| 一种基于2DOFH∞控制器的航天器姿态控制方法 |
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| 引用本文： | 梁红义,张锦江.一种基于2DOFH∞控制器的航天器姿态控制方法[J].空间控制技术与应用,2010,36(2):42-46. |
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| 作者姓名： | 梁红义 张锦江 |
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| 作者单位： | 北京控制工程研究所,北京100190;空间智能控制技术国家级重点实验室,北京,100190 |
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| 摘 要： | 研究某航天器俯仰轴姿态的二自由度鲁棒控制问题．首先分析俯仰轴系统中存在的主要不确定性，建立系统的结构与非结构不确定模型；然后将二自由度鲁棒控制方法应用于俯仰轴系统中设计H∞控制器，由于得到的H∞控制器阶次过高，对其进行降阶处理；最后进行仿真验证．结果表明该控制器对干扰力矩和参数不确定性的影响具有良好的鲁棒稳定性．
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| 关 键 词： | 二自由度鲁棒控制 H∞控制 航天器姿态控制 鲁棒稳定性 |
A 2DOF H∞ Controller-Based Attitude Control Design Approach for a Spacecraft |
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| LIANG Hongyi,ZHANG Jinjiang.A 2DOF H∞ Controller-Based Attitude Control Design Approach for a Spacecraft[J].Aerospace Contrd and Application,2010,36(2):42-46. |
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| Authors: | LIANG Hongyi ZHANG Jinjiang |
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| Institution: | 1. Beijing Institute of Control Engineering/a>;Beijing 100190/a>;China/a>;2. National Key Laboratory of Science and Technology on Space Intelligent Control/a>;China |
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| Abstract: | This paper presents a 2DOF （ two-degree-of- freedom） H∞ controller based pitch-axis attitude control design approach for a spacecraft. A dynamics model of pitch-axis attitude control system with structured and unstructured uncertainties is analyzed and established. Then the Ha controller is designed by using the two-degree-of-freedom robust control approach. Beause the order of the controller is very high, the Hankel-norm approximation is used to reduce the order of the controller. Finally, Simulations demonstrate that this H∞ controller has better robust stability to influences of disturbance torques and parameter uncertainties. |
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| Keywords: | two-degree-of-freedom robust control H∞ control spacecraft attitude control robust stability |
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