At the same time, the stability of the synchronized system is analyzed, with the method for designing nonlinear state observer being proposed.
同时分析了同步系统的稳定性，给出了设计非线性状态观测器的方法。
By designing nonlinear state observer, two chaotic systems are constructed and kept synchronized, hence, encrypted signals can be completely recurred.
通过设计非线性状态观测器，构造了两个混沌系统并使其保持同步，从而实现加密信号的完全再现。
The auto-disturbance rejection controller is composed of three parts: tracking-differentiator, extended state observer and nonlinear state error feedback control law.
自抗绕控制器由三部分组成：跟踪微分器、扩张状态观测器和非线性状态误差反馈控制律。
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