摘要
在全球信息化背景下,工业控制系统安全稳定运行至关重要,PLC作为工业控制系统中重要的基础性控制设备,其高可用性值得关注和探讨。文章从冗余方向进行系统高可用性研究,对PLC的基本结构和工作原理进行了深入剖析,分析其脆弱性;对不同冗余机制进行了研究,说明如何增加系统的高可用性;给出了PLC在冗余方面的未来研究趋势及展望。
In the context of global informatization,the safe and stable operation of industrial control systems is crucial.As an important foundational control equipment in industrial control systems,PLC’s high availability deserves attention and exploration.The paper conducts research on system high availability from the perspective of redundancy.Firstly,it deeply analyzes the basic structure and working principle of PLC,analyzes its fragility,and then studies different redundancy mechanisms to explain how to increase system high availability.Finally,it presents the future research trends and prospects of PLC in redundancy.
作者
黑志杰
贾德胜
黄兵
王欣
李闯
封成玉
HEI Zhijie;JIA Desheng;HUANG Bing;WANG Xin;LI Chuang;FENG Chengyu(Zhongdian Intelligent Technology Co.,Ltd.,Beijing 102209,China;Sixth Research Institute,China Electronics Information Industry Group Co.,Ltd.,Beijing 102209,China)
关键词
可编程控制系统
高可用性
冗余
programmable control system
high availability
redundancy
