上海交通大学学报

上海交通大学学报（自然版） ›› 2011, Vol. 45 ›› Issue (08): 1146-1150.

• 自动化技术、计算机技术 • 上一篇    下一篇

基于线性矩阵不等式的卫星姿态鲁棒控制

韩笑冬1，薄翠梅2，张登峰3   

  1. (1.中国空间技术研究院 通信卫星事业部，北京 100094； 2. 南京工业大学 自动化学院，南京 210009； 3. 南京理工大学 自动化学院，南京 210094)
  • 收稿日期:2011-03-11 出版日期:2011-08-30 发布日期:2011-08-30
  • 基金资助:

    国家自然科学基金资助项目（60574082；60804027），南京理工大学自主科研计划专项基金（2010ZYTS012）

Robust Control Based on LMI for Satellite Attitude Control Systems

 HAN  Xiao-Dong-1, BAO  Cui-Mei-2, ZHANG  Deng-Feng-3   

  1. (1.Institute of Telecommunication Satellite, CAST, Beijing 100094, China；2. Department of Automation, Nanjing University of Technology, Nanjing 210009, China；3. Department of Automation, Nanjing University of Science and Technology, Nanjing 210094, China)
  • Received:2011-03-11 Online:2011-08-30 Published:2011-08-30

摘要：  针对执行机构性能下降或出现故障，提出了对执行机构故障具有完整性且满足H∞扰动衰减指标的状态反馈鲁棒控制设计方法.该方法采用线性矩阵不等式（LMI）方法，分析了圆盘极点指标与H∞指标的相容性，并在相容指标约束下给出了鲁棒H∞控制器存在的充分条件和设计步骤.将鲁棒控制方法应用于卫星姿态控制系统，并进行了数值仿真.结果表明，该方法对卫星姿态控制系统执行机构性能下降或故障状态下具有较好的鲁棒性，能够满足姿态控制要求.

关键词: 卫星, 姿态控制, 极点约束

Abstract: Considering the actuator faults, the solution of this problem was obtained for an Hinfinity statefeedback controller with circular disk pole constraints. Based on linear matrix inequality, the consistence on circular disk pole index and Hinfinity index was analyzed, and sufficient conditions for the existence of robust Hinfinity faulttolerant controller were given. The simulation of applying in a satellite attitude control system with actuator faults show the validity of the proposed method. And the results shows that this method has better robustness for satellites attitude control actuator under the condition of performance degradation or fault state，which is capable of meeting the attitude control requirement.

Key words: satellite, attitude control, pole constraints

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