单输入/单输出非线性系统的状态观测器设计

A State Observer Design Approach for Nonlinear Systems Based on State Transformation

本文提出了一类非线性系统的状态观测器设计方法，针对单输入／单输出非线性系统，首先通过非线性状态变换，把原非线性系统变换成简单的中间非线性模型；然后对该简单的中间非线性模型设计稳定的常增益状态观测器；从而经状态逆变换得到原非线性系统的非线性状态观测器，最后通过一倒立摆非线性系统的仿真研究说明了该方法的有效性和可行性。

The paper addresses a state observer design approach for a class of nonlinear systems. A non-linear system transformation is applied to trans form a complex single-input/singleout put nonlinear system in-to a simple nonlinear model. Then a stable state observer is introduced for the simple nonlinear model. The state observer to the primitive nonlinear system is derived via a state inverse transformation.