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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12/07/1989 | DE3819062A1 Method for controlling brushless electric motors and control circuit therefor |
12/06/1989 | EP0345150A1 Electric motor with electronic commutation, particularly for driving a fluid displacement machine, in particular a hair dryer equipped with such a motor |
11/30/1989 | WO1989011523A2 Rotor position sensing |
11/29/1989 | EP0343481A2 Device and method for controlling brushless four-phase DC motors |
11/29/1989 | EP0343363A2 Motor control system |
11/28/1989 | US4884016 Closed loop torque angle control of synchronous motor |
11/21/1989 | US4882524 Multi-phase bipolar brushless D.C. motor |
11/21/1989 | US4882523 Direct current motor commutation control |
11/21/1989 | US4882511 Brushless three-phase D.C. motor |
11/16/1989 | WO1989011148A2 Tape drive machines |
11/14/1989 | US4880474 Method and apparatus for operating vacuum cleaner |
11/07/1989 | US4879502 Speed control apparatus and method for motors |
11/07/1989 | US4879498 DC motor drive system for reducing start-up current |
11/07/1989 | US4879497 Method and device for measuring the temperature of a brushless d-c motor |
10/25/1989 | EP0338267A2 D. C. motor |
10/24/1989 | US4876491 Method and apparatus for brushless DC motor speed control |
10/17/1989 | US4874993 Sensorless brushless motor |
10/11/1989 | EP0215827B1 Circuit for controlling a brushless electric motor |
10/10/1989 | US4873477 Driving circuit for actuator |
10/04/1989 | EP0335580A2 Phase and frequency locked motor control system and method of motor control |
09/26/1989 | US4870332 Voltage-boosting motor controller |
09/26/1989 | CA1260056A1 Current sense demodulator |
09/21/1989 | WO1989008951A1 Electronic control circuits, electronically commutated motor systems, switching regulator power supplies, and methods |
09/21/1989 | WO1989008945A1 Supersonic motor with magnetic encoder |
09/19/1989 | US4868485 Three-phase current output circuit with temperature compensating function |
09/19/1989 | US4868478 Motor energizing circuit |
09/19/1989 | US4868467 Self-calibrating scanner motor driver apparatus and method |
09/19/1989 | CA1259653A1 Variable speed variable reluctance electrical machines |
09/13/1989 | EP0332099A2 Control circuit for spindle motor |
09/13/1989 | EP0332057A1 Circuitry for driving an electronically commutated DC motor |
09/05/1989 | US4864199 Electronically controlled electric motor with variable power output |
09/05/1989 | US4864198 Method of and apparatus for driving three-phase D.C. brushless motor |
08/29/1989 | US4862045 Method and apparatus for controlling the number of revolutions of a rotor |
08/22/1989 | US4860231 Calibration technique for variable speed motors |
08/22/1989 | US4859921 Electronic control circuits, electronically commutated motor systems, switching regulator power supplies, and methods |
08/15/1989 | US4857814 Electronic motor controls, laundry machines including such controls and/or methods of operating such controls |
08/10/1989 | DE3901893A1 Concrete vibrator |
08/08/1989 | US4855629 DC brushless motor with three teeth and two windings |
07/19/1989 | EP0324396A2 Method to commutate the coil strand of a DC motor |
07/12/1989 | EP0323860A2 Driving and positioning system |
07/11/1989 | US4847555 Device for detecting rotational speed of a motor using first and second sensors and a switching unit to select between the two sensors |
07/11/1989 | US4847540 Circuit for controlling the switching of a motor and application to the variation of speed of the control circuit |
07/05/1989 | EP0322804A1 Air conditioner equipped with scroll type compressor |
07/04/1989 | US4845412 Speed control apparatus for motor |
07/04/1989 | US4845411 Brushless DC motor and encoding technique |
06/28/1989 | EP0321564A1 Rectifier-type electric drive |
06/27/1989 | US4843288 Phase locked motor control system for multiple disk drive units |
06/20/1989 | US4841207 Pulse width modulated control method and means |
