Stabilizing arrangement for a stepping motor

Details Stabilizing arrangement for a stepping motor Stabilizing arrangement for a stepping motor

1986-04-21

1987-07-28

Shoop, Jr., William M.

Electricity: motive power systems

Open-loop stepping motor control systems

318685, H02P 800

Patent

active

046834095

ABSTRACT:
A pulse-width modulator is used to control the sequence generator of a stepping motor to stabilize the stepping motor. One input to the pulse-width modulator is a cyclic sequence of pulses. The other input to the pulse-width modulator is an error-correction signal. The error-correction signal is proportional to variations about an average of the sum of the currents produced by the sequence generator. The error-correction signal is used by the pulse-width modulator to modulate the duration of individual pulses in the cycle sequence of pulses to produce a sequence of pulses of variable duration. The pulses of variable duration serve to control the sequence generator and stabilize the stepping motor.

REFERENCES:
patent: 4091316 (1978-05-01), Friedman
patent: 4540928 (1985-09-01), Marhoefer

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