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 8 - Arrangements for controlling dynamo-electric motors rotating step by step
Patents for H02P 8 - Arrangements for controlling dynamo-electric motors rotating step by step (4,097)
05/1983
05/25/1983EP0079451A1 A method of testing stepping motors
05/17/1983US4384334 Apparatus for driving pulse motors for automatically adjusting external circuits
05/10/1983US4383209 Control system for transducer positioning motor
05/10/1983US4382693 Single phase bipolar stepping motor having two rotation senses
05/10/1983US4382691 Electronic watch
05/03/1983USRE31229 Stepping motor control
04/1983
04/26/1983US4381481 Control circuit for a stepping motor in battery-operated instruments
04/26/1983CA1145440A1 Method and apparatus to control a stepping motor through a finite series of impulses
04/26/1983CA1145389A2 Controller for variable reluctance stepper motor
04/20/1983EP0077293A1 Process and device for controlling a stepping motor in a clock mechanism
04/20/1983EP0077094A1 Device for controlling a stepping motor
04/19/1983US4380722 Accommodation circuit for a step motor
04/13/1983EP0076780A1 Process for reducing the consumption of a stepping motor, and device to carry out this process
03/1983
03/31/1983WO1983001156A1 Electric driving device and machine
03/29/1983CA1143833A1 Stepping motor excitation circuitry
03/23/1983EP0074767A2 Improvements in or relating to linear motor and control circuitry therefor
03/22/1983US4377847 Microprocessor controlled micro-stepping chart drive
03/08/1983US4376262 Method and apparatus for controlling a digital controlled brushless motor
03/08/1983CA1142582A1 Control system for stepping motors, a method of operating stepping motors, and a method for selecting current patterns for stepping motors
02/1983
02/22/1983US4375049 Stepping motor drive circuit for bi-directional rotation
02/22/1983US4375048 Programmable time switch
02/17/1983WO1983000571A1 Adaptive pulsing motor control for positioning system
02/16/1983EP0071642A1 Microprocessor controlled micro-stepping chart drive
02/01/1983US4371822 Control device for pulse motors, having a fail safe function
01/1983
01/25/1983US4370065 Step motor control mechanism for electronic timepiece
01/18/1983US4368990 Electronic timepiece
01/11/1983US4368414 Pulse motor driving device of sewing machines
01/05/1983EP0068802A1 Method of, and apparatus for damping of stepper motor using non-active windings
01/05/1983EP0068306A1 Step motor drive circuit
01/04/1983US4367435 Motor control system
01/04/1983US4367049 Driving device especially for a timepiece
01/04/1983CA1138926A1 Encoder for monitoring bidirectional motion
12/1982
12/08/1982EP0066159A1 Incremental motion motor control system
12/07/1982US4362981 Driving circuit for a stepping motor
11/1982
11/30/1982US4361410 Drive system for pulse motor
11/16/1982CA1135788A1 Electronically commutating motor
11/10/1982EP0064391A1 Method and apparatus for controlling a stepper motor
11/10/1982EP0064387A1 Electric indexing drive and stepping motor therefor
11/09/1982US4358725 Stepper motor control circuit
10/1982
10/13/1982EP0062273A1 Method of controlling a stepping motor
10/12/1982US4353655 Electronic typewriter and its control apparatus
10/05/1982US4353021 Control circuit for a pulse motor
10/05/1982CA1133048A1 System and method of minimizing velocity fluctuations in a synchronous motor shaft
09/1982
09/28/1982US4352172 Detection device of electronic timepiece
09/22/1982EP0060806A1 Method of reducing the power consumption of a stepping motor, and device for carrying out this method
09/21/1982US4350943 Amplifier for inductive loads with corrective current sensing
09/15/1982EP0059969A1 Voltage source with current limitation for stepping motors controlled by a constant current
09/08/1982EP0059326A1 A stepper motor drive circuit for synchronous switching of core winding
09/07/1982US4348605 Electrical reluctance machine
09/07/1982US4348276 Automatic testing apparatus for automatically testing a printed circuit board
09/02/1982WO1982002962A1 Microprocessor controlled micro-stepping chart drive
08/1982
08/24/1982US4346463 Movement detector for a stepping motor
08/17/1982US4344678 Diaphragm control device for camera
08/11/1982EP0057663A2 Control device for stepping motor
08/11/1982EP0057378A1 Control circuit for a step motor
07/1982
07/20/1982US4340946 Electronic timepiece
07/20/1982US4340848 Apparatus for controlling the pulse period of pulses applied to a pulse motor
07/20/1982CA1128146A2 Stepping motor control circuit
07/13/1982US4339702 Stepping motor drive apparatus
07/13/1982US4339701 Switching frequency stabilization and load fault detection in switching amplifiers
06/1982
06/30/1982EP0054826A1 Step motor control circuit
06/29/1982US4337428 Deceleration initiation circuit for a stepper motor
06/24/1982WO1982002127A1 Motor control system
06/22/1982US4336484 Motor control
06/16/1982EP0053684A2 Stepper motor drive apparatus and printer embodying the same
06/01/1982US4333045 Acceleration shaping circuit for a stepper motor
05/1982
05/25/1982CA1124319A1 Chopping power supply for a bifilar stepping motor
05/25/1982CA1124318A1 Power chopper supply for a bifilar wound stepping motor
05/11/1982US4329635 Stepper motor damping circuit
05/11/1982US4329601 Stepping motor
05/04/1982US4328507 Recording apparatus
04/1982
04/21/1982EP0049948A2 Control system for transducer positioning motor
04/20/1982US4326278 Electronic timepiece
04/07/1982EP0048806A1 Stepper motor load tuning
04/06/1982US4323834 Movement detector for a stepping motor
04/06/1982CA1121510A1 Variable reluctance stepper motor drive and method of operation as a dc brushless motor
04/06/1982CA1121445A1 Stepper motor with analog positioning
03/1982
03/31/1982EP0048405A2 Step motor driving circuit
03/23/1982US4321521 Detection device of electronic timepiece
03/23/1982US4321520 Electronic timepiece
03/23/1982US4321519 Magnetic field detection device for electronic timepiece
03/23/1982US4321518 Inductor type synchronous motor driving system for minute control of the position and the rotation angle of the motor
03/23/1982US4320812 Flow control system for use in power steering apparatus
03/16/1982US4320330 Apparatus and method for determining step motor drive pulse timing by rotor displacement
03/09/1982US4319175 Stabilized stepping-motor system
03/09/1982US4319174 Stepper motor drive system
03/09/1982US4318625 Stepper motor load tuning
03/03/1982EP0046722A2 Stepper motor motion sensor
02/1982
02/05/1982EP0036424A4 Circuit arrangement for an asynchronous motor drive with variable speed.
01/1982
01/20/1982EP0044290A2 Circuit for influencing the commutation in stepper motors
01/19/1982US4312059 Electronic timepiece
01/19/1982US4312058 Electronic watch
12/1981
12/15/1981US4306181 Drive circuitry for electric motor
12/15/1981CA1114445A1 Control system for inductively controlled multiphase motor
12/08/1981US4305029 Positioning control apparatus
12/01/1981US4303871 Nutating motor current control
11/1981
11/24/1981US4302712 Method of minimizing resonance in stepping motor and improved driver therefor
11/17/1981CA1112717A1 Stepper motor drive apparatus
11/10/1981US4300223 System for making-up steps lost by the motor of a time-piece
11/10/1981US4299459 Diaphragm control circuit for camera
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