Delta算子系统的全程滑模变结构控制

Global sliding - mode variable structure control for Delta operator formulated systems

将全程滑模变结构控制思想引入Delta算子系统,给出了一种设计全程滑模控制方法.系统轨线一开始就位于切换面上,消除了非滑动模态运动,从而增强了系统的鲁棒性.利用Delta算子的离散特性求出系统不确定性近似值,从而在控制器设计过程中消去不确定项.仿真结果验证了该方法的有效性.

A global sliding control approach is proposed for Delta operator formulated systems by using global sliding mode method. The trajectory of the system arrives at the switching surface at the very beginning. The approach eliminates the reaching intervals, and the robustness of the system is improved. The effect of the disturbance is considered by using its approximate value. So the disturbance is eliminated at the controller design process. The simulation results show the features of the proposed control strategy.