Patents
Sitemap › H02 - Generation, conversion, or distribution of electric power › H02P - Control or regulation of electric motors, generators, or dynamo-electric converters; Controlling transformers or reactors or choke coils › H02P 23 - Arrangements or methods for the control of ac-motors characterised by a control method other than vector control
Patents for H02P 23 - Arrangements or methods for the control of ac-motors characterised by a control method other than vector control (5,487)
11/1985
11/21/1985EP0161474A1 Process and device for the synchronized operation of an electric motor, in particular for driving a rotatable reflection element of an optical detection system
11/19/1985CA1196997A1 Apparatus for controlling the speed of a rotating body
11/12/1985CA1196681A1 Phase detector for three-phase power factor controller
11/05/1985CA1196374A1 Synchronous electric motor control systems
11/05/1985CA1196373A1 High torque servo positioner using 3 phase variable frequency constant torque controller
10/1985
10/23/1985EP0159000A2 Method and apparatus for controlling PWM inverters
10/23/1985EP0158886A1 A torsion angle detection circuit
10/15/1985CA1195376A1 Microprocessor controlled pulse motor
10/10/1985WO1985004535A1 Arrangement for the control or regulation of the rotation speed and/or the torque of an induction motor
10/08/1985US4545464 Apparatus for controlling an A-C power elevator
10/08/1985CA1194991A1 Control circuit for dc capstan motor
10/01/1985US4544873 Elevator polyphase motor control
10/01/1985CA1194626A1 Elevator motoring and regenerating dynamic gain compensation
10/01/1985CA1194545A1 Twelve pulse load commutated inverter drive system
09/1985
09/24/1985US4543520 Induction motor slip control
09/24/1985US4543518 Static traction/braking switch-over circuit for a variable speed system including an asynchronous motor powered by current switching
09/24/1985US4543517 Electronic position and velocity control system with cold start compensation
09/24/1985US4543516 Speed and phase control system
09/17/1985US4542324 Overtemperature speed control for a variable speed drive
09/10/1985US4540318 Rotary electrical tool with speed control, especially drill
08/1985
08/28/1985EP0152631A1 Arrangement for regulating the rpm and phase of a motor
08/27/1985US4538100 DC to AC inverter and motor control system
08/27/1985CA1192684A1 Ac elevator control apparatus
08/21/1985EP0152313A1 Device for correcting the displacement discrepancy of the wheels of a programmed mobile object
08/20/1985US4536806 Microprocessor controlled multiple servo system for a recording and/or reproducing apparatus
08/20/1985CA1192256A1 Control systems for ac induction motors
08/13/1985CA1191926A1 Overspeed/underspeed detector
08/06/1985US4533856 Submerged scraper conveyor automatic speed control
08/06/1985CA1191388A1 Printer control system with controlled acceleration and deceleration
08/06/1985CA1191387A1 Print head motor control system using analog and digital feedback
07/1985
07/30/1985US4532465 Electrotechnical device for regulating asynchronous rotating machines
07/30/1985US4532463 Method and apparatus for adjusting operation time of servosystem
07/30/1985US4532458 Variable-speed electrical machines
07/23/1985US4530134 Computerized control system for a carding machine
07/16/1985US4529920 Control apparatus for an automatic door with a minimum error in a detected door position
07/10/1985EP0147439A1 Variable slip drive system for induction motor
07/09/1985US4527663 Apparatus for controlling an AC power elevator
07/03/1985EP0146906A2 Speed and phase control system
06/1985
06/26/1985EP0145774A1 Electrical circuit for switching a multi-phase a.c. supply to a load
06/25/1985US4525660 Control apparatus for inverter
06/19/1985EP0145310A2 Motor servo circuit for a magnetic recording and reproducing apparatus
06/04/1985US4521894 Overspeed/underspeed detector
06/04/1985US4521724 Apparatus for processing energy regenerated by an AC motor
05/1985
