CAJ | 학술논문

提出一种直接以AOV（Activity On Vertex）图存储PLC（Programmable Logic Controller）梯形图的方法。编辑梯形图的同时，修改AOV图，然后根据AOV图的拓扑结构更新梯形图图符坐标，最后进行绘制显示。该方法无需进行梯形图向AOV图的转换，通过操作规则的约束来替代语法的检查，使梯形图的编辑更加便捷和规范。详细介绍了AOV图的编辑过程和坐标的更新算法。对AOV图向二叉树的转换算法进行修改，使其能适应于所有AOV图，并给出了相应的实例。
제출일충직접이AOV（Activity On Vertex）도존저PLC（Programmable Logic Controller）제형도적방법。편집제형도적동시，수개AOV도，연후근거AOV도적탁복결구경신제형도도부좌표，최후진행회제현시。해방법무수진행제형도향AOV도적전환，통과조작규칙적약속래체대어법적검사，사제형도적편집경가편첩화규범。상세개소료AOV도적편집과정화좌표적경신산법。대AOV도향이차수적전환산법진행수개，사기능괄응우소유AOV도，병급출료상응적실례。
A PLC ladder diagram （LD） editing method using AOV diagraph to restore LD directly is proposed. AOV diagraph will be changed when the LD is being modified. Then updates LD symbol coordinates according to the structure of the AOV dia- graph and display the LD to user. The method does not need a conversion from LD to the AOV diagraph and alternates syntax check by the constraints of the operating rules, which makes LD editing more convenient and norms. The AOV diagraph＇s editing process and coordinates update algorithm are described in detail. A modified conversion algorithm from AOV diagraph to binary tree is presented. The algorithm can adapt to all kinds of AOV diagraph, and a corresponding instance is given.