随着社会的进步和技术的发展，风机在工业生产中发挥着越来越重要的作用，但机组容量大的风机系统在运行过程中会出现不稳定运行状况，易造成安全事故从而造成人员伤亡和巨大经济损失。传统的解决方法是利用牺牲效率来确保安全运行，这已经与当今节能减排的大潮流不相符。因此，只有设计合适的保护装置和制定科学的运行调节方式才能确保风机安全、稳定、经济运行。而本文就是在此基础上提出了用模糊控制方法来控制防喘振的思想。 论文首先从离心风机喘振现象入手，介绍了离心风机发生喘振的原因和由此可能造成的巨大危害，重点研究了模糊控制理论在离心风机防喘振控制中的应用，并建立了系统模型，通过建立模糊规则库进行模糊推理、解模糊制成模糊控制表，并把模糊规则的设计以及控制表嵌入西门子S7-300 PLC。最后，通过MATLAB模拟仿真，对比模糊控制仿真和PID控制仿真结果，验证了本文所采用的的利用模糊控制离心风机喘振的可行性。

As the progress of society and the development of technique，The widely used draught fan is becoming more important, but the unstable situation might be happen in the large capacity draught fan system, the casualties will be made and the economic losses will be caused. The traditional solution is that the safety is ensured by the efficiency sacrificed, it is not accord with the trend of energy saving and emission reduction. Therefore, the safe, stable and economical running of draught fan are secured by the design of appropriate protective equipment and scientific adjust method. The ideas of anti surge are controlled by the fuzzy control method based on it are proposed in the thesis. From the centrifugal blower surge phenomena, the centrifugal blower surge reason is introduced and the huge harm will caused, the application of fuzzy control theory in the centrifugal blower anti surge control is researched deeply and the system model is built, by the fuzzy rule storage the fuzzy discursion is got along, the fuzzy resolved is made to fuzzy control table, the fuzzy rule design and control table are enchased in SIEMENS S7-300 PLC. Finally, by the MATLAB simulation, the fuzzy control simulation and PID control simulation results are compared, the feasibility of fuzzy control centrifugal blower surge used in the thesis is verified.