Infrared and Laser Engineering, Volume. 46, Issue 8, 818001(2017)
Open loop control of fast steering mirror based on PI inverse model
Fast steering mirror platform which is composed of piezoelectric ceramic has hysteresis characteristic, it affects the control of the fast steering mirror. In order to control fast steering mirror effectively, open loop control method based on Prandtl-Ishlinskii(PI) inverse model was adopted. Firstly, the PI model was used to build the mathematic model of the hysteresis characteristic of the fast steering mirror and the parameters of PI model were identified by least mean squares method; Secondly, the parameters of the inverse model of PI were solved based on the reversibility of the PI model; Lastly, the effectiveness of the open loop control method based on PI inverse model was verified. According to trajectory tracking experiment data, in the case of sine wave trajectory, root mean error is 1.23% and maximum error is 2.45%; in the case of triangle wave, root mean error is 1.3%, maximum error is 2.37%. It proves that open loop method based on PI inverse model is feasible and can effectively control fast steering mirror.
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Hu Liangliang, Mi Fengwen, Jin Weiqi, Sheng Yicheng, He Yuting, Lei Qiongying. Open loop control of fast steering mirror based on PI inverse model[J]. Infrared and Laser Engineering, 2017, 46(8): 818001
Category: 光学设计及仿真
Received: Dec. 10, 2016
Accepted: Jan. 20, 2017
Published Online: Nov. 7, 2017
The Author Email: Liangliang Hu (1582086036@qq.com)