| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a vibration wave motor controller capable of realizing cost reduction. <P>SOLUTION: A photographing device 10 having a lens 100 is provided with a lens position control unit 110 for controlling the position of the lens 100, by using a vibration wave motor 111 that is to be driven with the driving voltage of a set frequency F, and a driving frequency control unit 120 for controlling the value of the set frequency F. The control unit 120 acquires the effective frequency of the set frequency F as an estimated frequency, on the basis of variation in the position of a moving object 111b of the vibration wave motor 111 inputted from an encoder 119, calculates the updated value of the set frequency F on the basis of the estimated frequency F acquired, and inputs the calculated value to the control section 110. <P>COPYRIGHT: (C)2008,JPO&INPIT |
