不确定性线性系统的变结构自适应模型跟踪控制

A variable-structure adaptive model-following control for uncertain linear

提出了一种适用于不确定性线性系统的变结构自适应模型跟踪控制器设计方法.所设计的变结构控制律包括两部分,即线性控制部分和非线性切换控制部分.考虑到实际问题中,对于有些不确定性系统的系统参数变化比较剧烈且并变化范围的界很难预先估计,在设计控制律时引入了对系统参数变化的自适应算法,进一步增强了系统的适应性和鲁棒性.数字仿真表明了其有效性.

A variablestructure adaptive modelfollowing control for uncertain linear systems is presented.The presented control law consists of two control parts,which are the cintinuous control part and the discontinuous control part.Moreover,with consideration that usually the dynamic parameters of the uncertain system are poorly known and rapidly changing,an adaptive estimation algorithm for the bounds of system parameter variations is proposed to enhance adaptability and robustness of the system.Numerical simulation results are given to illustrate its effectiveness.