On servo control of radio telescope: design and analysis with parametric uncertainties

被引：0
|
作者：
Li, Ning [1 ,2 ]
Liu, Zhiyong [1 ,2 ]
Yang, Lei [1 ,2 ]
Kazezkhan, Guljaina [1 ,2 ]
Hou, Xiaozheng [1 ]
Wang, Na [1 ]
机构：
[1] Chinese Acad Sci, Xinjiang Astron Observ, Urumqi, Peoples R China
[2] Univ Chinese Acad Sci, Beijing, Peoples R China
来源：
2019 CHINESE AUTOMATION CONGRESS (CAC2019) | 2019年
关键词：
radio telescope; servo control; H_inj; LADRC; parametric uncertainties;
D O I：
10.1109/cac48633.2019.8996245
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
The characteristics of the radio telescope servo system are vulnerable to the effects of wearing, aging and thermal deformations, which cause plant parametric uncertainties. In this paper, the performances of conventional proportional-integral-derivative (PID), Linear Quadratic Gauss (LQG), linear active disturbance rejection control (LADRC) and mixed-sensitivity H_infinity (H_int) for radio telescope servo system are investigated. The control algorithms are analyzed quantitatively from rising time, overshoot, settling time and the integral of time multiplied absolute value of error (ITAE) in MATLAB. Simulation results show that mixed sensitivity H_inf is the best choice under plant model known premise for its minimum performance indexes. While LADRC ranks the second as a suboptimal choice and can maintain robust performance without requiring comprehensive information of plant model. PID has a worse property than the other three algorithms. Our results are important reference for accurate servo control of radio telescope.
引用
收藏
页码：506 / 511
页数：6
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