
Proceedings Paper
Application of an adaptive PI controller to the servo control system of a photoelectronic detection systemFormat | Member Price | Non-Member Price |
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Paper Abstract
Controller performance plays an important role in the servo control system of the photoelectronic detection system.
However, it is difficult to redesign the controller parameters in real time when the system performance degrades. This
paper proposed an adaptive PI controller using Model Reference Adaptive Control (MRAC) techniques with the MIT
rule and applied it to the current-loop of the servo control system. In the MRAC, the desired behavior of the process is
specified by a model, and the parameters of the controller are adjusted based on the difference between outputs of the
closed-loop process and the model. The MIT rule is an adjustment mechanism that makes the error becomes zero. The
presented algorithm is carried out in two steps. Firstly, given the time and domain specification, a reference model based
on the open-loop transfer function of the plant and a PI controller is designed to parallel with the real process. The
adaptation gains of the MIT rule and the external signal are determined to guarantee the convergence of the parameters
of the PI controller and minimize the squared model error. Secondly, the adaptation is started and the process is excited
adequately in order to enable the parameter adaptation to take place. When the parameters have adapted after a period of
time, then the adaptation was stopped and the PI controller operates again with fixed parameters. The proposed algorithm
was simulated on the servo control system of the photoelectronic detection system and the results show the effectiveness
of the algorithm.
Paper Details
Date Published: 22 February 2008
PDF: 8 pages
Proc. SPIE 6622, International Symposium on Photoelectronic Detection and Imaging 2007: Laser, Ultraviolet, and Terahertz Technology, 66220U (22 February 2008); doi: 10.1117/12.790809
Published in SPIE Proceedings Vol. 6622:
International Symposium on Photoelectronic Detection and Imaging 2007: Laser, Ultraviolet, and Terahertz Technology
Liwei Zhou, Editor(s)
PDF: 8 pages
Proc. SPIE 6622, International Symposium on Photoelectronic Detection and Imaging 2007: Laser, Ultraviolet, and Terahertz Technology, 66220U (22 February 2008); doi: 10.1117/12.790809
Show Author Affiliations
Ai Xiong, Institute of Optics and Electronics (China)
Graduate School of the Chinese Academy of Sciences (China)
Yongkun Fan, Institute of Optics and Electronics (China)
Graduate School of the Chinese Academy of Sciences (China)
Graduate School of the Chinese Academy of Sciences (China)
Yongkun Fan, Institute of Optics and Electronics (China)
Graduate School of the Chinese Academy of Sciences (China)
Huimin Shen, Xichang Satellite Launch Ctr. (China)
Published in SPIE Proceedings Vol. 6622:
International Symposium on Photoelectronic Detection and Imaging 2007: Laser, Ultraviolet, and Terahertz Technology
Liwei Zhou, Editor(s)
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