【摘要】 由于水泵水轮机呈现强非线性特性,以及起停频繁、工况变化剧烈等运行特点,导致以线性系统理论为基础的传统控制规律面临控制品质恶化的问题。在建立可逆式机组的仿射非线性系统模型的基础上,应用微分几何方法研究了可逆式机组在几种典型大波动工况运行时的非线性系统精确线性化控制规律,仿真试验表明该非线性控制规律可以取得优良的动态性能。研究成果将非线性控制理论应用于可逆式机组的控制,为提高我国可逆式机组的运行水平具有重要的理论与工程应用价值。更多还原

【Abstract】 Since pump-turbines shows characteristics t strong non-linearity, frequent start and stop drastic, change with operating conditions, they result in control quality deteriorating problems in traditional control rule based on linear system theory. On the basis of the establishment of reversible unit affine nonlinear system model, exact linearization control rule of reversible unit nonlinear systems, under several typical large fluctuations conditions, is studied in this paper with the application of differential geometry. And the simulation results show that the nonlinear control rule can get excellent dynamic performance. The nonlinear control theory is applied to the control of reversible unit in the study achievements, which has important theoretical and engineering applications value in improving the operating level of reversible unit.更多还原