Step motor driving method and apparatus for performing PWM contr

Details Step motor driving method and apparatus for performing PWM contr Step motor driving method and apparatus for performing PWM contr

1995-10-17

1998-10-06

Wysocki, Jonathan

Electricity: motive power systems

Positional servo systems

With particular motor control system responsive to the...

318254, H02P 800

Patent

active

058181938

ABSTRACT:
A step motor driving method employing an electric circuit operable on a supply voltage applied thereto for generating a step drive signal having a variable on-duty ratio to drive the step motor. A PWM control is made to change the step drive signal on-duty ratio. The the step drive signal on-duty ratio is increased to compensate for a supply voltage drop.

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