Patents for H02P 8 - Arrangements for controlling dynamo-electric motors rotating step by step (4,097)
01/1988
01/05/1988US4717866 Stepping motor excitation sequences
12/1987
12/29/1987US4715725 Step motor control mechanism for electronic timepiece
12/23/1987EP0249995A1 Head positioning system for floppy disk drives
12/22/1987US4714867 Method and apparatus for controlling a stepper motor with a programmable parabolic velocity profile
12/22/1987US4714849 Linear stepping motor
12/22/1987US4714361 Stepper motor homing method and system
12/02/1987EP0247338A2 Mechanism for positioning an output member
12/01/1987US4710691 Process and apparatus for characterizing and controlling a synchronous motor in microstepper mode
12/01/1987US4710690 Closed-loop control system for a stepping motor
11/1987
11/24/1987US4709199 Velocity feedback control of step motors
11/17/1987US4707649 Motor controlling system
11/17/1987US4706456 Method and apparatus for controlling hydraulic systems
11/10/1987US4706008 Self-adjusting homing for a stepping motor
11/05/1987DE3614650A1 Stepping motor control
11/04/1987EP0244150A2 Stepping motor excitation sequences
11/03/1987US4704698 Method for the synchronization of a moveable material web and an optical deflection path
10/1987
10/28/1987EP0243232A1 Device for driving a mobile
10/28/1987EP0242673A2 Microstepping motor harmonic suppression
10/27/1987US4703244 Pulse motor control apparatus
10/27/1987US4703243 Stepping motor harmonic suppression
10/27/1987US4702613 Electronic timepiece driven by a plurality of stepping motors and powered by a solar cell
10/22/1987DE3704765A1 Torque control for stepping motors
10/21/1987EP0242344A1 Method and apparatus for controlling a motor
10/21/1987EP0242039A2 Adaptive controller for a motor vehicle engine throttle operator
10/20/1987US4701687 Controller for energization of a stepper motor
10/13/1987US4700120 Control for a stepper motor or other synchronous motor
09/1987
09/29/1987US4697129 Stepping motor drive system and method capable of stopping the rotor in a required angular position
09/24/1987WO1987005755A1 Device for detecting the rotational position of rotor of motor
09/23/1987EP0237778A2 Pulse motor and driving method thereof
09/16/1987EP0237328A2 Stepper motor homing method and system
09/08/1987US4692679 Pulse motor
09/08/1987US4692674 Brushless DC motor control system responsive to control signals generated by a computer or the like
09/02/1987EP0234614A1 Device for controlling a circuit through an impedance
09/02/1987EP0234264A1 Control circuit for an electric step-motor
09/01/1987US4691154 Stepping motor control system
09/01/1987US4691153 Method of controlling positioning of rotor of stepping motor
09/01/1987CA1226354A1 Stepper motor door control apparatus and method
08/1987
08/25/1987US4689541 Method and apparatus for controlling multiple motors
08/18/1987US4687981 Stepping motor
08/04/1987US4684866 Adaptive controller for a motor vehicle engine throttle operator
08/04/1987US4684865 Method and device for controlling the acceleration of an electric stepping motor
08/04/1987US4684864 Driving circuit of stepping motor for floppy disk drive
08/04/1987US4684860 Electric motor drive equipped with a permanently magnetized rotor
08/04/1987US4684855 Permanent magnet direct current motor apparatus
07/1987
07/29/1987EP0230134A2 System for driving drum
07/28/1987US4683504 Apparatus for recording and reading binary information on a magnetic disc
07/28/1987US4683428 Method of and a device for identifying the position of the rotor of a stepping motor
07/28/1987US4683410 Method for detecting step losses in stepping-motor-driven adjusting devices
07/28/1987US4683409 Stabilizing arrangement for a stepping motor
07/28/1987US4683408 Stepping motor control apparatus
07/21/1987US4682093 Power supply systems for inductive elements
07/21/1987US4682092 Synchronous motor drive with chopper regulator
07/15/1987EP0228475A1 Process and circuit arrangement controlling a stepping motor
07/14/1987US4680524 Mechanism for positioning an output member
07/14/1987US4680514 Motor
07/07/1987US4678979 Apparatus for controlling the carriage of a printer
07/01/1987EP0226870A2 Power supply/sink for use with switched inductive loads
06/1987
06/30/1987US4677359 Stepping motor drive method and system capable of stopping the rotor in a required angular position
06/30/1987US4677358 Stepping motor drive controlling circuit
06/30/1987CA1223632A1 Electromagnetic actuator system
06/23/1987US4675590 Stepping motor driver with mid-frequency stability control
06/23/1987US4675564 Permanent magnet type stepping motor
06/17/1987CN86108546A Step motors
06/16/1987US4673857 Method for driving a turn detector circuit which detects the turn of a step motor
06/16/1987US4673856 Stepping motor drive circuit
06/16/1987US4673855 Restraining the instability of a stepper motor
06/09/1987US4672283 Control circuit for stepping motor
06/09/1987US4672282 Stepping motor control circuit
05/1987
05/27/1987EP0223611A2 Method for mapping around defective sectors in a disc drive
05/06/1987EP0220814A2 Means and method for stepping motor stabilization
05/05/1987US4663577 Driving circuit for multi-phase stepping motor
04/1987
04/28/1987US4661882 Power supply/sink for use with switched inductive loads
04/28/1987US4661755 Stepping motor control apparatus
04/28/1987US4661754 Control circuit for a stepping motor
04/28/1987CA1221016A1 Dosage and distribution device of a pressurized gas among n outlets
04/23/1987DE3537113A1 Method of controlling a motor for continuously moving a printing carriage in typewriters or office machines
04/21/1987CA1220817A1 Method of analysing the voltage induced in an exciter coil of a stepping motor
04/14/1987US4658194 Closed loop control circuitry for step motors
04/09/1987DE3535666A1 Device for setting a switch to a zero-position bit pattern of a stepping motor
04/08/1987CN85107179A Stepping motor control apparatus
04/02/1987DE3534601A1 Circuit arrangement for driving a stepping motor
04/01/1987EP0216733A2 Modifications of a self- synchronous motor for step-by-step driving
03/1987
03/24/1987US4652806 Micro-stepping translator controller
03/17/1987US4651076 Power maximizing circuit for stepper motors
03/03/1987US4648026 Microprocessor stepper motor drive
03/03/1987US4647889 Rotary control having variable detents
03/03/1987US4647829 Means and method for stepping motor stabilization
02/1987
02/24/1987US4646223 Drive control system for electric equipment
02/10/1987US4642544 Control circuit for driving step motor
02/03/1987US4641073 Stepper motor control system
01/1987
01/20/1987US4638235 Motor driving apparatus
01/15/1987DE3523806A1 Method for driving a 5-phase stepping motor
01/14/1987EP0208125A1 Automatic tool exchange system for machine tools
01/14/1987EP0208124A2 Improvement in stepper motors
01/14/1987EP0208123A1 Printed-circuit motor
01/13/1987US4636884 Head positioning control system in magnetic disk device of index servo system
01/07/1987EP0207298A1 Stepper motor
01/07/1987CN86202585U Chopper type constant-current driving mechanism for stepper motor
01/06/1987US4634949 Control devices for use with a stepping motor
01/06/1987US4634948 Stepping motor winding for bipolar drive
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