| 摘要 |
This invention relates to a driving device for a vibration type actuator. In this device, since the characteristics of the actuator change depending on temperature and the like, control characteristics must be optimized. This invention is designed to determine a control gain based on the ratio of the change amount of the frequency of a driving signal that causes the speed change to the change amount of the speed when the driving speed changes a predetermined amount upon driving of the actuator, thereby performing appropriate control.
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