| Patents for H02P 23 - Arrangements or methods for the control of ac-motors characterised by a control method other than vector control (5,487) |
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| 07/06/1993 | US5225749 System for controlling the rotational speed of a rotary member |
| 06/29/1993 | US5223774 Method for controlling speed of a motor of a card reader |
| 06/24/1993 | WO1993012477A1 Process and arrangement for reducing vibrations caused by jolts in drives having mechanical arrangements capable of vibrating |
| 06/24/1993 | DE4141897A1 Verfahren zur verringerung von schwingungen bei laststoessen bei antrieben mit schwingungsfaehiger mechanischer anordnung Procedures designed to reduce vibrations in laststoessen in drives with schwingungsfaehiger mechanical arrangement |
| 06/23/1993 | EP0547243A1 Method and apparatus for controlling and driving induction motor |
| 06/22/1993 | US5222024 Method of and apparatus for controlling vehicle speed |
| 06/15/1993 | US5220266 Motor speed controlling device capable of correcting for speed detection error caused by change of duty ratio of photocoupler output pulses |
| 06/15/1993 | US5218860 Automatic motor testing method and apparatus |
| 06/09/1993 | EP0545419A1 Inverter unit and controlling method thereof |
| 06/01/1993 | US5216346 Waveform processing circuit for pulse generator |
| 05/25/1993 | US5214367 Controller for compressor driven by induction motor |
| 05/12/1993 | EP0256141B1 Method of controlling servo motor |
| 05/05/1993 | CN1020528C Control device for induction motor |
| 04/29/1993 | DE4135873A1 Detecting position and dynamic parameters e.g. of commutator motor or hydraulic pump - evaluating e.g. ripple current superimposed on periodicity signal which characterises system |
| 04/28/1993 | EP0538959A1 Circuit arrangement to control the rotating speed of a motor |
| 04/27/1993 | US5206575 Device for controlling an AC motor |
| 04/20/1993 | US5204601 Motor control servo system |
| 04/01/1993 | WO1993006448A1 Automatic motor testing method and apparatus |
| 04/01/1993 | CA2118590A1 Automatic motor testing method and apparatus |
| 03/30/1993 | US5198742 Method of preventing the stalling of an asynchronous machine |
| 03/24/1993 | EP0533148A1 Limiter circuit of servo motor control apparatus |
| 03/18/1993 | DE4130849A1 Suppressor of limit cycles due to deadband in closed loop systems - has additional positive and negative voltage components introduced into loop to modify torque error signal |
| 03/02/1993 | US5191272 Method of adjusting gain for motor control |
| 02/16/1993 | US5187420 Method of calculating motor control voltage and motor control device using the method |
| 02/10/1993 | EP0322460B1 Housing structure of amplifier unit for ac spindles |
| 02/10/1993 | EP0313671B1 Temperature compensative revolution speed control for an induction motor |
| 02/04/1993 | WO1993002502A1 Electric machine system |
| 02/03/1993 | EP0526116A2 Servomotor control device |
| 01/28/1993 | DE4224555A1 Output voltage error compensation device for PWM inverter - discriminates polarity of output currents for control of modulator and timer of short-circuit current protection |
| 01/27/1993 | EP0355115B1 Process for regulating the speed of rotation of an electric motor |
| 01/21/1993 | WO1993001653A1 Method and apparatus for controlling and driving induction motor |
| 01/20/1993 | EP0523255A1 Method of suppressing torsional vibration in a motor speed control system and apparatus therefor |
| 01/20/1993 | EP0303717B1 Drive control system for electric motor |
| 01/19/1993 | US5180954 Method and apparatus for controlling a sewing machine |
| 01/12/1993 | US5179336 Method for decreasing the speed of an alternating current motor |
| 01/07/1993 | DE4120611A1 Limiting interface voltage of three=phase drive voltage converter - switching in higher output signal current limit for supply failure and deceleration mode |
| 12/16/1992 | EP0518244A2 Electric current measurement apparatus for a solid state motor controller |
| 12/02/1992 | EP0324806B1 Switch arrangement for controlling motors |
| 12/01/1992 | US5168172 Control system for a washing machine |
| 11/26/1992 | WO1992021176A1 Device for controlling current application to inductance coil |
| 11/25/1992 | EP0514847A2 System and method for controlling speed of electric motor in extremely low speed range using rotary pulse encoder |
| 11/24/1992 | US5166585 Motor control apparatus for an electric vacuum cleaner |
| 11/21/1992 | CA2068902A1 Structure and method for distributing failure-induced transient currents in a multiphase electrical machine |
| 11/19/1992 | EP0514160A2 Programmable motor drive system for a polygon scanner |
| 11/19/1992 | EP0513994A2 An actuator and a valve actuator system |
| 11/17/1992 | US5164788 Method and apparatus for controlling reciprocation of movable mirror for photoacoustic fourier transform spectroscopy |
| 11/17/1992 | US5164644 Apparatus for controlling a ceiling fan |
| 11/12/1992 | DE4115010A1 Speed control of systems with high order transfer functions and multi-variable outputs - generating control vector that introduces stabilising function for control of drives with elastic elements |
