Extended state observer based control of fast step/stare imaging mechanisms

doi:10.3788/OPE.20182608.2084

CIOMP OpenIR

	Extended state observer based control of fast step/stare imaging mechanisms
	Huang, Pu; Yang, Xiu-Li; Xiu, Ji-Hong; Li, Jun; Li, You-Yi; Xu, Yong-Sen
	2018
发表期刊	Guangxue Jingmi Gongcheng/Optics and Precision Engineering
ISSN	1004924X
卷号	26 期号:8 页码:2084-2091
摘要	An extended state observer (ESO) based controller with acceleration compensation strategy was proposed to satisfy the high requirements for control performance of fast step/stare imaging mechanisms. First, the theory of ESO was described and its characteristics were expatiated. Then, the third-order linear extended state observer (LESO) was designed with an imaging mechanism as the controlled object. By placing the observer in the feedback channel of the speed loop, a double loop controller of position and speed based on an ESO was designed. On this basis, an acceleration compensation strategy was proposed, and the compensating link was described using the estimated acceleration output by the observer. The experiment results showed that the settling time of the imaging mechanism was reduced at every step from 76 ms to 33 ms and the accuracy of the angular position during the period of stare decreased approximately 0.07to 0.01. In addition, the speed fluctuation was reduced by approximately two to three times compared with that without acceleration compensation. The control performance of the mechanism was significantly improved to meet high-performance requirements. The design process of the controller was simple and the adjusted parameters were less than that of traditional designs, which is of high practical value in terms of improving the performance of similar control systems. 2018, Science Press. All right reserved.
关键词	Controllers Acceleration State estimation
DOI	10.3788/OPE.20182608.2084
收录类别	EI
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/60660
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Huang, Pu,Yang, Xiu-Li,Xiu, Ji-Hong,et al. Extended state observer based control of fast step/stare imaging mechanisms[J]. Guangxue Jingmi Gongcheng/Optics and Precision Engineering,2018,26(8):2084-2091.
APA	Huang, Pu,Yang, Xiu-Li,Xiu, Ji-Hong,Li, Jun,Li, You-Yi,&Xu, Yong-Sen.(2018).Extended state observer based control of fast step/stare imaging mechanisms.Guangxue Jingmi Gongcheng/Optics and Precision Engineering,26(8),2084-2091.
MLA	Huang, Pu,et al."Extended state observer based control of fast step/stare imaging mechanisms".Guangxue Jingmi Gongcheng/Optics and Precision Engineering 26.8(2018):2084-2091.

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