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Class Information
Number: 318/696
Name: Electricity: motive power systems > Open-loop stepping motor control systems
Description: Subject matter in which a rotary electric motor; of the type in which the rotary element tends to assume a predetermined angular position when the motor is continuously energized; indexes in discrete angular increments of essentially uniform magnitude as a function of pulse inputs derived from outside the motor.










Patents under this class:
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Patent Number Title Of Patent Date Issued
5231343 Driving apparatus for stepping motor capable of restraining motor noise Jul. 27, 1993
5227709 Closed loop single step response by open winding voltage feedback system and method for multiple phase step motors Jul. 13, 1993
5225756 Stepper motor driver circuit Jul. 6, 1993
5225757 Methods for deriving and implementing motion profiles for drive systems Jul. 6, 1993
5225759 Starting and control method for brushless DC motor Jul. 6, 1993
5216345 Mixed mode stepper motor controller and method Jun. 1, 1993
5216346 Waveform processing circuit for pulse generator Jun. 1, 1993
5216347 Stepper motor control system Jun. 1, 1993
5216348 Method of controlling a stepping motor and drive circuit employing the same Jun. 1, 1993
5216533 Motor motion detection circuit Jun. 1, 1993
5212434 Phase-locked step motor speed servo controller May. 18, 1993
5208523 Stepper motor with vernier control mode May. 4, 1993
5206568 Coordinated control of stepper motors Apr. 27, 1993
5206571 Stepper motor controllers Apr. 27, 1993
5198741 Drive control system of stepping motor Mar. 30, 1993
5196777 Stepping motor drive control system Mar. 23, 1993
5194793 Control device for controlling a plurality of servo motors and servo motor controlling method Mar. 16, 1993
5194795 Drive system and a control unit therefor Mar. 16, 1993
5194796 Micro-step drive system of a five-phase stepping motor Mar. 16, 1993
5185627 Electrophotographic printer with media motion motor control Feb. 9, 1993
5181429 Headlamp positioning device Jan. 26, 1993
5182507 Stepping motor driving circuit having failsafe function Jan. 26, 1993
5177422 Recording control system for a recording apparatus Jan. 5, 1993
5175482 Stepping motor control circuit Dec. 29, 1992
5164650 Control device for stepping motor Nov. 17, 1992
5157515 Image reading apparatus using a plurality of phase excitation modes Oct. 20, 1992
5155427 Drive controller for stepping motor Oct. 13, 1992
5151640 Scanning device having a memory for storing driving steps for a stepping motor Sep. 29, 1992
5148092 Stepping motor driving circuit having failsafe function Sep. 15, 1992
5132603 Stepping motor Jul. 21, 1992
5126764 Sheet transport unit for recording systems Jun. 30, 1992
5121327 Microcomputer-controlled electronic postage meter having print wheels set by separate d.c. motors Jun. 9, 1992
5117171 Method and apparatus for controlling a stepping motor May. 26, 1992
5113113 Constant current reluctance motor drive systems May. 12, 1992
5111242 Image forming apparatus having a more smoothly controlled image forming element May. 5, 1992
5107194 Stepper motor control to vary output torque Apr. 21, 1992
5105140 Peristaltic pump motor drive Apr. 14, 1992
5103151 Method for driving a stepping motor Apr. 7, 1992
5100120 Cut-sheet feeder control method Mar. 31, 1992
5097189 Recording apparatus Mar. 17, 1992
5087867 Motor driving apparatus and printer Feb. 11, 1992
5087868 Rotary actuator Feb. 11, 1992
5084661 Position control system for information storage system Jan. 28, 1992
5084663 Control arrangement for a reluctance motor Jan. 28, 1992
5083230 Access mechanism for magnetic disk apparatus Jan. 21, 1992
5079653 Information storage disc transducer position control system using last step damping Jan. 7, 1992
5077511 Stepper motor drive for way flow end station Dec. 31, 1991
5075609 Recording apparatus Dec. 24, 1991
5072166 Position sensor elimination technique for the switched reluctance motor drive Dec. 10, 1991
5068586 Steeping motor driving apparatus Nov. 26, 1991

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