Stochastic Event-Triggered Fault-Tolerant Control of Linear Systems Against Multi-Channel Stochastic Actuator Faults

This paper investigates the event-triggered fault-tolerant control for linear systems under stochastic false data injection attacks and multi-channel stochastic actuator faults. By actively using the random distribution information of fault intensity, a stochastic event-triggered communication strategy is proposed, which can effectively enhance the faulty tolerance of control system compared with the fault-independent event-triggered scheme. To capture the behaviors of stochastic attacks and actuator faults, the closed-loop system is modeled as a sampled-data system with multiple Bernoulli stochastic variables and uncertain input matrices consisting of faulty intervals. By a two-sided looped-functional approach, some criteria of fault tolerance analysis and controller design are derived. Finally, a UAV system is utilized to validate the advantages of the proposed control strategy.