摘要： 设计了一套发酵控制系统,其中上位机采用工业通用组态软件“组态王”进行设计,现场控制部分采用OMRON公司的C200HE系列PLC。由于实际被控对象要求PH参数的控制具有很高的精度,因此针对发酵过程中PH值滞后、非线性、时变的特点,对PH参数采用参数自调整模糊控制,参数自调整模糊控制程序用VB6.0编程,而“组态王”与VB之间的数据交换通过动态数据交换DDE来实现。该套系统投入到某制药厂多粘菌素生产后效果良好,PH值控制误差达到±0.05PH,控制精度提高100％,取得了良好的经济效益。

关键词: DDE, 参数自调整模糊控制, PH, PLC

Abstract: This paper designs a series of ferment control system, Among them, the superstratum machine adopts configuration software-"King View" which is used in industry geneeally to design, the spot control part adopts C200HE PLC of OMRON company .Because the practical controlled object of PH asks for a high precision ,a parameter self-adjustment fuzzy system of PH is adopted,which aimed at the PH value in the process of ferment is lag, nonlinear, and time-variable, the parameter self-adjustment fuzzy control process adopts VB6.0, the data exchange between "King View" and "VB" adopts dynamic data exchange DDE to realize. This system is used by a pharmacy factory to produce mycetozoan , the result is good. The PH value control error margin attains the±0.05, control the accuracy increases 100%,and it obtaines good and economic benefit.

中图分类号: 

• TP273.5