Stepping motor control circuit

Details Stepping motor control circuit Stepping motor control circuit

1976-07-20

1978-07-11

Schaefer, Robert K.

Electricity: motive power systems

Positional servo systems

With particular motor control system responsive to the...

318138, G05B 1940

Patent

active

041004710

ABSTRACT:
A control circuit for a stepping motor is provided which rotates the motor armature in such a manner as to minimize motor resonances while not appreciably reducing the motor torque at high speeds. The motor inherently possesses a non-linear transfer function of current to flux and the circuit includes means responsive to an input signal for developing a position command signal which is a sinusoidal waveform modified by the inverse of the motor transfer function. Further means are provided responsive to the position command signal for developing an energization signal for the stepping motor including means responsive to the position command signal and motor field current for terminating a motor energization cycle.

REFERENCES:
patent: 3750000 (1973-07-01), Bruckner et al.
patent: 3777246 (1973-12-01), Barnes
patent: 3885210 (1975-05-01), Burnett
patent: 3890554 (1975-06-01), Yoshitake et al.
patent: 4020485 (1977-04-01), Busby

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