Hybrid Fault-tolerant Control of Networked Control Systems based on Dynamic Event-triggered Mechanism

In paper, we study the issue of fault estimation and fault-tolerant control, for a series of linear networked control systems with arbitrary actuator failures under the dynamic event-triggered mechanism. Firstly, internal dynamic variable has been added to the event-triggered mechanism to further reduce waste in data transmission by expanding the interval between events. The closed-loop fault networked control systems are established under the dynamic event-triggered mechanism. Secondly, considering the influence of system errors on fault diagnosis, a fault detection observer is designed to detect faults online. Based on this, combining the merits of active and passive fault-tolerant control, a hybrid fault-tolerant controller is designed, which can effectively decrease the impact of unknown faults on system performance. Finally, a simulation example verifies the effectiveness of this method.