| 摘要 |
PURPOSE:To enable to arbitrarily switch the driving direction of a piezoelectric motor as required by applying a voltage output having the prescribed phase difference to a plurality of vibrators. CONSTITUTION:A vibrator section 15 has a pair of vibrator 18, 19 which are depended vertically substantially in parallel with the downward from the lower surface 17 of a stationary unit 16. Voltage outputs having the prescribed phase difference are respectively applied from a drive control circuit 25 to the electrode plates of the vibrators 18, 19. The advance and delay of the relative phase of the voltage outputs are altered by a changeover switch 26, thereby allowing the vibrating mode of a vibration piece 20 to be altered, and the driving direction of a drive output member 23 is switched by the piece 20. |
