计算机科学 ›› 2014, Vol. 41 ›› Issue (7): 153-156.doi: 10.11896/j.issn.1002-137X.2014.07.031
温世刚,罗继亮,倪会娟,陈雪琨
WEN Shi-gang,LUO Ji-liang,NI Hui-juan and CHEN Xue-kun
摘要： 针对可编程逻辑控制器(PLC)的接通延时定时器(TON),提出了其普通Petri网建模方法。将状态变量描述为库所对,将TON中的指令运算描述为变迁,从而将TON模块描述为一个普通Petri网结构。结果表明该Petri网能够准确地描述TON的动态行为,从而为PLC梯形图程序的形式化设计或验证提供了建模方法。
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