摘要
用４８６微机作上位机、可编程控制器（ＰｒｏｇｒａｍｍａｂｌｅＣｏｎｔｒｏｌｅｒ，以下简称ＰＣ）作下位机建立两级控制系统，并通过ＲＳ—２３２Ｃ异步串行通讯接口连接上下位机，实现了挤出过程逻辑程控和型坯形状、壁厚控制以及中空塑料容器吹胀成型控制；介绍了中空吹塑成型的基本原理、控制系统构成、间隙式型坯壁厚控制器结构，并给出了上下位机串行通讯程序流程；对软硬件设计、调试和系统可扩展性进行了讨论．
The two stage control system, with 486 microcomputer as the master and programmable controller as the slave, is studied. The master communicates with the slave through RS 232C asynchronous series communication interface to realize logical sequence control of extrusion process, control of parison shape and thickness, control of hollow plastic container blow molding,etc. The basic principle of hollow blow molding, the constitution of control system and the construction of intermittent parison thickness controller are described, and the series communication program flow charts between master and slave are presented. Finally, the discussions about the soft hardware debugging and the system expansibility are made.
基金
机械工业部科技基金
关键词
塑料
中空吹瓶机
设计
计算机控制
通讯程序
plastic parison
blow molding
series communication
programmable controller
microcomputer control
