An event‐triggered observer‐based output feedback control issue together with triggered input is investigated for a class of uncertain nonlinear systems subject to unknown external disturbances. Two separate event‐triggered conditions are located on the measurement channel and control channel, respectively. An event‐triggered extended state observer (ETESO) is employed to estimate unmeasurable states and compensate uncertainties and disturbances in real time while it is not required for real‐time output measurement. Then, combined with backstepping method and active disturbance rejection control, an output feedback control scheme is proposed, where an event‐triggered input is developed for reducing the communication rate between the controller and the actuator. The triggered instants are determined by a time‐varying event‐triggered condition. Two simulations, including a numerical example and an permanent‐magnet motor, are illustrated to verify the effectiveness of the proposed schemes.

中文翻译：

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通过事件触发的扩展状态观测器对一类不确定的非线性系统进行基于触发器的跟踪控制

针对一类受未知外部干扰影响的不确定非线性系统，研究了基于事件触发的基于观察者的输出反馈控制问题以及触发输入。两个独立的事件触发条件分别位于测量通道和控制通道上。事件触发的扩展状态观察器（ETESO）用于估计不可测量的状态，并实时补偿不确定性和干扰，而实时输出测量不需要它。然后，结合反步方法和主动干扰抑制控制，提出了一种输出反馈控制方案，其中开发了一个事件触发输入以降低控制器与执行器之间的通信速率。触发的瞬间取决于随时间变化的事件触发条件。