Determining the position of an element, e.g. sun roof of vehicle, actuated by the drive shaft of DC motor, involves evaluating current ripple contained in armature current signal when moving element from one block position to another

摘要

The method involves evaluating the current ripple contained in the armature current signal when moving the element from one block position to another. The CD motor is controlled for running in the actuated element in the block position when a signal for running out the actuated element from a block position and a normalization regarding the current block position at the system side are present.