| Patents for H02P 6 - Arrangements for controlling synchronous motors or other dynamo-electric motors with electronic commutators in dependence on the rotor position; Electronic commutators therefor (19,185) |
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| 08/10/1993 | US5235264 Method of and circuit for starting sensorless motor |
| 08/10/1993 | US5235261 DC powered surgical handpiece having a motor control circuit |
| 08/04/1993 | EP0553354A1 Brushless DC motor without position sensor |
| 08/03/1993 | US5233275 Simplified sensorless DC motor commutation control circuit using analog timing techniques |
| 07/29/1993 | DE4132881A1 Brushless DC motor control circuit - has circuit for phase displacement of commutation times depending on motor speed using functional relationship |
| 07/28/1993 | EP0552232A1 An electric power train for vehicles. |
| 07/27/1993 | US5231338 Controlling a multiphase brushless motor without position sensors for the rotor, using a system of digital filtering |
| 07/21/1993 | EP0551562A2 Method for synchronising a display device having an electronically controlled stepper motor |
| 07/20/1993 | US5229693 Driving control apparatus for brushless motor with optimum controlled converter |
| 07/13/1993 | US5227704 Motor controls, refrigeration systems and methods of motor operation and control |
| 07/13/1993 | US5227702 Direct current motor utilizing back electromotive force |
| 07/06/1993 | US5225759 Starting and control method for brushless DC motor |
| 07/06/1993 | US5225746 Apparatus and method for controlling brushless electric motors |
| 06/30/1993 | EP0195782B1 Process for starting an electronically switched d.c. motor |
| 06/29/1993 | US5223775 Apparatus and related method to compensate for torque ripple in a permanent magnet electric motor |
| 06/29/1993 | US5223772 Method and apparatus for providing the lock of a phase-locked loop system from frequency sweep |
| 06/29/1993 | US5223771 Polyphase brushless DC Motor control |
| 06/29/1993 | US5223759 DC brushless motor with solid rotor having permanent magnet |
| 06/24/1993 | DE4142274A1 Supply circuitry for sync. motor from DC supply - connects stator to MOSFETs, with gates controlled by difference between motor current and commutation signals |
| 06/23/1993 | EP0548059A2 Brushless motors |
| 06/22/1993 | US5221881 Method and apparatus for operating polyphase DC motors |
| 06/15/1993 | US5220264 Control system for an AC servomotor having a permanent magnet type |
| 06/15/1993 | US5220259 Dc motor drive system and method |
| 06/15/1993 | US5220258 Drive circuit for a brushless direct-current motor |
| 06/15/1993 | US5220257 Motor torque control circuit with barking control and motor drive system using the same |
| 06/09/1993 | EP0544728A1 Generator for amplitude-coupled voltages. |
| 06/09/1993 | EP0437575B1 A method and a device for sensorless control of a reluctance motor |
| 06/02/1993 | EP0544628A2 Start-up procedure for a brushless, sensorless motor |
| 06/02/1993 | CN1021098C Circuit for actuating brushless direct-motor |
| 06/01/1993 | US5216557 Disk storage device having a brushless dc drive motor |
| 06/01/1993 | US5216343 Motor construction and method for limiting spin-up time in a hard disk drive |
| 05/25/1993 | US5214365 Three-phase reluctance type electric motor |
| 05/13/1993 | WO1993009595A1 Apparatus and related method to compensate for torque ripple in a permanent magnet electric motor |
| 05/11/1993 | US5210474 Digital-analog driver for brushless D.C. spindle motor |
| 05/05/1993 | EP0540417A1 Overload protection device for electronic commutated electric motor |
| 05/05/1993 | EP0539401A1 Process and circuit for the sensor-less detection of the angle of rotation in a synchronous machine without a damper and preferably excited by a permanent magnet and powered via a converter. |
| 05/04/1993 | US5208518 DC-DC boost converter for spindle motor control |
| 04/28/1993 | EP0539335A1 A linear feedback control circuit for a half-wave polyphase brushless motor |
| 04/28/1993 | EP0538387A1 Digital motor controller. |
| 04/27/1993 | US5206575 Device for controlling an AC motor |
| 04/27/1993 | US5206567 Apparatus for reliably activating sensorless and brushless DC motor |
| 04/21/1993 | EP0538204A1 A control circuit for a half-wave brushless motor with a surge limiter |
| 04/20/1993 | US5204593 Drive system for information recording/reproducing apparatus |
| 04/14/1993 | EP0536991A1 Method and apparatus for resynchronizing a moving rotor of a polyphase DC motor |
| 04/14/1993 | EP0536113A1 Motor or position transducer. |
