| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide oscillatory type actuators, which can reduce biased abrasion, caused by their drive, in a state where the amplitude uneveness in the oscillation generated in oscillators is always the same, without deteriorating their speed uneveness , when driving them over a long time in the same direction and at the same speed, and to provide an image processor. <P>SOLUTION: Each oscillatory actuator (ultrasonic motor) M, which generates progressive waves in the oscillator, by fixing a piezoelectric element to the oscillator and applying two or more AC voltages different in phase to the piezoelectric element, and generates driving force, by bringing a movable body into contact with the oscillator, has a boosting circuit 709 which superposes aperiodic voltage on the above AC voltage. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
