relating to stepper motor controllers
11/26/1991US5068586 Steeping motor driving apparatus
11/26/1991CA1292504C Sensorless brushless motor
11/07/1991DE4013583A1 Stepping motor drive affording precise linear terminal velocity - includes computer of final frequency necessary for correction of measured deviation of transit time between stops
11/06/1991EP0455537A1 Simulation device for step motor
11/05/1991US5063339 Stepping motor driving device
11/05/1991US5063338 Power module for electronic control of a dc motor
11/03/1991CA2041697A1 Stepper motor simulator device
10/1991
10/29/1991US5062006 Sheet feeding apparatus and facsimile system having same
10/29/1991US5061888 Method and apparatus for driving stepping motor
10/29/1991CA1291522C Closed-loop, control system for a stepping motor
10/22/1991US5059883 Method and apparatus for driving stepping motor
10/16/1991EP0452226A2 Autofocus unit motor control circuit
09/1991
09/24/1991US5051679 Step motor control device
09/18/1991CN1054691A High-speed low-voltage step motor driver circuit
09/11/1991EP0446058A2 Constant current reluctance motor drive systems
09/11/1991CN1054510A Drive circuit of step motor
09/10/1991US5046850 Driving mechanism for driving an oscillating polarizer
09/05/1991WO1991013490A1 Improvements in or relating to the control of stepping motors
08/1991
08/28/1991EP0443294A1 Method for feeding a monophase stepping motor
08/27/1991US5043649 Stepping motor unit and rotary control valve incorporating the same
08/21/1991EP0442328A1 Stepping motor drive control system
08/20/1991US5041773 Drive circuit for stepping motor
08/08/1991WO1991011851A1 Device for controlling the electrical power supply of a stepper motor and stepper motor equipped with such a device
08/08/1991DE4003522A1 Stepping motor with adaptive set-point current regulator - uses auxiliary controller to reduce desired value of motor current on approach to max. rated value
08/08/1991DE4002158A1 Electronically switchable motor supply from clocked current source - avoids dead time in commutation of stepping pulse to which frequency of clocking oscillator is synchronised
08/06/1991US5038329 Step motor control mechanism for electronic timepiece
07/1991
07/25/1991DE4001769A1 Bidirectional positioning control for stepper motor - has half-bridge switch coupling common node of two windings to earth or supply
07/24/1991CN2081603U Stepping motor driven device
07/23/1991US5034674 Motor driving voltage control device
07/16/1991US5032848 Image forming method
07/16/1991US5032781 Method and circuit for operating a stepping motor
07/16/1991US5032780 Programmable stepper motor controller
07/16/1991US5032779 Driving circuit for stepping motor
07/16/1991CA1286385C Variable reluctance position transducer
07/12/1991WO1991010946A1 Peristaltic pump motor drive
07/02/1991US5028857 Method of controlling a bi-directional stepping motor and a bi-directional stepping motor adapted to be controlled by this method
06/1991
06/25/1991US5027286 Movements of a robot
06/25/1991CA1285311C Single step stepping motor controller
06/19/1991EP0432769A1 Drive controller for stepping motor
06/13/1991WO1991008391A1 Safety system for a stepper-motor drive
06/06/1991DE4035970A1 Recognition of movement of polyphase unipolar stepping motor - is based on multiple samples of voltage taken from successive phases for comparison with desired value
06/05/1991EP0429659A1 Driving system and controller therefor
06/04/1991US5021728 Power source apparatus for electronic equipment
05/1991
05/30/1991WO1991007811A1 Position monitor for a stepper motor
05/21/1991CA1284347C Method and device for controlling the acceleration of an electric stepping motor
05/14/1991US5015939 Control circuit for switched reluctance motor
05/14/1991US5015937 Parametric current control for microstepping unipolar motor
04/1991
04/27/1991WO1991007009A1 Parametric current control for microstepping unipolar motor
04/27/1991CA2070413A1 Parametric current control for microstepping unipolar motor
04/23/1991CA1283443C Electric power system for starting a large rotatable synchronous machine
04/23/1991CA1283442C System for driving drum
04/17/1991EP0422529A2 System for controlling the electric motor of a vehicle actuating device
04/16/1991US5008607 Driving system for stepping motor
04/16/1991CA1283191C Method and apparatus for controlling hydraulic systems
04/10/1991EP0421427A2 Printer with a plurality of ink ribbon cassettes
04/09/1991US5006773 Microcomputer control of stepper motor using reduced number of parts
04/09/1991US5006772 Position monitor for a stepper motor
04/09/1991CA1282822C Stepper motor logic circuit
04/03/1991EP0420427A2 Image forming apparatus
04/02/1991US5004080 Controlling circuit for actuator
04/02/1991US5003948 Stepper motor throttle controller
04/02/1991CA1282455C Reluctance motor with electronically connected stator windings
03/1991
03/26/1991US5003261 Rotation detection circuit having input pulse signals for a step motor
03/19/1991US5001410 Driving system for stepping motor
03/12/1991US4999558 Position control system
03/05/1991US4998163 Stepping motor control having a dynamically variable loop filter circuit
03/05/1991US4998129 Diaphragm control apparatus of a camera
02/1991
02/27/1991EP0414436A2 Stepper motor control
02/12/1991US4992717 Stepper motor drive circuit
01/1991
01/31/1991DE4023642A1 Multiphase stepping motors control - has computer with logic and supervisory circuits affording comprehensive protection against malfunction
01/29/1991US4989116 Chopper circuit for driving electromagnet and/or step motor coils such as employed in a matrix printer
01/29/1991US4988938 System for controlling the driving of a stepper motor
01/22/1991CA1279363C Adaptive controller for a motor vehicle engine throttle operator
01/15/1991US4985669 Electrical rotating machine
01/08/1991US4983891 Facsimile machine
01/02/1991EP0405526A2 Stepping motor driving apparatus
01/01/1991US4982146 Stepping motor driving device
12/1990
12/18/1990CA1278028C Method and circuit arrangement for the drive of a stepping motor
12/13/1990WO1990015476A1 Driving system and controller therefor
12/12/1990EP0402220A1 Method and device to control a step motor
12/12/1990EP0401843A1 Recording apparatus
12/12/1990EP0401563A1 Method for driving a stepping motor
11/1990
11/20/1990US4972132 Stepping motor drive control circuit for a magnetic disk drive
11/20/1990US4972130 Multipurpose, internally configurable integrated circuit for driving in a switching mode external inductive loads according to a selectable connection scheme
10/1990
10/31/1990EP0394941A2 Drive circuit for stepping motor
10/31/1990EP0394902A1 Driving circuit for stepping motor
10/31/1990CN1010235B Electric motor drive for sewing machine, especially industrial sewing machine
10/24/1990CN1010159B Electromechanical actuator
10/16/1990US4963809 Linear step motor type driving apparatus for driving a longitudinally movable body
10/16/1990US4963808 Motor control apparatus
10/16/1990US4962583 Tunnel type or dragon-gate type processing system assembled with selected elements and its related interface means
10/03/1990EP0390036A1 Motor-driving circuit and wire-bonding apparatus
10/03/1990EP0390014A1 Power module for the electronic control of a D.C. motor
10/03/1990EP0389832A1 An electronic circuit for measuring and controlling an electric current flowing through an inductive electric load
10/02/1990US4961037 Stepping motor control device
09/1990
09/30/1990CA2013275A1 Direct-current motor electronic control power unit
09/25/1990US4959738 Method and apparatus for driving a stepping motor
09/25/1990US4959601 Driving device for a stepping motor
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