| 04/13/1993 | US5202616 Bipolar or unipolar drive back-EMF commutation sensing method |
| 04/13/1993 | US5202614 Self-commutating, back-emf sensing, brushless dc motor controller |
| 04/13/1993 | US5202613 Two-phase brushless DC motor controller |
| 04/13/1993 | US5202612 Concrete vibrator |
| 04/13/1993 | US5202610 Method and apparatus for yarn end-down detection in a textile yarn winding machine |
| 04/07/1993 | EP0535916A2 Inductor current-sensing circuitry |
| 04/06/1993 | US5200682 Motor current phase delay compensating method and apparatus thereof |
| 04/06/1993 | US5200675 Commutation circuit for a brushless d.c. motor |
| 04/04/1993 | CA2079397A1 Dc motor drive system and method |
| 04/01/1993 | WO1993006598A1 Recorder with drive phase detector |
| 03/31/1993 | EP0534447A1 D.C. fan control circuit for linearly variable cooling |
| 03/31/1993 | EP0533767A1 Direct current motor utilizing back electromotive force. |
| 03/31/1993 | CN1070505A Recorder with drive phase detector |
| 03/30/1993 | US5198738 Method of determining the rotational speed of a brushless dc-motor |
| 03/30/1993 | US5198733 Starting a brushless DC motor |
| 03/25/1993 | DE4131278A1 Recorder mit antriebs-phasendetektor Recorder with Drive-phase detector |
| 03/24/1993 | EP0533413A1 Discrete position estimator for a switched reluctance machine using a flux-current map comparator |
| 03/24/1993 | EP0533296A1 Control device for a DC motor |
| 03/24/1993 | EP0533061A1 Easily started DC motor apparatus |
| 03/23/1993 | US5196775 Switched reluctance motor position by resonant signal injection |
| 03/23/1993 | US5196771 Brushless motor drive circuit |
| 03/18/1993 | WO1993005564A1 Improved apparatus for commutation of an electric motor |
| 03/18/1993 | WO1993005216A1 Improved motor-driven spindle assembly for ring spinning |
| 03/18/1993 | WO1993004970A1 Method and apparatus for yarn end-down detection in a textile yarn winding machine |
| 03/17/1993 | EP0532350A1 Lock detector for switched reluctance machine rotor position estimator |
| 03/17/1993 | EP0282598B1 Dc motor drive system |
| 03/16/1993 | US5194795 Drive system and a control unit therefor |
| 03/16/1993 | US5194794 Electric control apparatus for brushless motor |
| 03/16/1993 | US5194787 Control circuit for an electric motor without a collector |
| 03/16/1993 | US5194786 Linear current source amplifier for brushless dc motor |
| 03/14/1993 | CA2076108A1 Lock detector for switched reluctance machine rotor position estimator |
| 03/14/1993 | CA2076080A1 Discrete position estimator for a switched reluctance machine using a flux-current map comparator |
| 03/10/1993 | EP0531200A2 Power unit for motor vehicles |
| 03/09/1993 | US5193146 Pulse width modulation control sytem for a motor |
| 03/09/1993 | US5192900 Method and apparatus for driving a brushless motor using feedback control |
| 03/02/1993 | US5191618 Rotary low-frequency sound reproducing apparatus and method |
| 03/02/1993 | US5191270 Method for starting a motor |
| 03/02/1993 | US5191269 Brushless direct current motor with minimized current ripple and method |
| 02/23/1993 | US5189349 Drive circuit for multi-phase brushless DC motor including drive current detector |
| 02/18/1993 | WO1993003539A1 Method and apparatus for commutation of a brushless dc motor |
| 02/16/1993 | US5187417 Motor control apparatus and method |
| 02/10/1993 | EP0526660A1 Apparatus for controlling load numerically |
| 02/09/1993 | CA1313550C Electrically commutated, variable speed compressor control system |
| 02/03/1993 | EP0525999A2 Synchronous rectification method for reducing power dissipation in motor drivers in PWM mode |
| 02/02/1993 | US5184056 Method of regulating the torque response of a multiphase electronically commutated electric motor |
| 01/28/1993 | DE4218674A1 Electronic index pulse generation system for floppy disc drive - has printed circuit motor with built-in incremental magnetic sensing system to generate pulses as disc rotates that are used to derive index signal |
| 01/26/1993 | US5182500 Brushless motor control circuit |
| 01/26/1993 | US5182499 Sensorless brushless motor |
| 01/21/1993 | WO1993001651A1 Process for operating a speed controlled motor |
| 01/19/1993 | US5180960 Circuit arrangement for commutating a reluctance motor |
| 01/13/1993 | EP0522819A2 Drive system for turbocharger with rotary electric machine |
| 01/13/1993 | EP0522657A1 Control circuit for a direct current/three-phase current converter |
| 01/13/1993 | EP0522179A1 High speed dc motor |
| 01/12/1993 | US5179307 Direct current brushless motor |
| 01/10/1993 | CA2073469A1 Control circuit for a direct current/three-phase current converter |