06/20/1989 | CA1256153A1 Drive and positioning system |
06/20/1989 | CA1256152A1 Three-phase brushless motor |
06/07/1989 | EP0318938A2 Motor control arrangement |
06/06/1989 | US4835839 Method of fabricating a salient pole electronically commutated motor |
06/01/1989 | WO1989005061A1 Device for driving brushless motor |
05/30/1989 | US4835448 Brushless DC motor torque control |
05/24/1989 | EP0316716A2 Direct current brushless motor for motor fans, pumps and similar equipments |
05/23/1989 | US4833387 Control circuit for running a polyphase synchronous motor in a d-c voltage network |
05/23/1989 | US4833374 Control circuit for brushless electric motor |
05/23/1989 | US4832576 Electric fan |
05/17/1989 | EP0316077A1 Brushless motors |
05/10/1989 | EP0314793A1 Rectifier type electric drive |
05/10/1989 | EP0314787A1 Two-phase rectifier electric motor |
05/03/1989 | EP0313929A1 Method to avoid current drop in a strand, not involved in commutation of a three phase synchronous machine with current block supply and circuit to execute the method |
05/03/1989 | DE3734938A1 Sensor unit, particularly for operating electrically commutated synchronous electric motors in servo control loops |
05/02/1989 | US4827203 Rotor rotational position detector for a motor |
05/02/1989 | US4827196 Motor control arrangement |
05/02/1989 | US4827158 Output circuit used in an output stage where large current and large output amplitude are required |
04/26/1989 | EP0313046A1 Motor control apparatus |
04/26/1989 | CN1004041B Brushless dc motor |
04/26/1989 | CN1004040B Driving circuit for brushless dc motors |
04/13/1989 | DE3732956A1 Arrangement for operating a synchronous motor on a DC voltage network |
04/04/1989 | US4818922 Optical commutation for permanent magnet motors |
04/04/1989 | US4818908 Brushless motor having phase advance |
03/29/1989 | EP0308577A2 12-step commutation device for an electric motor |
03/22/1989 | EP0308126A2 A drive circuit for an actuator |
03/21/1989 | US4814677 Field orientation control of a permanent magnet motor |
03/21/1989 | US4814676 Self-starting brushless D.C. motor |
03/21/1989 | US4814675 Device limiting the power supply current for a direct current motor equipped with such a device |
03/21/1989 | US4814674 Control circuit for a brushless DC motor |
03/09/1989 | WO1989002186A1 Device for driving a brushless motor |
02/28/1989 | US4808902 Control apparatus for brush-less motor |
02/28/1989 | US4808893 Method of controlling a brushless D.C. motor |
02/21/1989 | US4806832 Fan with temperature controlled rotation speed |
02/15/1989 | EP0303213A2 Circuit arrangement for the speed regulation of an electronic commutated d.c. motor |
02/14/1989 | US4804892 Collectorless direct current motor, driver circuit for a drive and method of operating a collectorless direct current motor |
02/07/1989 | USRE32857 Brushless tachometer/synchro |
02/07/1989 | US4803408 Brushless DC motor system with optically scannable member for commutation |
02/01/1989 | EP0301366A2 Method for controlling the coil commutation of a D.C. motor |
01/26/1989 | EP0281616A4 Servo-system. |
01/26/1989 | DE3723612A1 Control circuit for a brushless motor |
01/25/1989 | EP0299956A1 Circuit for operating a multiphase synchronous motor on a d.c. network. |
01/18/1989 | EP0299089A1 Speed controller |
01/03/1989 | US4795953 Method of and electronic circuit for starting a reluctance motor and reluctance motor provided with such an electronic circuit |
12/28/1988 | EP0296699A2 Computer-based control system especially for a motor |
12/22/1988 | DE3817870A1 Driver circuit for a commutatorless D.C. motor |
12/21/1988 | EP0295710A1 Driving apparatus for brush-less motor |
12/14/1988 | CN88103187A Control apparatus for brush-less motor |
12/07/1988 | CN87104305A Electric signal transmission system |
12/06/1988 | US4789812 Device for controlling a motor for rotating a magnetic disc |
11/30/1988 | EP0292926A2 Rotor speed control method |
11/17/1988 | WO1988009082A1 Rectifier type electric drive |