Fast and high precision positioning strategy based on trajectory planning for ground based telescope

doi:10.37188/OPE.20223023.3070

CIOMP OpenIR

	Fast and high precision positioning strategy based on trajectory planning for ground based telescope
	J. Liu; Y. Deng; Q. Fei; H. Li and M. Shao
	2022
发表期刊	Guangxue Jingmi Gongcheng/Optics and Precision Engineering
ISSN	1004924X
卷号	30 期号:23 页码:3070-3080
摘要	In order to achieve fast and high-precision position switching control of a ground-based telescopewithout overshoot and while improving the positioning performancea trajectory-planning strategy based on an approximate optimal-command-shaping algorithm is proposed. The approximate optimal-command-shaping algorithm is utilized to design the command shaperwhich is located before the position controller. The designed command shaper is able to perform trajectory planningusing the reference commandand the speed- and acceleration-limit information of the system. As a result of the algorithm-designed command shaperthe system can be guided to its destination quickly and smoothly. Compared to the traditional trapezoidal-command-shaping algorithmthe proposed approximate optimal-command-shaping algorithm overcomes the problem of chatteringthus achieving better position-control performance. The experimental results demonstrate thatcompared to the positioning strategy without trajectory planningthe system using the proposed positioning strategy has a reduced adjustment time. In particularthe adjustment time for the system to enter the 2error band in response to a 2. 5 and 30 step reference is reduced by 1. 14 s and 1. 57 srespectively. In additionthe overshoot of the position response is significantly reduced. The simulation and experimental results show that the positioning performance of the telescope can be improved effectively by the trajectory-planning positioning strategybased on the proposed approximate optimal-command-shaping method. 2022 Chinese Academy of Sciences. All rights reserved.
DOI	10.37188/OPE.20223023.3070
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收录类别	ei
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文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/66662
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	J. Liu,Y. Deng,Q. Fei,et al. Fast and high precision positioning strategy based on trajectory planning for ground based telescope[J]. Guangxue Jingmi Gongcheng/Optics and Precision Engineering,2022,30(23):3070-3080.
APA	J. Liu,Y. Deng,Q. Fei,&H. Li and M. Shao.(2022).Fast and high precision positioning strategy based on trajectory planning for ground based telescope.Guangxue Jingmi Gongcheng/Optics and Precision Engineering,30(23),3070-3080.
MLA	J. Liu,et al."Fast and high precision positioning strategy based on trajectory planning for ground based telescope".Guangxue Jingmi Gongcheng/Optics and Precision Engineering 30.23(2022):3070-3080.

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