Patent ID: 9622201
Date: 2017-04-11
CPC Classifications: G05B,H04W

Claim:
1. A synchronization control device configured to previously register a displacement table, in which displacement of a driven shaft is associated with respective phases of a drive shaft, and determine a displacement of the driven shaft with respect to the phase of the drive shaft and position the driven shaft on the basis of the displacement table, the synchronization control device comprising: a command movement amount calculation unit for calculating a command movement amount, which is an amount of movement of the driven shaft to a synchronization position, relative to a current phase of the drive shaft, on the basis of the displacement table; a predicted command movement amount calculation unit for calculating a predicted command movement amount, which is an amount of movement of the driven shaft to a synchronization position, relative to the phase of the drive shaft after the current phase, on the basis of the displacement table; and a movement amount comparison unit for comparing the command movement amount with the predicted command movement amount, wherein synchronization of the driven shaft is not started when the comparison result from the movement amount comparison unit indicates that the predicted command movement amount is less than the command movement amount, and synchronization is started when the predicted command movement amount is equal to or greater than the command movement amount.