考虑了非线性广义系统的状态观测器的设计问题。利用微分中值定理将动态误差非线性广义系统转化成线性变参数广义系统。如果给定的线性矩阵不等式可解,则存在一个全维状态观测器,并可保证降维状态观测器也存在。利用李亚普诺夫函数分析了误差系统的稳定性,说明误差是指数收敛的。最后以仿真实例说明了所给出的方法是有效的,且优于现有结果。
The design problem of observers for nonlinear descriptor systems is considered. Using the differential mean value theorem (DMVT), the nonlinear error dynamic descriptor system is transformed into a linear parameter varying (LPV) descriptor system. If the given linear matrix inequalities (LMIs) are feasible, there exists a full-order observer and the existence of a reduced-order observer can be also guaranteed. The stability of the error system is analyzed by a Lyapunov function, which shows that the errors are exponential convergent. Finally, simulation results show that the obtained method is valid and is better than existing results.