不确定线性系统的鲁棒切换函数变结构控制

Variable Structure Control Strategy with Robust Sliding Mode for Uncertain Linear Systems

针对工程领域中常见的一类不匹配不确定系统 ,即不确定性不是发生在控制通道中的系统 ,如工程中具有执行器的控制系统 ,提出了一种建立鲁棒切换函数的方法 ,进而设计滑模变结构鲁棒控制策略 ,该策略可确保整个闭环系统的轨迹是一致最终有界并具有一致稳定性 .最后以船舶减摇鳍控制系统为例 。

A variable structure robust control algorithm with robust sliding mode function is presented for a class of uncertain linear systems with the absence of matching assumption in which the uncertainty is not acted within channels implicit in the control inputs. The robust control algorithm proposed in the paper with continuous performance guarantees that the resulting closed loop system can be globally practical stabilized. The practical application of the control strategy to the design of a stability augmentation system for ship fin control is also presented.