| 一类互联非线性系统的分布式故障估计观测器设计 |
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| 引用本文： | 夏静萍,姜斌,张柯. 一类互联非线性系统的分布式故障估计观测器设计[J]. 控制与决策, 2019, 34(4): 727-734 |
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| 作者姓名： | 夏静萍 姜斌 张柯 |
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| 作者单位： | 南京航空航天大学 自动化学院,南京,211106;南京航空航天大学 自动化学院,南京,211106;南京航空航天大学 自动化学院,南京,211106 |
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| 基金项目： | 国家自然科学基金项目(61773201, 61673207)；江苏高校“青蓝工程”项目. |
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| 摘 要： | 针对一类互联非线性系统,提出一种分布式故障估计观测器设计方法.首先,将状态向量和故障向量进行增广设计,得出等价的增广互联系统;其次,利用互联子系统之间的耦合信息,设计包含关联子系统估计信息的分布式故障估计观测器,用于在线实时估计子系统中出现的故障;再次,提出基于$H_infty$性能和$L_2-L_infty$性能的方法求解观测器增益矩阵;最后,通过一个仿真实验表明所提出方法的可行性和有效性.
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| 关 键 词： | 故障诊断 故障估计 互联系统 观测器 分布式 线性矩阵不等式 |
Distributed fault estimation observer design for a class of interconnected nonlinear systems |
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| XIA Jing-ping,JIANG Bin and ZHANG Ke. Distributed fault estimation observer design for a class of interconnected nonlinear systems[J]. Control and Decision, 2019, 34(4): 727-734 |
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| Authors: | XIA Jing-ping JIANG Bin ZHANG Ke |
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| Affiliation: | College of Automation Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing211106,China,College of Automation Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing211106,China and College of Automation Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing211106,China |
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| Abstract: | A distributed fault estimation observer design method is proposed for a class of interconnected nonlinear systems. Firstly, an equivalent augmented interconnected system is obtained by augmenting the state vector and fault vector. Using coupling information among interconnected subsystems, the distributed fault estimation observer is designed to online estimate faults that occur in subsystems. Then, observer gain matrices are calculated based on $H_infty$ performance and $L_2-L_infty$ performance. Finally, a simulation is carried out to illustrate the feasibility and effectiveness of the proposed method. |
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