塑料挤出生产线集散控制系统的研究

Study on A Distributed Control System of Plastics Extruding Lines

设计了塑料挤出生产线集散控制系统,它是基于西门子S7-200系列可编程控制器PLC、计算机PC和 WinCC人机界面设计工具的基础上,实现塑料挤出生产线集中管理,分散控制及在线远程自动监控。设计的控制系统包括塑料挤出生产过程中的3个必要工序:各段温度控制、电机驱动控制和计量加料控制,根据对象特性提出不同的控制方案,控制其工艺参数,使塑料挤出生产线运行更加灵活、稳定、安全,用户管理更加简单方便,并进一步提高控制精度和生产效率。

A design of a distributed control system（DCS）, which is a remotely automatic monitor and control system for a plastics extruding line, was introduced. The control system includes different ways to control the key technical parameter of three necessary parts in the product line, i. e. , temperature control in different parts, driver control, supplying and calculating material control, in order to make the product line more robust, stable and safe, facilitate the users more flexible and improve the control precision and oroductivity.