| 引用本文: | 贾庆贤,张迎春,李化义,李葆华.卫星姿态控制系统鲁棒故障诊断方法[J].哈尔滨工业大学学报,2011,43(3):19.DOI:10.11918/j.issn.0367-6234.2011.03.004 |
| JIA Qing-xian,ZHANG Ying-chun,LI Hua-yi,LI Bao-hua.NUIO/LMI based robust fault diagnosis for satellite attitude control system[J].Journal of Harbin Institute of Technology,2011,43(3):19.DOI:10.11918/j.issn.0367-6234.2011.03.004 |
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| 摘要: |
| 针对卫星姿控系统的鲁棒故障诊断问题,在未知输入观测器(UIO)基础上,提出利用非线性未知输入观测器(NUIO)对执行机构和敏感器故障诊断.考虑姿控系统存在外部干扰以及系统不确定性,建立姿控系统非线性模型,设计NUIO对部分干扰和系统不确定性解耦,令未解耦部分到系统残差H∝范数作为性能指标使之最优,运用线性矩阵不等式(LMI)求解观测器增益矩阵.最后,对执行机构和敏感器发生突变故障和缓变故障进行诊断仿真,结果验证此方法的有效性. |
| 关键词: 姿态控制系统(ACS) NUIO H∝控制 LMI 鲁棒故障诊断 |
| DOI：10.11918/j.issn.0367-6234.2011.03.004 |
| 分类号:V448.22 |
| 基金项目:微小型航天器技术国防重点学科实验室开放基金资助项目(HIT.KLOF2009092) |
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| NUIO/LMI based robust fault diagnosis for satellite attitude control system |
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JIA Qing-xian1,2, ZHANG Ying-chun1, LI Hua-yi1, LI Bao-hua2
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1.Research Center of Satellite Technology,Harbin Institute of Technology,150001 Harbin,China;2.Space Control and Inertial Technology Research Center,Harbin Institute of Technology,150001 Harbin,China)
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| Abstract: |
| To solve the problem of robust fault diagnosis in satellite attitude control system,based on UIO,a nonlinear UIO(NUIO) is proposed to dealt with actuator and sensor faults.Considering the external disturbance and uncertainty of the nonlinear attitude control system,a new model for the system is established.By using H-infinity control and linear matrix inequality(LMI) approach,the NUIO matrix is obtained.At last,the diagnosis simulation of satellite attitude control system with actuator and sensor faults validates the feasibility of the proposed method. |
| Key words: attitude control system(ACS) NUIO H-infinity control LMI robust fault diagnosis |
