Patent ID: 6731094
Filing Date: 2004-05-04
Classification: B65G,H02P

Abstract:
A control system for a first brush-less motor comprising stators and a first rotor and a second brush-less motor comprising stators and a second rotor, said control system constructed so that signals representing angular position of the first and second rotors are utilized to control electric currents applied to the stators on the first and second brush-less motors, the control system further comprising a sequencer, a first controller, and a second controller, the first controller having a first rotational signal-outputting terminal, wherein signals selected from the group consisting of (a) basic signals representing angular position of the first rotor and (b) signals representing rotational speed of the first rotor are output from the first controller through the first rotational signal-outputting terminal so as to be taken therefrom out of the first controller and processed by the sequencer, said second controller having a second rotational signal-outputting terminal, wherein signals selected from the group consisting of (a) basic signals representing angular position of the second rotor and (b) signals representing rotational speed of the second rotor are output from the second controller through the second rotational signal-outputting terminal so as to be taken therefrom out of the second controller and processed by the sequencer, wherein the sequencer can process the signals from the first and second rotational signal-outputting terminals to coordinate operation of the first and second motors through the first and second controllers.