模糊自适应补偿控制在炉内脱硫系统中的应用

Application of Fuzzy Adaptive Compensation Control in Furnace Desulfurization System

针对循环流化床机组炉内脱硫过程动态特性具有大迟延、大惯性、时变、非线性等特点,提出了一种基于模糊PID增量自适应补偿的炉内脱硫控制系统设计方法。采用Matlab/Simulink对某300 MW循环流化床机组炉内脱硫系统3种典型工况下的数学模型进行控制仿真。仿真结果表明,该方法在给定值跟踪性能、单位阶跃响应的动态和稳态性能方面,特别是在抗干扰和模型自适应方面都优于常规PID控制和模糊PID控制。

According to the dynamic characteristics of furnace desulfurization process of circulating fluidized bed unit,e. g.,large time delay,large inertia,time varying,and nonlinearity,the design method of control system based on fuzzy PID incremental adaptive compensation is proposed for furnace desulfurization. Control simulation of the mathematical models of three kinds typical operation condition for furnace desulfurization in certain 300 MW circulating fluidized bed unit are conducted by adopting Matlab / Simulink. The results show that the method is better than conventional PID control and fuzzy PID control in various aspects,including the set point tracking performance,dynamic and steady performance of unit step response,especially the anti-interference and model adaptivity.