| Popis: |
The main motivation of this study hopes to understand the characteristic of the metal tube type ultrasonic motor (MTTUSM) through simple components, different driving or operation ways, its characteristic includes the rotational speed, driving phase angle and the relation of operation time and temperature rise. And hopes it can be applied to drive the small-scale optics lens mould or precision fixed position system. According to the experimental results, the maximum rotational speed is 2,075rpm under conditions of 140V p-p driving voltage, 62kHz resonance frequency, 60° phase angle and 0.5mm thickness of piezoelectric ceramic slice. In addition, the speed that rising temperature is in direct proportion to the thickness of the piezoelectric ceramic and driving voltage. The temperature rises to 66.7°C from 20°C under conditions of 140V p-p driving voltage, 62kHz, 90° driving phase angle and piezoelectric ceramic of 12mm*2mm*0.5mm size. At last, the MTTUSM is applied to push the optics lens, finds its biggest thrust is 420mN under conditions of 140V p-p driving voltage, screw of M2 size and piezoelectric ceramic of 12mm*2mm*0.4mm size. |
