针对电力系统的强非线性和不确定性的特点，直接对其非线性不确定对象设计了非线性状态PI励磁汽门协调控制器。
As for the strong nonlinear and uncertain characteristic of the power system, the nonlinear state PI coordinated controller of excitation and valve is proposed in this paper.
网络控制系统具有很多不确定性，对控制器的鲁棒性设计提出了新的挑战。
The networked control systems have many uncertain characteristics, so there is a new challenge to the design of robust controller.
实验结果证明，这一控制器跟踪精度高，并且对系统的非线性和不确定性表现出很强的鲁棒性。
The experimental results demonstrate that this nonlinear controller is of fine robustness and a high degree of tracking accuracy.
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