研究了一类不确定非线性系统的量化输出反馈控制设计问题.不同于现有文献,所研究系统的非线性增长依赖于不可测状态.这使得现有文献中的观测器设计方法不再适用,且闭环系统性能分析更为复杂和困难.文章首先引入了一个新的高增益观测器,进而利用现有文献中的集值映射和迭代设计方法,构造了一个量化输出反馈控制器,最后利用循环小增益定理和动态量化策略,得到了保证闭环系统所有状态有界性且输出最终任意小的充分性条件. The problem of designing a quantization output feedback control for a class of uncertain nonlinear systems is studied. Unlike the existing literature, the nonlinear growth of the system under study depends on an unmeasurable state, which makes the observer design method in the existing literature no longer applicable , And the performance analysis of the closed-loop system is more complicated and difficult.This paper introduces a new high-gain observer at first, and then uses the set-valued mapping and iterative design methods in the existing literature to construct a quantized output feedback controller. Finally, Loop small gain theorem and dynamic quantization strategy, the sufficient conditions for ensuring the boundedness of all states of the closed-loop system and the final output of the closed-loop system are obtained.