Design of an H∞ controller using a discrete-time event-triggered mechanism for a half-vehicle uncertain active suspension system

The H ∞ control technique aims to attenuate the effect of external disturbances on dynamical systems. This control technique is very important for active suspension systems since these systems are often affected by external disturbances, such as adverse road profiles. So far, the existing control design methods of active suspension systems have not been developed for the design of controllers using an event-triggered mechanism for uncertain active suspension systems subject to external disturbances. To fill this gap, in this paper, we consider the design of a controller using a discrete-time event-triggered mechanism for a half-vehicle uncertain active suspension system with external disturbances. For this, we first propose a discrete-time event-triggered mechanism, and then design an event-triggered controller for the half-vehicle uncertain active suspension system. Finally, we demonstrate the effectiveness of the obtained results by numerical results and simulations. Unlike the existing controllers using periodic sampling mechanisms or static continuous-time event-triggered mechanisms, the proposed controller in this paper uses an extra dynamic variable and depends on discrete supervision, which may effectively save communication resources.