Pulse-motor driving apparatus

Details Pulse-motor driving apparatus Pulse-motor driving apparatus

1997-04-17

1999-12-07

Sircus, Brian

Electricity: motive power systems

Open-loop stepping motor control systems

318685, 318596, G05B 1118

Patent

active

059989556

ABSTRACT:
For efficient pulse motor drive over a wide speed range, two drive-current control methods are switched in accordance with the speed of the pulse motor. As the first method, a PWM control method generates a pulsewidth modulation signal in accordance with a value indicated by a current control pattern. The pulse-motor drive current is controlled by voltage corresponding to the pulsewidth. As the second method, a BIT control method generates a digital signal corresponding to the value indicated by the current control pattern. The pulse-motor drive current is controlled by voltage corresponding to the digital value.

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