CONTROL SYSTEM FOR AN ELECTRONICALLY COMMUTATED MOTOR,ELECTRONICALLY COMMUTATED MOTOR SYSTEM,LAUNDRY APPARATUS AND METHODS,FOR CONTROLLING SAME

摘要

A method of controlling laundry apparatus having first and second conductors for supplying power and being driven by an electronically commutated motor having a plurality of winding stages adapted to be selectively commutated. In practicing this method, voltages across the winding stages are converted to digital form thereby to digitize the voltages, and the winding stages are commutated by selectively switching the winding stages to the conductors in at least one preselected sequence. The commutating is temporarily interrupted to leave the winding stages temporarily unpowered, and the winding stages are switched from a first connection arrangement to a second connection arrangement. The digitized voltages are sensed while the winding stages are temporarily unpowered, and the commutating is resumed beginning at a point in the sequence determined from the sensed digitized voltages.