Abstract
Non-uniformly sampled systems are widely found in industry. In these systems the process output is sampled and the control input is generated at non-uniformly distributed time instants. In this paper, an optimal residual generator is developed for fault detection in non-uniformly sampled systems. In the direct approach used here, the intersample behavior of fault and disturbance is captured by introducing operators that map continuous-time signals to discrete-time signals. No periodicity assumption is made for the sampling instants.
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