Fault Detection Observer Design in Low Frequency Domain for Linear Time-delay Systems
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摘要: 对线性时滞系统, 本文在低频域内考虑了故障检测问题. H∞范数用来度量外界扰动, H-指标用来度量故障敏感性. 本文主要结果包括得到了故障检测观测器存在的充分条件而且通过解线性矩阵不等式得到了观测器的增益解. 最后, 数值例子解说明了本文方法的有效性.Abstract: This paper deals with the robust fault detection (FD) problem in low frequency domain for linear time-delay systems. The H∞ norm and H- index are used to measure the robustness to unknown inputs and the sensitivity to faults, respectively. The main results include derivation of a sufficient condition for the existence of a robust FD observer and its construction based on the linear matrix inequality (LMI) solution parameters. Finally, numerical simulations show the effectiveness of the presented methodology.
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