具有输出不变性的变结构控制系统

A Variable Structure Control System with Output-Invariance

提出了变结构控制系统(VSS)输出不变性的概念,论证了一些不满足全状态不变性条件的系统可以具有输出不变性。用去耦技术设计了一种具有输出不变性的VSS,它利用系统的实际状态构成开关式控制律,其输出能很好地跟踪参考输入,且对对象参数的变化和外扰不敏感。

The output-invariance of variable structure System(VSS)is presented.It is shown that some systems which do not satisfy the invariance condition may possess the output-invariance.A VSS with the output-invariance has been designed by means of the decoupling method.The switch-control law of the VSS is composed of the real states.The VSS can follow the reference input and it is insensi- tive to the variation of the plant parameters and to the disturbance.