非线性系统的全局线性输出反馈镇定

Global stabilization of nonlinear systems via linear output feedback

考虑了利用线性输出反馈全局镇定一类不确定非线性系统的问题.已有线性输出反馈控制中三角型约束条件被推广到了非三角型条件.构造了一个线性高增益观测器和一个耦合的线性高增益控制器,并利用增益尺度变换的方法,证明了闭环系统的全局稳定性.仿真结果说明该方法的有效性.

The problem of global stabilization for a class of uncertain nonlinear systems using linear output feedback is considered. Instead of imposing triangular type restrictions on the nonlinear uncertainties, the ex- isting linear output feedback control schemes were extended to certain nontriangular type restrictions. A linear high-gain observer and a coupled linear high-gain controller were constructed, and by using the gain scaling method, global stability of the closed loop system can be achieved. Simulation results are given to show the ef- fectiveness of the proposed scheme.