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Proceedings Paper

Internal model control of a fast steering mirror for electro-optical fine tracking
Author(s): Yun-xia Xia; Qi-liang Bao; Qiong-yan Wu
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Paper Abstract

The objective of this research is to develop advanced control methods to improve the bandwidth and tracking precision of the electro-optical fine tracking system using a fast steering mirror (FSM). FSM is the most important part in this control system. The model of FSM is established at the beginning of this paper. Compared with the electro-optical fine tracking system with ground based platform, the electro-optical fine tracking system with movement based platform must be a wide bandwidth and a robustness system. An advanced control method based on internal model control law is developed for electro-optical fine tracking system. The IMC is an advanced algorithm. Theoretically, it can eliminate disturbance completely and make sure output equals to input even there is model error. Moreover, it separates process to the system dynamic characteristic and the object perturbation. Compared with the PID controller, the controller is simpler and the parameter regulation is more convenient and the system is more robust. In addition, we design an improved structure based on classic IMC. The tracking error of the two-port control system is much better than which of the classic IMC. The simulation results indicate that the electro-optical control system based on the internal model control algorithm is very effective. It shows a better performance at the tracing precision and the disturbance suppresses. Thus a new method is provided for the high-performance electro-optical fine tracking system.

Paper Details

Date Published: 16 November 2010
PDF: 7 pages
Proc. SPIE 7843, High-Power Lasers and Applications V, 78430L (16 November 2010); doi: 10.1117/12.868901
Show Author Affiliations
Yun-xia Xia, Institute of Optics and Electronics (China)
Graduate School of the Chinese Academy of Science (China)
Qi-liang Bao, Graduate School of the Chinese Academy of Sciences (China)
Qiong-yan Wu, Institute of Optics and Electronics (China)
Graduate School of the Chinese Academy of Science (China)

Published in SPIE Proceedings Vol. 7843:
High-Power Lasers and Applications V
Upendra N. Singh; Dianyuan Fan; Jianquan Yao; Robert F. Walter, Editor(s)

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