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对一类带有未知输入干扰的离散描述系统，提出了一种新型的干扰解耦状态观测器；对一类带有未知输入干扰和有界不确定性的离散描述系统，以状态观测器为基础，利用故障信号与观测误差之间的关系，构造了一种带有未知输入干扰的离散描述系统的鲁棒故障诊断方法。该方法不但能够检测系统中是否出现故障，而且还可以估计出故障的幅值大小。文中还讨论了阈值的选取、该算法能检测到的最小故障信号和故障信号的估计误差，其仿结果表明了该方法的有效性。 相似文献
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IntroductionDynamics of almost all plants in reality variesaccording to the condition under which the plantis operated.An idea to describe the variation ofplant dynamics is interpolating a number of rep-resentative models defined at representative op-erating points.In Ref. [1 ] ,the plant was as-sumed to described as a linear interpolation ofproper stable coprime factorizations of transferfunctions of two representative models and thestabilization problems have been considered. InRef.[2 ] ,it… 相似文献
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In this paper, an approach for designing robust fault detection filter (RFDF) of networked control systems (NCSs) with unknown
inputs is studied. The design aims at implementing the optimal trade-off between robustness of unknown inputs (including the
item produced by networked-induced delay) and sensitivity of fault. The key design issue is to introduce an optimal fault
detection filter based on NCSs with the control law compensation as the reference residual model of NCSs and to formulate
the RFDF design as a model-matching problem. By applying H
∞ optimization technique, linear matrix inequality (LMI) approach is given to solve the model-matching problem. The validity
of the proposed approach is shown by a numerical example.
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ＩｎｔｒｏｄｕｃｔｉｏｎＡｌｍｏｓｔｅｖｅｒｙｌｉｎｅａｒｏｆｎｏｎｌｉｅａｒｃｏｎｔｒｏｌｓｔｒａｔｅｇｙｃｅｎｔｅｒｓａｒｏｕｎｄａｐｒｏｃｅｓｓｍｏｄｅｌ,ｗｉｔｈｒｅａｌｌｉｆｅｐｒｏｃｅｓｓｅｓｂｅｉｎｇｕｓｕａｌｌｙｎｏｎｌｉｎｅａｒ．Ｔｈｅａｃｃｕｒａｃｙｏｆｔｈｅｍｏｄｅｌｃｏｕｌｄｄｉｒｅｃｔｌｙｉｎｆｌｕｅｎｃｅｔｈｅｐｅｒｆｏｒ－ｍａｎｃｅｏｆｔｈｅｆｉｎａｌｃｏｎｔｒｏｌｌｅｒ．Ｌｉｎｅａｒｍｏｄｅｌｓａｌ－ｗａｙｓｌｅａｄｔｏａｒｅｌａｔｉｖｅｓｉｍｐｌｉｃｉｔｙｉｎｔ… 相似文献
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ＩｎｔｒｏｄｕｃｔｉｏｎＴｈｅｓａｍｐｌｅｄ－ｄａｔａＨ∞ｏｐｔｉｍａｌｃｏｎｔｒｏｌｐｒｏｂｌｅｍｉｓｔｏｍｉｎｉｍｉｚｅｔｈｅＬ２－ｉｎｄｕｃｅｄｎｏｒｍｆｒｏｍｔｈｅｃｏｎ－ｔｉｎｕｏｕｓ－ｔｉｍｅｄｉｓｔｕｒｂａｎｃｅｔｏｔｈｅｃｏｎｔｉｎｕ... 相似文献
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