| 基于降维UIO的飞控系统鲁棒故障诊断 |
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| 引用本文： | 郭玉英,姜斌.基于降维UIO的飞控系统鲁棒故障诊断[J].南京航空航天大学学报,2009,41(2). |
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| 作者姓名： | 郭玉英 姜斌 |
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| 作者单位： | 1. 南京航空航天大学自动化学院,南京,210016;西南科技大学信息工程学院,绵阳,621010
2. 南京航空航天大学自动化学院,南京,210016 |
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| 基金项目： | 国家自然科学基金，航空科学基金 |
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| 摘 要： | 针对同时存在对象矩阵参数的摄动、外界扰动和故障的一类线性系统,基于降维的未知输入观测器(Un-known input observer,UIO)技术对飞控系统执行器故障进行诊断,使得系统对矩阵参数摄动和外界干扰具有良好的鲁棒性.该诊断方法把原系统分解为两个子系统,一个子系统受故障的影响,而另外一个子系统不受故障的影响,但状态可测.这样,不但大大降低了计算量,而且保证了故障诊断的快速性和准确性.
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| 关 键 词： | 飞控系统 未知输入观测器(UIO) 故障诊断 |
Reduced-Order UIO Based Robust Fault Diagnosis for Flight Control Systems |
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| Guo Yuying,Jiang Bin.Reduced-Order UIO Based Robust Fault Diagnosis for Flight Control Systems[J].Journal of Nanjing University of Aeronautics & Astronautics,2009,41(2). |
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| Authors: | Guo Yuying Jiang Bin |
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| Institution: | 1.College of Automation Engineering;Nanjing University of Aeronautics & Astronautics;Nanjing;210016;China;2.School of Information Engineering;Southwestern University of Science and Technology;Mianyang;621010;China |
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| Abstract: | A reduced-order unknown input observer(UIO) based robust fault diagnosis is proposed to detect and estimate the faults in flight control systems with plant uncertainties,disturbance and faults.The system is decomposed into two different subsystems.One is decoupled from actuator fault and the other is affected by the fault,but its states can be directly measured.The developed approach can reduce the computations,and improve the speed and the accuracy of the fault diagnosis. |
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| Keywords: | flight control systems unknown input observer fault diagnosis |
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