一、概述近年来,由于微型计算机广泛地用于工业过程自动控制,产生了以微型计算机为基础的集中分散型综合控制系统,简称“集散系统”。近来也有命名为“分散型控制系统”。这两种名词及其含义是相似的。自七十年代末至八十年代初它发展得非常快。美、英、日等国近年来都重点发展了总体分散控制系统。以日本为例,横河的CENTUM系统,东芝公司的TOSDIC,山武公司的TDCS-2000,富士公司的MICREX,北辰的900/TX,日立公司的ΣSEMES。这些系统在结构的研制方针上大体一致。即仪表与计算机相结合,3C相结合,硬件与软件相结合。因此以微处理机为核心的分散型控制系统,实现了控制功能的 I. Overview In recent years, as microcomputers are widely used in the automatic control of industrial processes, a microcomputer-based centralized decentralized integrated control system has been produced, referred to as “distributed system.” Recently, it has also been named “decentralized control system.” These two terms and their meanings are similar. It has developed very fast since the late seventies and early eighties. In recent years, the United States, Britain, Japan and other countries have all focused on the development of an overall decentralized control system. Take Japan as an example, Yokogawa’s CENTUM system, Toshiba’s TOSDIC, Yamatake’s TDCS-2000, Fuji’s MICREX, North Star’s 900 / TX and Hitachi’s ΣSEMES. These systems are broadly consistent in their structure development guidelines. That the combination of instrumentation and computers, 3C combination, a combination of hardware and software. Therefore, the microprocessor-based decentralized control system to achieve the control function