DC motor system for controlling an electric motor with an electric correcting variable for noise has an electric motor and a regulating unit in a controlling module

摘要

A regulating unit (4) has a filter unit (9) for shaping the course of an electric correcting variable for a DC electric motor (2) so that any noise in the electric motor caused through vibrating parts is as low as possible. A sonic sensor/microphone (5) in a controlling module detects a measured variable that can represent an amount for increase in noise.