| 11/05/1992 | DE4113068A1 Ascertaining or regulating RPM of async. motor - altering frequency of variable voltage or current source until characteristic signal indicates switching between motor and generator modes |
| 10/29/1992 | WO1992019038A1 Process and circuits for determining machine-related electromagnetic and mechanical state variables on electrodynamic induction machines supplied via converters |
| 10/20/1992 | US5156868 With a trough in which at least one rotor driven by an elctric motor is arranged |
| 10/15/1992 | DE4212027A1 Digital 3=phase pulse duration modulation signal generator for motor controller - uses comparison of reversible counter count values with stored reference values for each motor phase |
| 10/14/1992 | EP0273052B1 Device for detecting the rotational position of rotor of motor |
| 10/08/1992 | DE4111007A1 Phase locked loop motor speed controller for use in digital video recorder - has control circuit with stored component for motor cycle that is subtracted from regulating voltage for variation free output |
| 10/06/1992 | US5153489 Electric current measurement apparatus for a solid state motor controller |
| 09/29/1992 | US5151637 Deceleration apparatus for motor and drive circuit for use in motor deceleration apparatus or control apparatus for use in sewing machine |
| 09/27/1992 | WO1992017883A1 A method and a device for altering of the angular velocity of a driven rotating media carrier |
| 09/27/1992 | CA2106305A1 Method and a device for altering of the angular velocity of a driven rotating media carrier |
| 09/16/1992 | EP0503879A2 Synchronous motor with permanent magnets and motor system |
| 09/15/1992 | US5148089 Method and apparatus for controlling 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 |
| 09/03/1992 | WO1992015148A1 Four quadrant motor controller |
| 09/02/1992 | EP0501437A2 Parameter setting apparatus for motor control unit |
| 09/02/1992 | EP0500948A1 System for driving induction motor |
| 09/01/1992 | US5144210 Capstan servo device |
| 08/26/1992 | EP0500121A2 Controller for induction motor |
| 08/25/1992 | US5142214 Synchronous motor having selectable rotation direction |
| 08/20/1992 | WO1992014296A1 Method of suppressing torsional vibration in a motor speed control system and apparatus therefor |
| 08/19/1992 | EP0498891A1 System for controlling servomotor |
| 07/08/1992 | EP0493403A1 Process and device for imitating the speed in incremental measuring systems |
| 07/01/1992 | EP0493322A1 Assembly for driving a motor for blinds and similar in both directions of rotation |
| 07/01/1992 | CN1062438A Method and apparatus for controlling speed of motor |
| 06/30/1992 | US5126647 Pulse by pulse current limit and phase current monitor for a pulse width modulated inverter |
| 06/30/1992 | US5126642 Variable speed motor control |
| 06/23/1992 | US5124623 Speed control circuit for a servo motor |
| 06/22/1992 | CA2057791A1 Electrical motor position controller |
| 06/17/1992 | EP0489942A1 Device for regenerative braking of an electronic speed controlled ac motor |
| 06/10/1992 | EP0489273A2 Drive system for a water pump with rotatable sealing arrangement |
| 06/06/1992 | CA2056770A1 Drive system for a water pump with rotatable sealing arrangement |
| 06/03/1992 | EP0488350A2 Method of and device for driving and controlling a motor |
| 06/03/1992 | EP0447405A4 Control system for a motor |
| 06/02/1992 | CA1302483C Current control for microprocessor motor drive |
| 05/21/1992 | DE4032056C1 Determining slip frequency for control of asynchronous motor - calculating cross product of stator current voltage and frequency vectors to increase stator frequency bandwidth towards DC |
| 05/19/1992 | US5115175 Drill having alternate mode control |
| 05/19/1992 | US5113824 Adjusting device |
| 05/06/1992 | EP0484143A2 Capstan servo devices |
| 04/30/1992 | WO1992007130A1 Process for determining the load of an asynchronous motor fed via a frequency converter and a device for carrying out the process |
| 04/22/1992 | EP0481495A2 Port output controller for use in microcomputer |
| 04/14/1992 | US5105208 Image forming apparatus with good response motor servo control |
| 04/08/1992 | EP0227719B1 Video recorder |
| 03/31/1992 | US5101148 Electric motor actuator |
| 03/31/1992 | US5101145 Velocity proportional integral regulator with negative feedforward to control response of torque disturbances |
| 03/24/1992 | US5099197 Method of determining the rotational speed of a machine, and device for performing the method |
| 03/24/1992 | US5099185 Alternating current motor control method |
| 03/19/1992 | WO1992004763A1 System for driving induction motor |
| 03/19/1992 | WO1992004668A1 System for controlling servomotor |
| 03/18/1992 | EP0474888A1 Method of regulating gain of motor control |
| 03/17/1992 | US5097192 Controller of a synchronous motor |
| 03/17/1992 | CA1297527C Motor controller |
| 03/11/1992 | EP0474006A2 Method and device for the operation of a conche |