In order to improve the digital sulphitation control precision, to avoid local perturbation problems caused by unstable flow of mixed juice and valve switch, etc., a Fuzzy-PID combined algorithm is proposed based on fuzzy control. This fuzzy control strategy can overcome the deficiencies that a conventional PID control doesn’t achieve efficiently, such as a smooth and stable control of sulfur smoked process. The results of MATLAB simulation and industrial field application proved that Fuzzy-PID control has the characteristics of flexibility, fast response, adaptability, etc. with good control effect.%为了提高数字式硫熏中和控制系统的控制精度，同时避免混合汁入汁不稳、阀门开关等局部扰动问题，并针对常规 PID 控制难以实现平滑稳定的硫熏中和控制效果，运用一种基于模糊控制的Fuzzy-PID复合控制算法，有效弥补了常规PID控制的不足。通过MATLAB仿真分析与工业现场的使用，证明Fuzzy-PID具备控制灵活、响应速度快、适应性强等优点，取得了良好的控制效果。
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