| 摘要 |
PURPOSE:To obtain an ultrasonic wave motor having simple structure by shifting the positions for forming electrodes on the inner and outer circumferential faces and applying a voltage onto the electrodes from a single power source. CONSTITUTION:Electrodes 21, 22 are formed on the inner circumferential face of a tubular piezoelectric ceramics 20 over the semicircle and electrodes 23, 24 are formed on the outer circumferential face over the semicircle. The electrodes 21, 22 on the inner circumferential face are shifted by about 45 deg. from the electrodes 23, 24 on the outer circumferential face. AC power is applied from a power source 25 onto these electrodes thus operating an ultrasonic wave motor. |
