Abstract

In this paper, a new method for fault detection of Networked Control Systems (NCSs) with random delay based on eigendecomposition and Padé Approximation is proposed. In the method, a so-called distribution matrix corresponding to unknown network-induced delay is first obtained through eigendecomposition, then it is further transformed into a vector by using Padé Approximation to make the decoupling easier. Finally, the robustness to random network-induced delay is realized by decoupling from the distribution vector. The method is compared with the conventional fault detection approach without considering network-induced delay and the existing Taylor Expansion based fault detection approach for NCSs.

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