Modeling and Control Algorithm Design of Large-Diameter Antenna Servo System

doi:10.3969/j.issn.1000-565X.2013.05.004

Journal of South China University of Technology (Natural Science Edition) ›› 2013, Vol. 41 ›› Issue (5): 22-27,33.doi: 10.3969/j.issn.1000-565X.2013.05.004

• Electronics, Communication & Automation Technology • Previous Articles Next Articles

Modeling and Control Algorithm Design of Large-Diameter Antenna Servo System

Zhang Lei Liao Xin-jiang

School of Automation Science and Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China

Received:2012-08-31 Revised:2012-11-26 Online:2013-05-25 Published:2013-04-01
Contact: 张磊(1987-) ，男，博士生，主要从事天线伺服控制和鲁棒控制等研究． E-mail:zhangleicash@163.com
About author:张磊(1987-) ，男，博士生，主要从事天线伺服控制和鲁棒控制等研究．
Supported by:
国家自然科学基金重点项目( 60834003) ; 国家自然科学基金资助项目( 61273109) ; 中国电子科技集团公司第五十四研究所新技术研究高校合作项目( K1128006)

Abstract

Abstract:

In the presence of high-frequency unmodeled dynamic uncertainty and low-frequency wind disturbance,the conventional PID control algorithm cannot provide high pointing and tracking accuracy for large-diameter antennaservo system.In order to solve this problem,a mixed-sensitivity H_infinity control algorithm based on the sensitivityfunction and the complementary sensitivity function,which possesses high system performance and strongstability,is designed and applied to the antenna servo system.Simulated results indicate that the proposed algorithmnot only significantly improves the dynamic performance of the antenna servo system but also possesses strongdisturbance rejection ability and robustness.

Key words: large-diameter antenna, servo system, pointing accuracy, H_infinity control, disturbance rejection, robustness

Zhang Lei Liao Xin-jiang. Modeling and Control Algorithm Design of Large-Diameter Antenna Servo System[J]. Journal of South China University of Technology (Natural Science Edition), 2013, 41(5): 22-27,33.

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Modeling and Control Algorithm Design of Large-Diameter Antenna Servo System

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