Electricity: motive power systems – Open-loop stepping motor control systems
Patent
1983-08-19
1985-04-09
Miska, Vit W.
Electricity: motive power systems
Open-loop stepping motor control systems
318685, H02K 2904
Patent
active
045104298
ABSTRACT:
A control circuit for a stepper motor is disclosed. The stepper motor is driven by a chopper drive circuit. The frequency and the duty cycle of the stator or motor winding to which the chopper drive circuit has supplied the current is measured. The frequency and duty cycle measured are related to the back EMF induced in the driven stator. The back EMF is filtered and is used in a negative feedback manner and is supplied to the quadrature phase of the stepper motor to provide a damped step response.
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patent: 4329635 (1982-05-01), Reilly
Bergmann Saul M.
Miska Vit W.
Tulin Corporation
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