Digital stepping motor device circuit

Details Digital stepping motor device circuit Digital stepping motor device circuit

1976-05-21

1978-05-02

Schaefer, Robert K.

Electricity: motive power systems

Open-loop stepping motor control systems

318685, G05B 1940

Patent

active

040877329

ABSTRACT:
A control circuit for a stepping motor is provided which rotates the motor armature in such a manner as to minimize motor resonance while not appreciably reducing the motor torque at high speeds. The circuit includes means for receiving an input signal indicative of the desired direction and rate of motor travel and means responsive to the input signal for developing a position command signal which is a multi-step function having a maximum and a minimum level and wherein all steps are of equal amplitude but wherein at least one step between said maximum and minimum levels has a duration which is unequal to that of another step. Finally, the circuit includes means responsive to the position command signal for developing an energization signal for the stepping motor.

REFERENCES:
patent: 3445741 (1969-05-01), Gerber
patent: 3750000 (1973-07-01), Bruckner et al.
patent: 3777246 (1973-12-01), Barnes
patent: 3842332 (1974-10-01), Heine et al.
patent: 3885210 (1975-05-01), Burnett
patent: 3906319 (1975-09-01), Milligan
patent: 3909693 (1975-09-01), Yoshitake et al.
patent: 3919608 (1975-11-01), Usami et al.

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