Rotary Type Standing Wave Piezoelectric Actuator for Aperture

Affiliation of Author(s):航空学院

Journal:Zhendong Ceshi Yu Zhenduan

Abstract:In order to control and regulate light beam by driving aperture, A new rotary type standing wave piezoelectric actuator is proposed. In the existing PZT actuators with stable performance, always works in composited models of a single PZT oscillator, which a high requirement for manufacturing accuracy is put forward to. The performance and efficiency of the actuators would fall when the coupling effect of the vibration modes deteriorated by the oscillator size change after a long time friction and wear. Aimed to solving the problem and the character of aperture, this piezoelectric actuator is proposed. By using the same model of the same two rod-shaped PZT oscillator, rotary motion of aperture is driven by friction. Prototype machine is designed and manufactured, experimental study is carried out. Under the circumstance of fixing the pre-load pressure at 8N, and adjusting the driving voltage from 200 Vp-pto 400 Vp-p, the rotational speed shows a linear relationship with the driving voltage. The maximum clockwise speed is 75.36 rad/min and the maximum anticlockwise speed is 62.8 rad/min. The resolution of the modal-independent USM is up to 0.34 mrad at the applied voltage of 400 Vp-p. The piezoelectric actuator fulfills the function of driving aperture, characterized by simpler structure, fast response, smooth operation and high precision. © 2018, Editorial Department of JVMD. All right reserved.

ISSN No.:1004-6801

Translation or Not:no

Date of Publication:2018-02-01

Co-author:刘坚,陈迪,王亮

Correspondence Author:刘坚,jjz

Date of Publication:2018-02-01