頁籤選單縮合
題名 | FDI Design for Uncertain Nonlinear Systems with Both Actuator and Sensor Faults |
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作 者 | Yang, Junqi; Zhu, Fanglai; | 書刊名 | Asian Journal of Control |
卷期 | 17:1 2015.01[民104.01] |
頁次 | 頁213-224 |
分類號 | 448.942 |
關鍵詞 | Observer-based FDI; Auxiliary outputs; High-gain observer; Observer matching condition; |
語文 | 英文(English) |
英文摘要 | This paper considers the problems of simultaneous actuator and sensor fault detection and isolation (FDI) for a class of uncertain Lipschitz nonlinear systems when the observer matching condition is not satisfied. An augmented vector is proposed to construct an augmented system that contains a fault vector consisting of both the actuator and sensor faults of the original system. An auxiliary output vector is constructed to satisfy the observer matching condition, and a high-gain sliding mode observer is designed to approximately estimate the auxiliary output vector. An adaptive robust sliding mode observer is developed as a fault detector to detect the actuator and sensor faults simultaneously. Then, multi-observers are designed to attain the actuator and sensor fault isolation purpose. Finally, a numerical simulation is given to show the effectiveness of the proposed methods. |
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