Adaptive Event-Triggered Fault Detection For Markovian Jump Systems With Network Time-Delays
TRANSACTIONS OF THE INSTITUTE OF MEASUREMENT AND CONTROL(2021)
Abstract
In this paper, the adaptive event-triggered fault detection (FD) problem is investigated for Markovian jump systems (MJSs) with network time-delays and data package dropouts. First, a novel event-triggered communication strategy with an adaptive threshold is introduced to screen the sampled signals and reduce the data releasing frequency. Consequently, the limited communication resources and network bandwidth are saved as much as possible. Second, since communication links between the plant and filter are considered to be unreliable, the effects of intermittent package dropouts phenomenon and network time-delays are taken into account simultaneously. By using time-delay system method, the network-induced phenomena, adaptive event-triggered strategy and MJSs are unified into a networked MJSs time-delay system. Then, sufficient conditions are developed such that the resulting residual system is mean-square exponentially stable with the desired H-infinity performance. Finally, a numerical example of the F-404 aircraft engine system is provided to illustrate the effectiveness and potential of the proposed design method.
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Key words
Adaptive event-triggered strategy (AETS), Markovian jump systems (MJSs), fault detection (FD), data package dropouts, network time-delays
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