目前燃煤火电厂外排灰水普遍存在pH值超标的问题。针对控制过程的非线性、时变性、大滞后、多变量紧密耦合的特点,采用模糊控制方案。介绍了基于LabVIEW的模糊逻辑工具箱(FuzzyLogicforGToolkit)的使用方法,并利用它设计出模糊控制器。结合LabVIEW开发平台,设计出灰水pH模糊控制系统,实现了对灰水pH的有效控制。 At present, there is a widespread problem that the ash discharged from the coal-fired power plants is out of standard. Aiming at the non-linear, time-varying, large-delay and multi-variable close coupling of control process, the fuzzy control scheme is adopted. Introduced the use of fuzzy logic toolkit based on LabVIEW (FuzzyLogicforGToolkit), and used it to design a fuzzy controller. Combined with the LabVIEW development platform, a gray-water pH fuzzy control system was designed to effectively control the pH of gray water.