| 摘要 |
PROBLEM TO BE SOLVED: To provide a synchronous drive unit capable of obtaining precise frequency characteristic during actual synchronous drive.SOLUTION: The synchronous drive unit, which has plural motors that drive an object in an identical direction and a motor drive unit that controls the respective motors, includes: a multi-axis command generation section that calculates a non-rotation command in which the rotation moment around the center of gravity of the object becomes 0 while the plural motors are driven synchronously; a single-axis command generation unit that simultaneously gives a component of each axis of the non-rotation command to each motor drive unit every time when performing measurement of frequency characteristic; response storage that stores response outputs from the plural motors separately one by one at a time when inputting the single-axis command; an output correction unit that corrects delay time among response outputs which are stored after measurement to obtain corrected output; and a frequency characteristic analyzer that adds plural corrected outputs for each motor and calculates a frequency response characteristic on the basis of the addition result and a single axis command to the motor drive unit for directly driving the motor. |
