水轮机水门非线性控制器设计

针对水轮发电机组水门调节的刚性水锤非线性模型，采用二阶扩张状态观测器进行动态反馈线性化，并设计了相应的预期动力学方程。然后基于弹性水锤模型进行仿真实验，并与精确反馈线性化方法比较。结果显示，在三相短路故障、负荷扰动的暂态过程中两种方法动态品质相近，而动态反馈线性化方法在参数变化上具有较强的鲁棒性。

DESIGN OF NONLINEAR CONTROL FOR HYDROTURBINE GOVERNOR

Based on rigid hammer nonlinear model of a hydroturbine governor, a second order extended state observer (ESO) is used for dynamic feedback linearization. In addition, the desired dynamical equation is designed. Then, based on the elastic hammer model, the numerical simulations demonstrate that the performance of the method is similar to that of the exact feedback linearization method in the transient process of a three-phase short circuit fault and load disturbances, and the method is more robust against model parameter perturbations.