| Patents for H02P 5 - Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors (4,788) |
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| 08/19/1993 | DE4204093A1 Open or closed loop control for electric motors - provides loop control of inverter-fed induction motor and brushless DC motor with common supply |
| 08/18/1993 | CN2140589Y Multifunctional electric motor with rotor magnetic trend holographic control |
| 08/17/1993 | US5237494 Frequency inverting apparatus |
| 08/04/1993 | EP0397818B1 A process and device for changing the actual rotation speed of a multi-phase non-synchronous motor and a suitable motor system for applying the process |
| 07/28/1993 | EP0506938A4 Induction motor propulsion system for powering and steering vehicles |
| 07/27/1993 | US5231335 Double spindle synchronous driving apparatus |
| 07/20/1993 | US5228558 Control system for an accumulating conveyor |
| 07/08/1993 | WO1993012999A2 Control system for an accumulating conveyor |
| 07/08/1993 | WO1993012860A1 Centrifuge with dual motor synchronous drive system |
| 07/08/1993 | CA2103912A1 Centrifuge with dual motor synchronous drive system |
| 07/01/1993 | DE4243045A1 Controller form cold strip rolling system - matches stage roller forces, roller speed and strip tension to achieve constant strip thickness, with low axial force on strip |
| 06/30/1993 | CN1073651A Elevator controller |
| 06/24/1993 | CA2070196A1 Control system for an accumulating conveyor |
| 06/22/1993 | US5221185 Method and apparatus for synchronizing rotating machinery to reduce noise |
| 05/12/1993 | EP0256141B1 Method of controlling servo motor |
| 05/11/1993 | US5210473 System with delay timer for motor load equalization |
| 05/06/1993 | DE4135680A1 Inverter motor drive limiting rate of change of output currents - using inductive stages coupled between inverter outputs and motor units |
| 05/05/1993 | EP0539637A1 Simultaneously operative multi-unit AC or DC series excitation motors or compound motors interlock driving circuit device |
| 04/29/1993 | DE4135481A1 Drive unit for installation with continuously variable RPM setter esp. for rotary kiln - drives furnace pinion by main electromotor and control motor regulated via frequency converter |
| 04/28/1993 | CN1071382A Road train driven by electric motor |
| 04/21/1993 | EP0537344A1 Motor controller |
| 04/20/1993 | US5204593 Drive system for information recording/reproducing apparatus |
| 04/20/1993 | US5203762 Variable frequency centrifuge control |
| 04/15/1993 | WO1993007023A1 Vehicle with driving wheels driven by electric motors |
| 04/15/1993 | DE4133912A1 Fahrzeug mit durch elektromotoren angetriebenen antriebsraedern Vehicle driven by electric motors drive wheels |
| 04/13/1993 | US5202611 Synchronization control system for servo motors |
| 04/08/1993 | DE4132765A1 RPM regulation system for printing machine drive - provides separate current regulation for main drive motor and each auxiliary drive motor |
| 04/01/1993 | WO1993006598A1 Recorder with drive phase detector |
| 04/01/1993 | WO1993006539A1 Method and apparatus for determining the phase difference between two input signals |
| 03/31/1993 | CN2129049Y Arrangement for speed regulation of dc electric motor |
| 03/31/1993 | CN1070505A Recorder with drive phase detector |
| 03/25/1993 | DE4131278A1 Recorder mit antriebs-phasendetektor Recorder with Drive-phase detector |
| 03/25/1993 | DE4130295A1 Dispensing system for aggressive fluids or pastes - has double piston pump units operated in synchronised cycle to deliver output keeping pulsation low |
| 03/23/1993 | US5196769 Motor control device |
| 03/02/1993 | US5191520 Power supply system |
| 02/10/1993 | CN2126941Y Whole direct-current adjustable-speed motor |
| 02/03/1993 | EP0526116A2 Servomotor control device |
| 01/07/1993 | EP0521162A1 Apparatus for controlling electric car |
| 12/30/1992 | EP0520225A1 Individual field excitation for multiple-motor drive |
| 12/23/1992 | CN1067341A System and method for controlling speed of electric motor |
| 12/17/1992 | DE4126392C1 Appts. for spooling up fibres, preventing slippage and power fluctuations - includes controlling spooling speed by regulating spool spindle revolutions acccording to contact roller speed |
| 11/24/1992 | US5166582 Drive arrangement of an open-end spinning machine |
| 11/10/1992 | US5162707 Induction motor propulsion system for powering and steering vehicles |
| 10/28/1992 | CN1065759A Multi-motor multi-speed automatic tracing synchronous device |
| 10/27/1992 | US5159503 Phase and period synchronization for a slave disk drive |
| 10/21/1992 | EP0456728A4 Power supply system |
| 10/14/1992 | EP0508788A1 Circuit arrangement of a DC shunt or compound motor |
| 10/07/1992 | EP0506938A1 Induction motor propulsion system for powering and steering vehicles |
| 10/06/1992 | US5153487 Method and circuit for the monitoring of electromotive controlling elements |
| 10/06/1992 | CA1308466C Microcomputer control system for a canister vacuum cleaner |
