›› 2014, Vol. 40 ›› Issue (2): 31-36.doi: 10.3969/j.issn.1674-1579.2014.02.006

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On Fast and Accurate Control for Piezo-Based Steering Mirror

  

  1. 1.Shanghai Institute of Satellite Engineering, Shanghai 200240,China; 2.Dalian University of Technology, Dalian 116024,China
  • Online:2014-04-24 Published:2014-04-24

Abstract: A fast and accurate control system of the piezo-based steering mirror is presented in this paper. The closed-loop control system for scanning and tracking is constructed by combining the piezobased steering mirror, voltage amplifier, displacement sensor and realtime control system AD5435. Then, the feedforward-feedback composite control is designed by using the characteristics of hysteretic dynamic in the piezoelectric system. The fast and accurate tracking performance of the piezobased mirror is demonstrated by the closed-loop control experiment, in which the relative root mean square(RMS) errors of the sinusoidal and triangle trajectories at 50Hz are less than 3.6%. The fast and accurate control method presented in this paper is beneficial to the accurate scanning and jitter suppression in the satellite-based optical-mechanical system.

Key words: piezo-based steering mirror, opticalmechanical systems, mechanical vibration

CLC Number: 

  • TN209