讨论了一类离散非线性系统降维观测器的存在性。对给定的Lyapunov函数,在保证观测误差渐近稳定的条件下,给出了该离散非线性系统降维观测器的设计方法。用数值例子说明了该设计方法的有效性。
The existence of reduced-order observers for a class of discrete-time nonlinear systems is dis-cussed in this paper.For a given Lyapunov function,under the condition that the observation error is as-ymptotically stable,a reduced-order observer design method of the discrete nonlinear system is given.Fi-nally,a numerical example is presented to illustrate the effectiveness of the design method.