H_? Event-Triggered Tracking Control For Switched LPV Systems

The switched LPV system is a switched system whose subsystems are all LPV systems with a wide range of practical background.Inherited both characteristics of LPV systems and switched systems,switched LPV systems can better describe practical systems and nonlinear systems.On the other hand,the event-triggered mechanism can solve the problem of limited network communication,network congestion,waste of resources and so on.The event-triggered mechanism also reduces the controller's updating rate to improve system life.In this paper,the H?,control for the continuous-time switched LPV system is studied.The H? tracking control for the continuous-time switched LPV system based on event-triggered mechanism and the H? tracking control for the discrete-time switched LPV system based on event-triggered mechanism are further explored.Then it can be applied to the switched LPV model of the aeroengine.It mainly contains the following aspects:First of all,the event-triggered mechanism is applied to a continuous-time switched LPV system with exogenous disturbance.The stability analysis and the controller design are performed by using the parameter-dependent multiple-Lyapunov function method and the average dwell time technique.By applying the event-triggered strategy,the event generator and the switching controller are co-designed for achieving the H? control for the continuous-time switched LPV system.The sufficient conditions for the coexistence of event generator and switching control law guarantee the switched LPV system are given.The feasibility and effectivity of the proposed method are shown by numerical simulations.Secondly,a class of continuous-time switched LPV systems with exogenous disturbance and varying parameters within a polytope is studied.Event-triggered mechanism is used to obtain the state tracking to the reference model.The stability analysis and controller design are carried out by using the parameter-dependent multiple Lyapunov function method and the average dwell time technique.The sufficient conditions for the coexistence of the event generator and the switched control law to guarantee the H? tracking control of the switched LPV system are given.By co-designing the event generator and the switched LPV controller,the H? state tracking control of the reference model can be realized.The feasibility and effectivity of the method are verified by numerical simulations.Finally,the H? tracking control problem of the discrete-time switched LPV system based on event-triggered mechanism.is studied.Co-design of the event generator and the switched LPV controller can help to achieve the H? tracking control of the reference model.Then the theoretical results are applied to the switched LPV model of the aeroengine.Simulation results illustrate the feasibility and efficiency of the proposed method.