| 摘要 |
A servo controller includes: a first position feedback acquisition unit; a second position feedback acquisition unit; a converter converting the acquired position feedback of the first shaft to a value corresponding to the position feedback of the second shaft based on a synchronous ratio; a synchronous error calculator calculating synchronous error which is difference between the converted position feedback of the first shaft and the position feedback of the second shaft; a positional deviation calculator calculating a positional deviation of the second shaft which is difference between the position command for the second shaft and the position feedback of the second shaft; a filtering processor extracting components in a predetermined frequency range from the difference between the synchronous error and the positional deviation of the second shaft; and, a positional deviation corrector correcting the positional deviation of the second shaft by use of the output from the filtering processor. |
