一种模糊控制算法在主汽温控制系统中的应用

A Fuzzy Control Algorithm and Its Application to Main Steam Temperature Control System

针对主汽温具有影响因素多、时滞较大及模型时变的特点 ,提出了主汽温自整定模糊控制算法 .该算法利用解析公式形式 ,对主汽温偏差及其变化率、导前汽温变化率进行了综合考虑 ,并可根据运行工况自动调整各模糊变量的加权因子 。

Taking account of long time delay, disturbance, and model changing of the main steam system in a power plant, a new self tuning fuzzy control algorithm is introduced. The temperature bias and temperature varying speed of the main and front steams are also taken into account in the formula. Coefficients of the fuzzy variables can be adjusted automatically in the algorithm. Results of this method are better than ordinary controllers.