基于不确定项观测器的混沌系统变结构控制

Sliding mode control for a class of chaotic system based on uncertainty observer

基于不确定项观测器方法研究了一类状态不完全可测的不确定混沌系统的变结构控制问题,提出了利用不确定项的观测值来估计真实值、设计控制器的新方法.适当选择观测器增益可使观测误差充分的小,达到良好的控制效果.最后对Chua混沌系统进行数值仿真,结果表明:方法具有收敛性好、抖振小的优点.

The sliding mode control problem of uncertain chaotic system is investigated based on uncertainty observer.A control law using the observer estimation of the disturbance is derived.Moreover the observer can be designed to make the observer error small enough,so we can get satisfying results.Finally,some simulation results about Chua chaotic system are given to demonstrate that the proposed controller has good convergence and little chatting.