Acceleration feedback of a CCD-based tracking loop for fast steering mirror

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	Acceleration feedback of a CCD-based tracking loop for fast steering mirror
	Tang Tao; Huang YongmEi; Fu Chengyu; Liu Shunfa
刊名	Optical Engineering
	2009
卷号	48 期号:1 页码:13001
通讯作者	Tang Tao
中文摘要	In the control system of a CCD-based tracking loop for a fast steering mirror (FSM), the most effective method often employed to improve pointing performance is to increase high gain of the control system for a high bandwidth, which, however, usually suffers a great deal from a low CCD sampling rate and the mechanics of the FSM. Moreover, the amount of time delay engendered by sampling and data processing can significantly reduce the performance of a closed-loop system. Therefore, a tentative approach to the implementation of a CCD-based tracking control system with acceleration feedback is proposed. In theory, the position open loop is made of double integrators with a high bandwidth of the acceleration feedback loop; in fact, however, the acceleration open loop of the FSM response includes a quadratic differential, and it is very difficult to compensate a quadratic differential with an integral algorithm. To solve this problem, a novel acceleration closed system such as a bandpass filter is proposed. The position is reconstructed into a simple first-order filter instead of a third-order control system. In addition experimental results show that the acceleration feedback proposed here can effectively enhance the bandwidth of the closed-loop system and its trajectory tracking and pointing performance.
英文摘要	In the control system of a CCD-based tracking loop for a fast steering mirror (FSM), the most effective method often employed to improve pointing performance is to increase high gain of the control system for a high bandwidth, which, however, usually suffers a great deal from a low CCD sampling rate and the mechanics of the FSM. Moreover, the amount of time delay engendered by sampling and data processing can significantly reduce the performance of a closed-loop system. Therefore, a tentative approach to the implementation of a CCD-based tracking control system with acceleration feedback is proposed. In theory, the position open loop is made of double integrators with a high bandwidth of the acceleration feedback loop; in fact, however, the acceleration open loop of the FSM response includes a quadratic differential, and it is very difficult to compensate a quadratic differential with an integral algorithm. To solve this problem, a novel acceleration closed system such as a bandpass filter is proposed. The position is reconstructed into a simple first-order filter instead of a third-order control system. In addition experimental results show that the acceleration feedback proposed here can effectively enhance the bandwidth of the closed-loop system and its trajectory tracking and pointing performance.
收录类别	SCI ; EI
语种	英语
内容类型	期刊论文
源URL	[http://ir.ioe.ac.cn/handle/181551/4051]
专题	光电技术研究所_光电工程总体研究室（一室）
作者单位	中国科学院光电技术研究所
推荐引用方式 GB/T 7714	Tang Tao,Huang YongmEi,Fu Chengyu,et al. Acceleration feedback of a CCD-based tracking loop for fast steering mirror[J]. Optical Engineering,2009,48(1):13001.
APA	Tang Tao,Huang YongmEi,Fu Chengyu,&Liu Shunfa.(2009).Acceleration feedback of a CCD-based tracking loop for fast steering mirror.Optical Engineering,48(1),13001.
MLA	Tang Tao,et al."Acceleration feedback of a CCD-based tracking loop for fast steering mirror".Optical Engineering 48.1(2009):13001.