压水堆蒸汽发生器水位模糊控制器的设计方法

Fuzzy controller design method for PWR steam generator level control

根据压水堆蒸汽发生器的简化数学模型,将一种模糊控制器的系统化设计方法用于蒸汽发生器水位的控制。该方法将模糊控制器的设计分解为各个独立子系统的线性最优控制器(LQR)的设计,不仅大大简化了模糊控制器的设计,而且能够保证模糊控制系统的渐进稳定性。在快速加负荷和突然甩负荷的仿真实验中,该方法的控制效果在超调和反应速度方面明显优于已有的分层模糊自适应控制,验证了该方法的有效性。

A fuzzy controller method was used with a simplified model to design a pressurized-water reactor （PWR） steam generator water level controller. In this method, the global fuzzy model is decomposed into a set of linear sub-models whose linear-quadratic regulators （LQR） can be independently designed, which simplifies the fuzzy controller design. Furthermore, the method gives a sufficient and necessary condition to guarantee the stability of the global fuzzy control systems. Simulation results show that the method provides better control than the hierarchical adaptive fuzzy control scheme, especially on the overshoot and response time.