离散时间系统变结构控制的改进趋近律

An Improved Reaching Law of Variable Structure Control for Discrete-Time Systems

针对离散时间系统的变结构控制,对离散趋近律方法进行研究,给出新的改进的离散趋近律,提出时变的准滑动模态带。由于时变准滑模带的带宽递减趋于零,从而消除了系统的抖动,极大地改善系统的稳态性能,使系统在有限时间内趋近原点。仿真结果表明方法的可行性和有效性。

The variable structure control of discrete time system using discrete reaching law is studied in this paper.An improved discrete reaching law is given.As the time-varying chattering region of the quasi-sliding mode decreasingly approaches to zero,the proposed method can eliminate system chattering and improve system performance effectively.The simulation results illustrate that the given method is feasible and effective.