Journal of Shanghai Jiao Tong University

Journal of Shanghai Jiaotong University >

2021 , Vol. 55 >Issue 9: 1142 - 1150

DOI: https://doi.org/10.16183/j.cnki.jsjtu.2020.103

Design of Fast Steering Mirror Based on Displacement Amplification Mechanism

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  • 1. Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China
    2. University of Chinese Academy of Sciences, Beijing 100049, China

Received date: 2020-04-13

  Online published: 2021-06-08

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Abstract

According to the current situation that the deflection angle of the piezoelectric ceramics direct drive fast steering mirror (FSM) is restricted by small elongation of piezoelectric ceramics and the large deflection angle cannot be realized, a novel piezoelectric FSM is designed. A two-stage lever-type amplification mechanism is adopted to realize the amplification of small displacement of piezoelectric ceramics and a strain gauge attached to the amplification mechanism is considered as the displacement sensor. The experimental results indicate that the deflection angle of the designed FSM is larger than 50 mrad, and the closed-loop linearity is below 0.5%, which satisfies the requirements of large deflection angle and accuracy pointing for light beam.

Key words： amplification mechanism; piezoelectric ceramics; fast steering mirror (FSM)

Cite this article

XIE Yong, LIU Chongfei, JIA Jianjun, DAI Jiansheng . Design of Fast Steering Mirror Based on Displacement Amplification Mechanism[J]. Journal of Shanghai Jiaotong University, 2021 , 55(9) : 1142 -1150 . DOI: 10.16183/j.cnki.jsjtu.2020.103

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