具有有界扰动的时变非线性系统的鲁棒控制

考虑一类具有有界扰动的时变非线性系统的鲁棒输出调节问题．利用递推设计方法设计出一种新的鲁棒控制器，该控制器不要求知道有界扰动和系统时变参数的上界．采用该控制器，能保证闭环系统信号的全局有界性，并且通过控制器参数的适当选择，可使闭环系统输出充分接近零．仿真例子表明所设计鲁棒控制器的有效性．

Robust Control of Time-Varying Nonlinear Systems with Bounded Disturbances

The robust output regulation problem of time-varying nonlinear systems with bounded disturbances is considered. A recursive design method is used to design a new class of robust controllers. These controllers do not require the upper bounds of the bounded disturbances or the systems' time-varying parameters. When applied, they can ensure the glo bal boundness of all closed-loop signals,and can make the outputs of closed-loop systems sufficiently reach zero. The simulation example shows the effectiveness of the designed robust controllers in this paper.