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Error-based observer of a charge couple device tracking loop for fast steering mirror
Tang, Tao1,2; Deng, Chao1,2,3; Yang, Tao1,2; Zhong, Daijun1,2; Ren, Ge1,2; Huang, Yongmei1,2; Fu, Chengyu1,2
2017
发表期刊Sensors (Switzerland)
ISSN1424-8220
卷号17期号:3页码:479
摘要The charge couple device (CCD) tracking loop of a fast steering mirror (FSM) is usually used to stabilize line of sight (LOS). High closed-loop bandwidth facilitates good performance. However, low-rate sample and time delay of the CCD greatly limit the high control bandwidth. This paper proposes an error-based observer (EBO) to improve the low-frequency performance of the CCD tracking system. The basic idea is by combining LOS error from the CCD and the controller output to produce the high-gain observer, forwarding into the originally closed-loop control system. This proposed EBO can improve the system both in target tracking and disturbance suppression due to LOS error from the CCD’s sensing of the two signals. From a practical engineering view, the closed-loop stability and robustness of the EBO system are investigated on the condition of gain margin and phase margin of the open-loop transfer function. Two simulations of CCD experiments are provided to verify the benefits of the proposed algorithm. © 2017 by the authors. Licensee MDPI, Basel, Switzerland.
关键词Bandwidth - Closed loop control systems - Errors - Image sensors - Mirrors - Target tracking - Time delay - Tracking (position)
收录类别SCI ; Ei
语种英语
文献类型期刊论文
条目标识符http://ir.ioe.ac.cn/handle/181551/8894
专题光电工程总体研究室(一室)
作者单位1.Key Laboratory of Optical Engineering, Chinese Academy of Science, Chengdu; 610209, China;
2.Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu; 610209, China;
3.University of Chinese Academy of Sciences, Beijing; 100039, China
推荐引用方式
GB/T 7714
Tang, Tao,Deng, Chao,Yang, Tao,et al. Error-based observer of a charge couple device tracking loop for fast steering mirror[J]. Sensors (Switzerland),2017,17(3):479.
APA Tang, Tao.,Deng, Chao.,Yang, Tao.,Zhong, Daijun.,Ren, Ge.,...&Fu, Chengyu.(2017).Error-based observer of a charge couple device tracking loop for fast steering mirror.Sensors (Switzerland),17(3),479.
MLA Tang, Tao,et al."Error-based observer of a charge couple device tracking loop for fast steering mirror".Sensors (Switzerland) 17.3(2017):479.
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