Patent ID: 8963473
Filing Date: 2015-02-24
Classification: H02P

Abstract:
1. A motor control system for controlling a plurality of DC-motors, the motor control system comprising: a motor controller, configured for providing a number of first power signals each for being applied to one of the DC motors and a single common second power signal for powering the plurality of DC-motors, and configured for receiving a plurality of position feedback signals from the plurality of DC-motors; one or more motor modules connectable to the plurality of DC-motors and comprising for each of the plurality of DC-motors a variable impedance configured for being operatively connected to one of the DC motors and for creating an impedance indicative of a position of said one DC-motor; a wire interface for interconnecting the one or more motor modules and the motor controller for transferring the plurality of first power signals and the single common second power signal and the plurality of position feedback signals; wherein each variable impedance is arranged for being powered by one of the first power signals and by the common second power signal and for generating one of the position feedback signals when the corresponding DC-motor is being powered; and wherein the number of wires of the wire interface is twice the number of DC-motors plus one.