Positional control device for electric adjustment motor of motor vehicle seat

摘要

There is a single "H"-bridge with an angular turn monitor connected one or more power switches in series with the motors (M). The switches are switched over, one after the other, in multiple arrays, to control angular position of rotor of each motor. A control unit (min C) or microprocessor is provided for this purpose and there is a PWM control stage for the "H" bridge.