Patents for H02P 7 - Arrangements for regulating or controlling the speed or torque of electric dc-motors (10,217)
09/1986
09/30/1986US4614903 Windshield wiper speed control arrangement
09/30/1986US4614902 Closure retention apparatus for automatic doors
09/30/1986US4614901 Servo power amplifier having load equalization
09/24/1986CN86101236A Control arrangement for induction motor and method thereof
09/17/1986EP0074385B1 Voltage regulator in motor control
09/17/1986CN85101987A Magnetic-shunt regulating structure of a.c. torque motor
09/09/1986US4611153 Chopper frequency determination apparatus
08/1986
08/28/1986WO1986005042A1 Revolution number control apparatus for motors
08/27/1986CN85100971A Speed overlapping control method
08/12/1986US4605885 Method of controlling rotation speed of motor
08/12/1986US4605884 Control unit
07/1986
07/30/1986EP0188839A1 Self-oscillating power-supply circuit
07/30/1986EP0188576A1 Orbital shaker.
07/23/1986CN86100410A Self-oscillating power-supply circuit
07/15/1986US4600983 Digital current regulator circuit for control of bidirectional current flow through a load
07/08/1986US4599548 PWM controller for an electrical load
07/08/1986US4599545 Servomotor controller
07/02/1986EP0186596A1 Linear displacement control system comprising a DC motor
07/02/1986EP0186282A1 Apparatus for driving a vehicle window
07/01/1986US4598238 Electro-mechanical shower oscillator for papermaking machine
06/1986
06/25/1986EP0185449A1 Control apparatus for a vehicle window motor
06/25/1986EP0185238A1 Driving device for a switch
06/11/1986EP0184059A1 Driving device for a switch
06/10/1986CA1205888A1 Electric car control system
06/10/1986CA1205855A1 Turn-off control means for an ac-to-dc electric power converter
06/03/1986CA1205518A1 Multiple chopper speed control system for compound motor
05/1986
05/28/1986EP0182201A1 Speed control apparatus for a DC motor
05/27/1986US4591769 Arrangement for controlling the speed of a DC motor
05/27/1986US4591768 Control system for an electric motor
05/27/1986US4591767 Control system for reciprocating drive motor
05/20/1986US4589827 Electric motor fan
05/13/1986US4588934 Automobile fan control with non-periodic fluctuation signal generator
04/1986
04/30/1986EP0179219A2 Method and apparatus for producing a time-varying position control voltage
04/29/1986US4586123 Digital control system for the speed of a sewing machine
04/22/1986US4584636 AC-to-DC power converter with improved power factor and overvoltage suppression
04/22/1986US4584504 Integrated circuit for driving a D.C. motor having operational modes
04/22/1986US4583709 Valves
04/16/1986EP0177770A1 Driving system for electric driven vehicles
04/16/1986EP0177683A2 Speed control method for DC motors
04/15/1986US4583029 Variable speed resistive network for a pneumatic servo assembly of an electro-pneumatic converter
04/09/1986EP0177056A2 Postage meter apparatus and process employing computer controlled D.C. motor for indexing postage value changing means
04/09/1986EP0177048A2 Apparatus and process employing microprocessor controlled D.C. motor for controlling a load
04/08/1986US4581565 H-bridge power amplifier and method for controlling the same
04/01/1986US4580084 Method and system for controlling speed of electric motor
04/01/1986US4580083 Chopper controller for a D.C. motor
03/1986
03/25/1986US4578652 Broadband four-port TEM mode 180° printed circuit microwave hybrid
03/25/1986US4578626 Electrical control arrangement for a rolling mill drive motor of a rolling mill
03/25/1986US4578621 Stock advancing apparatus with dancer operated potentiometer speed control
03/11/1986US4575662 Vehicle power window control circuit
03/05/1986EP0173595A1 Method and apparatus to determine a synchronization signal taking the voltage phases of an electric network as a basis
03/05/1986EP0173077A2 AC supply device to actuate and to brake a DC train drive in a regenerator mode
02/1986
02/25/1986CA1201162A1 Motor torque control with improved linearity
02/25/1986CA1201159A1 System for supression of underdamped oscillations in a.c. power drawn by synchronous motors driving ward leonard generators
02/18/1986US4571668 Apparatus and method for controlling a thyristor converter in response to change in mode of load current
02/13/1986WO1986000995A1 Orbital shaker
02/12/1986EP0170829A1 Inverter-fed drive for a lift
02/11/1986US4570211 Power supply circuit for driving a motor
02/11/1986US4570111 Firing angle control system
02/04/1986US4568864 Electric motor control for a pipe bender
01/1986
01/28/1986US4567408 Digitally controlled rectifying system for driving a motor
01/22/1986EP0168502A1 Reel tension controlling method and apparatus
01/21/1986US4565953 Twelve pulse AC motor drive
01/21/1986US4565952 Speed controlling device for rolling mills
01/21/1986US4565951 Process and electronic device for the control and regulation of the supply current in an electric motor fed from a fixed voltage direct current source
01/21/1986CA1199675A1 Speed controller for mill drives and the like
01/15/1986EP0168163A1 Electro-pneumatic converter
01/08/1986EP0166744A1 A programmed microprocessor for a speed control system for a d.c. motor.
01/07/1986US4563623 Motor speed control apparatus
01/02/1986EP0166501A2 Turbo with pulse width modulated control method and means
12/1985
12/31/1985US4562393 Modulation scheme for PWM-type amplifiers or motors
12/31/1985US4562390 Insulation resistance measurement in static leonard apparatus
12/31/1985US4562387 Vehicle power window control
12/31/1985US4561677 Passive seat belt device
12/10/1985US4558265 Method and apparatus for position control of an electric motor
12/04/1985EP0163456A2 Control system
12/03/1985US4556830 Speed controller for mill drives and the like
11/1985
11/27/1985EP0162423A2 Device for speed regulation
11/26/1985US4555652 Control circuit for operating a direct current motor during traction or braking
11/26/1985CA1197282A1 Proportional plus integral speed control
11/21/1985EP0161646A1 Electric motor with variable speed
11/21/1985EP0161358A1 Control system for DC motors
11/21/1985EP0161301A1 Series transistor chopper
11/19/1985US4554499 Computer controlled motor
11/19/1985US4554492 Motor control system
11/13/1985EP0160896A2 Current flow reversing circuit
11/12/1985CA1196679A1 Vehicule propulsion motor control apparatus
11/05/1985US4551659 Trackside-controlled electric railway systems
11/05/1985US4550992 Motor drive control circuit
10/1985
10/22/1985US4549122 Method and circuit for DC motor field regulation with speed feedback
10/10/1985WO1985004534A1 Speed control system
10/10/1985CN85100999A Speed regulating method using tapped-winding and tapped-winding electric motors and switches
10/08/1985US4546424 Compensated ramp generating circuit for controlling SCR firing
10/08/1985US4546304 Electronic device with choke inverter
10/08/1985CA1194991A1 Control circuit for dc capstan motor
10/08/1985CA1194931A1 Power converter apparatus
10/01/1985US4545004 Bridge driver circuit for a DC electric motor
10/01/1985US4544869 Electronic control circuit for bi-directional motion
10/01/1985US4544866 Remote window operating system
10/01/1985US4544865 For a direct current permanent magnet motor
09/1985
09/17/1985CA1193650A1 Extended range speed control for dc drive