| 摘要 |
<P>PROBLEM TO BE SOLVED: To increase flexibility in design by ensuring synchronization even when a control period T<SB POS="POST">c</SB>of a controller device is not an integral multiplication of a drive period T<SB POS="POST">d</SB>of a drive device. <P>SOLUTION: A drive device 30A having a drive period shorter than a control period of a controller device 1 includes: period timing correction means 33 which adjusts start timing of the drive period in accordance with a synchronous signal from the controller device 1; and period calculation means 32 which, when the control period is not the integral multiplication of the drive period in a system driven in accordance with the adjusted start timing, obtains the number of the drive period and the fraction time included in the control period and calculates the drive period so that the total time for increment when one or more drive periods are increased without changing the number of the drive period matches with the fraction time or calculates the drive period so that the total time for decrement when one or more drive periods are decreased by increasing the number of the drive period matches with the difference between the original drive period and the fraction time. <P>COPYRIGHT: (C)2013,JPO&INPIT |
