主汽温系统的区间Ⅱ型模糊免疫控制

Main Steam Temperature Control Based on Interval Type-2 Fuzzy Immune Control

针对火电厂主汽温被控对象大惯性、大滞后、时变以及采用常规PID串级控制难以取得满意效果等特点,为此设计了区间Ⅱ型模糊免疫-比例串级控制系统。该系统借鉴生物免疫反馈响应过程的调节规律,并采用区间Ⅱ型模糊系统逼近免疫响应中的非线性调节函数。仿真结果表明,系统具有较强的鲁棒性和很好的控制品质。

Since main steam temperature control systems of fossil power plants are characterized by large inertia, long time lag and variation with time, satisfying control effect can not be achieved with normal PID cascade control methods, the interval type-2 fuzzy immune-proportion control system is designed in this paper, the system is based on the immune feedback regulating law, and adopt type-2 fuzzy logic system to approximate the nonlinear function of the immune feedback, The results in the simulation show that the system has more robustness and better control Quality.