Patent ID: 6727674
Filing Date: 2004-04-27
Classification: H02M,H02P

Abstract:
A device for producing and controlling an alternating current with a direct current source in at least one inductive load, in particular for driving a stepper motor, preferably in micro-steps, comprising:a control loop circuit having an actuator for said control loop, said actuator containing a complex programmable logic device said complex programmable logic device connecting said control loop circuit to feedback elements so as to provide for a flexible adjustment of the current producing and controlling device to the load to be operated, and to the function of the load, without changing the control loop circuit in which said complex programmable logic device is implemented, operative to generate alternating phases in said load in response to at least one parameter relative to desired current within said load, said at least one parameter being selected by applying a (universal) logic description to provide said parameter as a series of parameter constants.