Adaptive fuzzy output feedback fault-tolerant control for active suspension systems with dual-channel event-triggered communication

Purpose This paper aims to propose an adaptive fuzzy output feedback fault-tolerant control scheme for an active suspension system (ASS). Dual-channel event-triggered strategy (DCETS) is designed to regulate the control and output signal transmission respectively for ASS. Design/methodology/approach In contrast to conventional single-channel event-triggered control mechanism, the key advantage of this strategy lies in the ability to significantly reduce communication frequency in both forward and feedback channels while maintaining closed-loop stability. A fault compensation strategy is designed to address actuator failures through parameter estimation techniques, which guarantees the vertical state of the ASS remains stable even in case of actuator fault. Theoretical analysis shows that the proposed control scheme can guarantee the states of the system are bounded, and Zeno behavior is excluded. Finally, the effectiveness of the proposed algorithm is verified by a random pavement test. Findings An adaptive fuzzy output-feedback fault-tolerant control strategy with dual-channel event-triggered mechanism is proposed for ASS. Originality/value Adaptive fuzzy output-feedback fault-tolerant control strategy is synthesized with fault compensation and DCETS, enabling ASS to maintain performance under unmeasurable states while reducing communication resource consumption.