应用于主从机控制系统的共享RAM设计与实现  

Design and Realization of Sharing RAM Applied in Master-slave CPU Control System

作　　者：包晔峰[1] 陈俊生[1] 张强[1] 蒋永锋[1] 

机构地区：[1]河海大学机电工程学院,江苏常州213022

出　　处：《自动化仪表》2010年第3期60-62,65,共4页Process Automation Instrumentation

摘　　要：为了适应工业控制系统复杂性和实时性的要求,设计了一款基于共享RAM芯片IDT71342的主从机控制系统。该系统采用模块化设计的硬件架构,解决了主从CPU间大量数据交换的问题,实现了将实时数据采集和反馈控制管理相分离的目的。运行结果表明,共享RAM设计能较好地满足系统数据通信对实时性和可靠性的要求。A master-slave CPU control system based on sharing RAM chip IDT71342 has been designed for satisfying the requirements of complieacy and real-time performance for industrial control systems. The design solves the exchange issue of huge amount of data between master and slave CPU by adopting modular hardware architecture, and implements detachment of real-time data acquisition and feedback control management. The result of operation shows that the design of sharing RAM well meets the requirements of real-time performance and reliability for communication of systematic data.

关 键 词：双机通信 共享RAM 数据通信 访问竞争 令牌仲裁 地址映射 

分 类 号：TP23[自动化与计算机技术—检测技术与自动化装置] TP274.2[自动化与计算机技术—控制科学与工程]