| 09/22/1992 | US5150020 Driving controlling method for drums of automatic winder |
| 09/16/1992 | EP0502875A1 Safety system for a stepper-motor drive. |
| 09/09/1992 | EP0502459A2 Multi-shaft driving apparatus and fluid rotary apparatus |
| 09/09/1992 | EP0214300B1 Apparatus for controlling the speed of electric motors |
| 09/08/1992 | US5146148 Process and a device for changing the effective speed of a polyphase asynchronous motor and a suitable motor system for the application of the process |
| 08/27/1992 | DE4105162A1 Regulating system for at least one collectorless electric servomotor - uses pulse width modulated signal with rectifier unit connected at input side to AC voltage source and DC voltage intermediate circuit and inverters |
| 08/12/1992 | EP0201605B1 System for controlling the speed of a servo motor |
| 08/06/1992 | WO1992012873A1 Apparatus for controlling electric car |
| 07/29/1992 | EP0495987A1 Method and apparatus for controlling synchronized phases in system for driving printing rolls for corrugated board printing machine |
| 07/14/1992 | US5130096 Titrating system including pulse length modulation means |
| 07/08/1992 | EP0493848A2 Electric motor drive and power processing apparatus |
| 07/02/1992 | DE4042275A1 Controller for multiple drive-shafts - uses proportional-integral action with shared gain between reference circuit and additional drive-shaft circuits |
| 07/02/1992 | DE4041087A1 Regulation of motor-driven levers for moving large window casement or dome in building - ensures all motors have equal speed by comparing displacements produced by each motor |
| 07/01/1992 | EP0493009A1 Variable frequency centrifuge control |
| 06/21/1992 | CA2058217A1 Variable frequency centrifuge control |
| 06/16/1992 | CA1303666C Servo system for a motor |
| 05/27/1992 | EP0486996A2 Control system for electric motor vehicle |
| 05/19/1992 | US5115172 Phase locked loop speed control circuit for controlling speeds and relative positions of objects |
| 05/06/1992 | CN1060938A Load impact controller for speed regulator system |
| 04/25/1992 | WO1992008278A1 Induction motor propulsion system for powering and steering vehicles |
| 04/25/1992 | CA2070643A1 Induction motor propulsion system for powering and steering vehicles |
| 04/14/1992 | US5105208 Image forming apparatus with good response motor servo control |
| 04/09/1992 | DE4031209A1 Compensating synchronisation errors of parallel driven conveyor belts - by accelerating one or more according to speed and path of point on one belt |
| 04/02/1992 | WO1992003362A3 Controlling a feed of objects |
| 03/31/1992 | US5101145 Velocity proportional integral regulator with negative feedforward to control response of torque disturbances |
| 03/24/1992 | US5099186 Integrated motor drive and recharge system |
| 03/17/1992 | US5097193 Method and apparatus for direct regulation of output currents of an inverter feeding a predetermined number of induction machines |
| 03/12/1992 | DE4128803A1 Static frequency changer with rectifier connected to AC mains - has DC voltage intermediate circuit connected to rectifier and inverters mounted on cooler |
| 03/05/1992 | WO1992003362A2 Controlling a feed of objects |
| 03/03/1992 | US5093791 Variable gain synchrophasing |
| 03/03/1992 | US5093608 Motor control apparatus |
| 02/18/1992 | CA1296051C Torque determination for control of an induction motor apparatus |
| 02/06/1992 | WO1992001562A1 Method and apparatus for controlling synchronized phases in system for driving printing rolls for corrugated board printing machine |
| 02/05/1992 | EP0469944A2 Energy recovery for a decanter centrifuge |
| 02/05/1992 | EP0241563B1 Speed control system |
| 01/28/1992 | CA1295010C Centrifuge control system having dual processors |
| 01/22/1992 | EP0247206B1 Speed control system |
| 01/21/1992 | US5083074 Method for error correction in synchronized superposed operation of servomotors |
| 01/21/1992 | US5083066 Method of controlling synchronous operation of machine tool |
| 01/15/1992 | EP0465657A1 Electromagnetic balance type scale having rapid response characteristics |
| 12/31/1991 | US5077506 Microprocessor controlled arthroscopic surgical system |
| 12/18/1991 | CN2090752U Speed regulator of machine tool for constant linear speed cutting |
| 12/12/1991 | DE4017442A1 Separate spindle drive - has a two=phase synchronous motor with two coil groups for synchronised running through switches and frequency converter |
| 12/10/1991 | US5072163 Feeding system for electric devices mounted in door |
| 12/10/1991 | CA1293015C Ac-excited generator/motor apparatus |
| 12/04/1991 | EP0458974A1 Inverter-controlled apparatus for carrying and measuring articles |
| 11/27/1991 | CN2089673U Computer controlled silicon controlled rectifier without circulation ac-ac low frequency power supply |
| 11/27/1991 | CN2089672U Isolated electromagnetic speed regulating motor controller |
| 11/26/1991 | US5068559 Induction motor switchable between series delta and parallel wye |
| 11/21/1991 | EP0456728A1 Power supply system. |