Patent ID: 7525263
Filing Date: 2009-04-28
Classification: E05Y,G05B,H03L

Abstract:
1. A control system, comprising: one controller serving as a master unit; and at least one controller serving as a slave unit, connected to the one controller serving as a master unit by a communication path; and a plurality of motors synchronously controlled by the one controller serving as a master unit and the at least one controller serving as a slave unit, wherein the master unit and the slave unit each comprise cycle signal generators for generating timing signals, the slave unit comprises correction amount generation means for receiving the timing signal generated by the cycle signal generator of the master unit, determining a phase difference and a cycle difference between the received timing signal and the timing signal generated by the cycle signal generator of the slave unit, and determining, based on the determined phase difference and cycle difference, a correction amount that allows the timing signal on the slave unit side to follow the timing signal on the master unit side, and the cycle signal generator of the slave unit corrects a generation cycle of timing signal, based on the correction amount determined by the correction amount generation means, and outputs the corrected generation cycle of timing signal.