PLC专家控制在结晶生产中的应用

The Application of PLC Expert Control in Crystallization Production

针对结晶生产温度控制要求较高且工艺复杂,人工方式难以满足对温度冗长实时精确控制等生产问题,利用PLC为核心,结合变频器技术,通信技术,专家系统理论,根据晶体生产经验设计了基于专家系统原理的PLC控制系统,进而组建功能完善的工业系统控制网络,用于结晶生产。实际生产中表明此种控制方式很好的满足了温度实时精确控制的要求,缩短了生产的复杂流程,大大的提高了生产效率。本文通过该系统在某公司食用糖醇晶体实际生产应用为背景,介绍该系统控制生产的原理,硬件构成以及软件设计。

According to the control requirements of crystallization production and the process complex, the production problem that articial means is difficult to meet the lengthy real -time accurate control of temperature, use PLC as the core, combined with inverter tech- nology, communication technology,the expert system theory, design PLC control system based on the expert system principle, and then form the industrial system control network which is used for crystallization production. Production results indicate that the control mode meets the temperature control requirements and shorten complex process of crystallization production, greatly improve the production ef- ficiency. The background is that system has got satisfactory results in the actual production of crystal sugar alcohols, the paper introduces the principle of system control, hardware composition and software design.