05/29/1985EP0142744A1 Process and device for braking a motor provided with a braking device
05/28/1985US4520300 Brushless ultra-efficient regenerative servomechanism
05/22/1985EP0141859A1 Servo control circuit
05/14/1985US4517501 Rotation control system
05/08/1985EP0140424A1 Motor speed control arrangement
05/08/1985EP0140041A1 Synchronous machine having a voltage and speed superconductor regulator
05/08/1985EP0139869A1 Controlling system for a pole change electric motor
05/07/1985US4516222 Laminated magnetic bubble device
04/1985
04/30/1985US4514671 Head scanning servo system in a recording and/or reproducing apparatus
04/30/1985CA1186369A1 Simplified connections to control speed relating to electrical rotating machinery
04/17/1985EP0137156A1 Airflow control system
04/10/1985EP0136856A2 Controller for induction motors
04/09/1985CA1185317A1 Self generative variable speed induction motor drive
04/03/1985EP0135874A2 Control system for AC electric car
04/02/1985US4509004 Apparatus for variable speed drive of an induction motor from a fixed frequency AC source
03/1985
03/26/1985US4507592 Microprocessor controlled tape capstan
03/19/1985US4506312 Furan or tetrahydrofuran derivatives
03/19/1985US4506202 Digital servo circuit
03/19/1985US4506201 Microprocessor controlled pulse motor
02/1985
02/27/1985EP0133580A1 Permanent magnet synchronous motor control system
02/26/1985US4501343 Elevator car load and position dynamic gain compensation
02/19/1985US4500822 Digital capstan servo circuit
02/19/1985US4499986 Control apparatus for passenger conveyor
02/18/1985EP0118544A4 Improved induction motor controller.
02/12/1985US4499414 AC Motor control method
02/12/1985CA1182518A1 Motor power factor controller with a reduced voltage starter
02/12/1985CA1182514A1 Variable-speed electrical machines
02/05/1985US4498034 Motor speed control circuit
01/1985
01/29/1985US4496894 Arrangement for controllably driving an A.C. motor
01/29/1985CA1181799A1 Brushless motor controller
01/22/1985CA1181478A1 Digital speed control for a brushless dc motor
01/15/1985US4494204 Carding machine or roller card
01/15/1985US4494054 Electric power delivery system and method
01/08/1985US4492909 Device for controlling the drive of a stepping motor, to adjust the lateral stitch bight and/or the feed length of a sewing machine
01/08/1985CA1180750A1 Polyphase static inverter
01/03/1985WO1985000079A1 Electrical circuit for switching a multi-phase a.c. supply to a load
01/02/1985CA1180430A Electronic tractor control
01/01/1985US4491774 Control system for a radio-controlled door operator
12/1984
12/27/1984EP0128980A1 Drive mechanisms for machines
12/25/1984US4490796 Print head motor control system using analog and digital feedback
12/20/1984WO1984005000A1 Variable slip drive system for induction motor
12/19/1984EP0128182A1 Method and apparatus for automatically setting the demand phase lag input to an induction-motor power factor controller.
12/18/1984US4489267 Waveform synthesizer and motor controller
12/18/1984US4489260 Method of driving a stepping motor and a drive circuit thereof
12/11/1984US4488103 Motor control method and control apparatus therefor
12/11/1984US4488102 Electronic switch control method
12/05/1984EP0126779A1 Ac motor control system
12/05/1984EP0126778A1 Servomotor control system
12/04/1984US4486697 Reversing device for a two-pole single-phase synchronous motor
12/04/1984US4486692 DC Motor control circuit for drop-out of stopping pulses in recorder
12/04/1984CA1179010A1 Control system for ac induction motors
12/04/1984CA1179008A1 Control system for synchronous brushless motors
11/1984
11/27/1984US4485337 Servo data driven motor speed control
11/20/1984US4484235 Phase control circuit and magnetic reproducing apparatus using the same
11/20/1984US4484129 Speed control apparatus for polyphase induction motors
11/20/1984US4484126 Induction motor controller
11/20/1984US4484117 Microprocessor-based control apparatus for a direct current machine drive system
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