Hybrid Control Bumps Attenuation of Networked Switched Systems With Multi-Source Disturbances: A Bump-Related Adaptive Event-Triggered Method

In this paper, the hybrid control bumps attenuation problem is investigated for networked switched systems subject to multi-source disturbances and event-triggering. First of all, a new hybrid bumpless transfer performance characterization is established to attenuate abrupt large hybrid control bumps jointly caused by triggering and switching. Secondly, by introducing the bump-dependent function with switched adjustable parameters, a novel bump-related adaptive event-triggered strategy is creatively established to improve hybrid bumpless transfer performance. Thirdly, the sampled-state-based switching strategy is designed to simultaneously eliminate the Zeno phenomenon of switching and remove the dependency on real-time information of system state, which is a necessary prerequisite for the classical state-dependent switching law to work. Then, sufficient conditions are derived to guarantee the asymptotic stability of the augmented system while achieving bothH∞ performance and hybrid bumpless transfer performance. Moreover, we propose the hybrid bumpless transfer control scheme through the co-design of the switching rule, bump-related adaptive event-triggered strategy, and disturbance observer-based event-triggered controllers. Finally, the turbofan engine model is employed to verify the effectiveness and applicability of the presented method.