Patents for H02P 7 - Arrangements for regulating or controlling the speed or torque of electric dc-motors (10,217)
06/1992
06/16/1992US5123079 DC motor and controlling system therefor
06/16/1992US5122716 Apparatus for reversibly controlling a motor
06/16/1992CA1303702C Condition responsive pump control utilizing integrated, commanded, and sensed flowrate signals
06/13/1992CA2032071A1 Mailing machine base
06/13/1992CA2032026A1 Motor control circuit for a machine
06/10/1992EP0489343A2 Control or regulating device for appliances supplied by accumulators
06/10/1992CN1017017B Chopper speed governing method by microcomputer control
06/09/1992US5120023 Hoist winding system
06/09/1992CA1302729C Tachometric device driven by an electric motor
06/04/1992DE4038857A1 Regulating path for DC motor armature current regulation - uses inverse transmission function component across PI regulator to compensate for nonlinearity
06/04/1992DE4038199A1 Transient voltage and current limiting circuitry for electric motor - uses controlled semiconductor bridge to provide current and=or voltage limiting path
06/03/1992CN2106441U Differential electromagnetic voltage regulator
06/03/1992CN2106107U Electric locomotive v-mos speed regulation controller for mine
06/02/1992US5119466 Control motor integrated with a direct current motor and a speed control circuit
06/02/1992US5119001 Frequency controlled oscillating pet toy
06/02/1992US5119000 Low noise motor drive circuit
05/1992
05/29/1992WO1992009016A1 Speed control device and predicting machine
05/26/1992CA1301831C Motor control fail-safe circuit
05/26/1992CA1301469C Drive system for automatic washer
05/19/1992CA1301241C Feedback circuitry for d.c. motor speed control
05/19/1992CA1301240C Control circuits, electronically commutated motor systems and methods
05/16/1992CA2038257A1 Full-wave feedback speed control for hand mixer
05/14/1992WO1992008267A1 Servomotor-control circuit
05/14/1992DE4035067A1 Schaltungsanordnung zur steuerung eines stellmotors Circuit arrangement for the control of an alternate engine
05/06/1992EP0483447A2 Pulse width modulated motor control system
05/06/1992CN1060938A Load impact controller for speed regulator system
05/05/1992US5111381 H-bridge flyback recirculator
05/05/1992US5111378 DC chopper converter
04/1992
04/30/1992WO1992007421A1 Process for controlling electric motors with permanent-magnet excitation
04/28/1992US5109171 Low-noise miniature electric motor
04/28/1992US5107713 Air sampling pump
04/25/1992WO1992008275A1 Load impact controller for a speed regulator system
04/25/1992CA2072071A1 Load impact controller for a speed regulator system
04/22/1992EP0481773A1 Improvement of series-excitation motor speed control circuit
04/22/1992EP0481328A2 Bidirectional current sensing for power MOSFETS
04/22/1992EP0481096A1 Method for determining the frequency amplification of a voltage-to-frequency converter
04/21/1992US5107190 Means and method for optimizing the switching performance of power amplifiers
04/21/1992US5106171 Antilock brake system with step-down release control
04/21/1992CA1299236C Variable motor speed control for automatic washer
04/16/1992WO1992006533A1 Electric motor fed by alternating current rectified by means of a diode
04/16/1992DE4133722A1 Verfahren zur steuerung von elektromotoren mit permanentmagnetischer erregung Method for control of electric motors with permanent magnet excitation
04/15/1992EP0480509A1 Arrangement for supplying energy to a load, as well as a drive system and a sound reproduction system comprising such an arrangement
04/08/1992EP0479658A1 Speed commutating process for a constant flux multi-polar electric motor and motor ventilator set with this speed commutating process
04/01/1992EP0477643A2 Control of a discontinuous current by a thyristor rectifier with inductive load
03/1992
03/31/1992US5101315 Drive control apparatus for electric actuator
03/31/1992US5100101 Electromechanical bidirectional rotation device
03/26/1992DE4029883A1 Rotation direction locking system for battery operated tool - has rotation direction changeover switch and unit for locking changeover switch during operation of permanent excited DC motors
03/26/1992DE4029765A1 DC electric motor driven pump operated in two directions - has motor terminals connected selectively with positive or negative pole operating voltage source across changeover contacts of two relays
03/19/1992WO1992004666A1 Positioning control
03/18/1992EP0475777A1 Rectifying motor lap-wound magnetic winding with adjustable commutating angle
03/18/1992EP0475704A1 Drive circuit for an electric motor
03/17/1992US5097378 Safety device for video cassette recorder
03/17/1992US5097185 Method and device for controlling speed of a motor in a powered seat
03/17/1992US5097184 Battery operated device
03/11/1992CN1059431A A.c. motor capable of regulating speed by use of speed super position
03/03/1992US5093892 Motor speed control system
03/03/1992CA1296763C Motor driving power supply apparatus including switching regulatorcontrol loop
02/1992
02/18/1992US5089761 Motor control system
02/18/1992US5089715 Multiposition switch device for controlling a driving means
02/18/1992CA1296051C Torque determination for control of an induction motor apparatus
02/13/1992DE4125311A1 Rotary drive change in appts., e.g. false twister - where plug and socket connection to three=phase current supply is wired to give change when plug is changed by 180 deg.
