Control system
AssigneeFanuc Corporation
InventorsKazunari Aoyama, Minoru Nakamura, Takaaki Komatsu
Life of this patent
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Abstract
A master unit and a plurality of slave units are connected by way of a communication path. The master unit sends to the slave units timing signals generated by its own cycle signal generator by way of a communication path. The slave units determine the cycle difference and the phase difference between a timing signal generated by its own cycle signal generator and the timing signal sent from the master unit and, in accordance therewith, determine a cycle adjustment amount. The cycle signal generators of the slave units adjust the timing signal cycle based on the cycle adjustment amount.
Claims5
A control system in which one controller serving as a master unit and at least one controller serving as a slave unit are connected by a communication path and motors controlled by these controllers are synchronously controlled, 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.
Dependencies are inferred from the claim text.