Sliding mode control for uncertain active vehicle suspension systems: an event-triggered H∞ control scheme

This paper considers the event-triggered sliding mode control problem of uncertain active vehicle suspension systems. A more comprehensive polytope approach is employed to model the uncertainties which generally exist in the sprung and unsprung masses. Moreover, the corresponding mathematical model is constructed for the quarter-vehicle active suspension system. Meanwhile, the event-triggered transmission mechanism is taken into account to schedule communication and save bandwidth. The main purpose of this paper is to develop a proper sliding mode controller which can guarantee the asymptotic stability and H-infinity performance for the suspension system with some constraints. By means of convex optimization technique, some sufficient conditions are derived to assure the constructed event-triggered sliding mode control law can not only ensure the corresponding sliding mode dynamics are asymptotically stable but also the predefined switching surface is reachable. Finally, the feasibility of the designed method is verified by a simulation example.

Automated summary

This paper investigates the event-triggered sliding mode control problem of uncertain active vehicle suspension systems with a comprehensive polytope approach. The mathematical model for the suspension system is constructed and sufficient conditions for stability and reachability are derived using convex optimization technique. The designed method's feasibility is confirmed through simulation example.