不确定离散系统的变速率滑模控制

Multi-rate Sliding Mode Control for Uncertain Discrete Systems

针对一类不确定离散系统,提出了一种变速率滑模控制方案.通过使用变速率采样技术,设计了用于同时估计系统状态和干扰的混杂观测器,并据此发展了滑模控制器,确保取得准滑动模态的同时,消除了对不确定项的线性边界条件要求.仿真结果验证了所提方法的有效性.

This paper proposes a multi-rate sliding mode control scheme for a class of uncertain discrete-time systems. By using multi-rate sampling technology, a hybrid state and disturbance observer is proposed to estimate the system states and disturbance. Based on the observed states and disturbances, the sliding mode controller is designed to achieve quasi-sliding mode, thus removing the linear boundary conditions of the uncertainties.