针对国产中小型电厂锅炉时变性强、大滞后、非线性、多变量耦合、强干扰而难于精确建模、难于控制的特点 ,提出了“带有智能权函数的Fuzzy PID Smith预估器”的复合控制策略。现场运行效果和仿真结果表明 ,该方法能有效地提高系统稳态精度 ,使系统具有较强的鲁棒稳定性 ,并具有响应速度快、超调量小等特点 In view of the characteristics of domestic small and medium-sized power plant boilers such as strong degeneration, big lag, nonlinearity, multivariable coupling, strong interference but difficult to accurately model and difficult to control, a “Fuzzy PID Smith Predictor with Intelligent Weighting Function” is proposed. Compound control strategy. The field operation results and simulation results show that this method can effectively improve the steady-state accuracy of the system and make the system robust and stable. The method has the advantages of fast response and small overshoot