模糊PID控制器在火电厂主汽温控制中的应用

The Application of Fuzzy-PID Controller in the Temperature Control of Superheated Steam in Power Plant

把解决模糊控制中的强化作用与静态稳定性之间的矛盾作为研究方向,针对火电厂主汽温系统的大滞后、大惯性、非线性等特点,提出将模糊控制与常规PID控制相结合的思路,设计了模糊PID控制模型并与普通PID控制和简单的模糊控制进行了比较。从仿真结果中可以看出:这种方法是解决模糊控制中的强化调节作用与静态稳定性之间矛盾的有效方法。

To solve the contradiction between the intensifying and the static stabilizing effect of fuzzy control, considering the long time lag, big inertia and nonlinearity characteristic of fresh steam temperature as variables in fossil-fired power plants, and idea which combines the fuzzy control with normal PID control is proposed, and a fuzzy-PID control model has been designed. Simulation results show that, compared with normal PID and simple fuzzy control, this method presents an effective way of solving the contradiction between the intensifying and static stabilizing effect of fuzzy control.