基于CNF的饱和切换系统的事件触发控制

Event-triggered control for saturated switched system based on composite nonlinear feedback

针对一类具有执行器饱和的切换系统,提出一种基于组合非线性反馈控制(CNF)的事件触发控制方法,以达到在保证系统性能的同时减少网络带宽占用的目的.首先,为了降低系统资源成本,构造事件触发机制来判断是否对系统当前状态进行采样,设计组合非线性反馈控制来提高系统的暂态性能;然后,利用多Lyapunov函数方法得到饱和切换系统在驻留时间切换信号下渐近跟踪问题的充分条件,同时证明事件触发最小的时间间隔大于零,从而避免芝诺(Zeno)行为;最后,通过仿真实例验证所提出方法的有效性.

For a class of switched systems with actuator saturation,the event-triggered control method with composite nonlinear feedback(CNF)controllers is proposed to ensure system performance while reducing network bandwidth consumption.Firstly,in order to reduce the cost of system resources,event-triggered conditions are constructed to determine whether to sample the current state of the system,and a composite nonlinear feedback control is designed to improve the transient performance of the system.Then,using the multi-Lyapunov function method sufficient conditions for the practical stability of switched saturated systems under switching signals satisfying dwell time are derived,and it is proved that the minimum time interval for event triggering is greater than zero,avoiding the Zeno behaviour.Finally,a simulation example is given to illustrate the effectiveness of the proposed method.