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工业控制机以过程为对象,这类系统的设计与通用计算机系统的主要区别是:首先要考虑系统的实时响应速度及其高可靠性。此外,对主机的速度要求、内存容量等要作科学的估算。根据国内外一些资料介绍及本人参加的几个控制机方案设计,谈以下粗浅看法。 1.可靠性及其精度 计算机系统设计中尽管有许多提高可靠性的方法,但主机的可靠性是不容忽视的。目前国内生产的控制机,通常还不能给出平均故障间隔时间
Industrial control machine to the process as the object, the design of such systems and general-purpose computer system, the main difference is: first of all to consider the system’s real-time response speed and high reliability. In addition, the speed of the host requirements, memory capacity to make a scientific estimate. According to some information at home and abroad and I participated in several control machine program design, talk about the following superficial view. 1. Reliability and its accuracy Although there are many ways to improve the reliability of computer system design, the reliability of the host can not be ignored. At present, the production of control machines, usually can not give the average time between failures