Restraining the instability of a stepper motor

Details Restraining the instability of a stepper motor Restraining the instability of a stepper motor

1985-02-28

1987-06-16

Shoop, Jr., William M.

Electricity: motive power systems

Open-loop stepping motor control systems

318685, H02P 800

Patent

active

046738550

ABSTRACT:
In an apparatus and method for preventing instability of a stepper motor operated by a plurality of alternating currents of different respective phases and controlled by a sequence of control pulses, the control pulses defining an angular parameter of the stepper motor, the steps include determining the sum of the phase currents, transforming the sum of the phase currents into a voltage fluctuating about an average value, determining the average voltage, and thereafter feeding back the fluctuating voltage so as to angle-modulate said control pulses.

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"Solid State Electronic Circuits for Engineering Technology", Anthony S. Manera, McGrow-HIll, 1973.
Landis & Gyr Mitteilungen 31, 1984, pp. 28-35.
Wetter, "Amortissement des Oscillations d'un moteur pas a pas", SEV/VSE 73, 1982, pp. 527-534.

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