Considering the control problem in simulating cracking furnace, the method of designing two-degree freedom IMC controller and adjusting parameters was proposed; by means of tuning parameters, the designed controller can control system and track the setting value and restrain the disturbance. Having this method applied to the steam cracking unit can decrease the fluctuation in heating the unit up and eliminate the disturbance in keeping the unit warm,this can shorten the heating up time and can improve the production efficiency.%针对中石化某裂解装置的控制问题,通过实测模型,根据内模控制理论,提出一种二自由度的内模控制器的设计和参数整定方法.通过参数整定,所设计的控制器可以控制系统,同时具有良好的设定值跟踪特性和抑制干扰特性.将该二自由度控制器设计方法应用于蒸汽裂解装置中,减小了装置升温过程的波动,克服了保温过程的扰动,并且缩短了升温时间,提高了生产效率.
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