| 基于模糊观测器的不确定非线性系统故障检测方法 |
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| 引用本文： | 宋华,张洪钺,王行仁.基于模糊观测器的不确定非线性系统故障检测方法[J].航天控制,2005,23(3):74-78. |
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| 作者姓名： | 宋华 张洪钺 王行仁 |
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| 作者单位： | 北京航空航天大学,北京,100083 |
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| 基金项目： | 国家自然科学基金重点项目(60234010) |
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| 摘 要： | 给出了一种不确定非线性系统的基于模糊观测器的故障诊断方法。用T-S模型描述不确定非线性系统,从而得到一种新的模糊观测器,并给出了其稳定性约束条件LMI。将模糊观测器和实际系统的输出之差作为残差可对不确定非线性系统进行故障检测。最后给出了一个控制系统感应电机的故障诊断应用实例。
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| 关 键 词： | 故障检测 模糊观测器 不确定系统 稳定性分析 |
| 文章编号： | 1006-3242(2005)03-0074-05 |
| 修稿时间： | 2005年3月11日 |
Fault Detection Approach Based on Fuzzy Observer for Uncertain Non-linear Systems |
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| Song Hua,Zhang Hongyue,Wang Xingren.Fault Detection Approach Based on Fuzzy Observer for Uncertain Non-linear Systems[J].Aerospace Control,2005,23(3):74-78. |
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| Authors: | Song Hua Zhang Hongyue Wang Xingren |
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| Institution: | Song Hua Zhang Hongyue Wang Xingren Beijing University of Aeronautics and Astronautics,Beijing 100083 |
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| Abstract: | A fault detection approach based on fuzzy observer for uncertain non-linear systems is presented. A takagi-sugeno (T-S) fuzzy model is used to describe the uncertain non-linear system, then a new fuzzy observer is obtained and its stability constraint condition based on linear matrix inequality (LMI) is presented. The residual can be generated by comparing the measurement and estimated output. Consequently the fault can be detected. Finally, a simulation example of fault detection for the induction motor in a non-linear control system is given for illustration. |
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| Keywords: | Fault detection Fuzzy observer Uncertain system Stability analysis |
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