02/12/1992EP0470657A2 Antilock brake control method with step-down release control
02/12/1992CN2096161U Field controller dc motor pulse speed regulator
02/05/1992EP0469347A2 Apparatus for reversibly controlling a motor
02/05/1992EP0468989A1 Control circuit.
02/04/1992US5086492 Switching current regulator for motor control
02/04/1992US5086261 Motor speed control device for use in an image forming apparatus
01/1992
01/29/1992EP0468557A2 Anti-lock brake control with motor current control
01/28/1992US5084633 Bidirectional current sensing for power MOSFETS
01/28/1992CA1295009C Electric motor controllers
01/22/1992EP0466757A1 A controller for an electrical load
01/14/1992US5081405 Electrical actuator with means for preventing dither at a limit switch
01/14/1992US5081404 Motor driver interface fault detection circuit with dual mode fault detection
01/08/1992EP0465381A1 Device for controlling the rotation speed of an electric motor
01/07/1992CA1293990C Dc motor control circuit providing variable speed operation
12/1991
12/31/1991US5077824 Direct-current motor control
12/31/1991US5077509 Multiple windings electrical motors controllers
12/30/1991CA2040648A1 Electric gearshift for children's cars
12/27/1991EP0462169A1 An actuator device for an electric window winder.
12/24/1991US5075612 Method and device for determining the optimal excitation value which minimizes the electromagnetic losses of electric machines
12/12/1991DE4017720A1 Drive with armature current circuit for flame cutter - comprises current transformer, discriminator and limiter in form of a zener diode
12/11/1991EP0459998A1 Method and apparatus for dc motor speed control
12/11/1991EP0166744B1 A programmed microprocessor for a speed control system for a d.c. motor
12/10/1991US5071199 Antilock brake system with motor current control
12/04/1991EP0459548A2 Method and apparatus for controlling braking pressure applied to a vehicle brake
12/03/1991US5070283 Traction motor controller for forklift vehicles
11/1991
11/27/1991EP0458602A1 Apparatus for controlling open/close drive of a lid for a recording medium player
11/26/1991CA1292505C Slow start power supply
11/21/1991EP0316324B1 Speed control unit for direct current electric motor with intrinsic feed-back
11/13/1991EP0456345A1 Traction motor optimizing system for forklift vehicles
11/13/1991EP0456344A1 Traction motor controller for forklift vehicles
11/13/1991CN1056194A Variable brush step speed regulation dc motor
11/12/1991US5065341 Printer for a computer
11/12/1991US5065078 D.C. motor control circuit for radio controlled toy
10/1991
10/30/1991CN1055843A Double rotor, worm gear drive and full adjustable speed motor unit and its speed adjusting method
10/29/1991CA1291524C Speed control circuit for an electric motor
10/23/1991EP0452497A1 Carriage controller of a printer
10/23/1991CN1055629A Wave-cutting method and equipment for pwm frequency-converting speed regulation of induced motor
10/23/1991CN1055627A Double-rotor speed-adjusting motor and the speed-adjusting method
10/22/1991US5059992 Drive device for motor
1 ... 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 ... 103