記號圖到階梯圖的自動物件轉換

Abstract

本論文提出一套基於JAXB技術，從給定的記號圖到階梯圖的自動物件轉換法。在自動轉換過程中基本上共分為五個主要步驟。第一步驟，記號圖可以透過XML技術輕易地轉換為PNML文件。第二步驟，利用JAXB技術可將PNML文件自動轉換為記號圖物件。第三步驟，記號圖物件經由物件轉換法轉換為階梯圖物件。第四步驟，階梯圖物件利用JAXB技術自動產生PLCopenXML文件。第五步驟，透過XML技術可將PLCopenXML文件轉換為階梯圖。除第三步驟外，其餘步驟皆已具備成熟的資訊技術。在第三步驟的物件轉換成果是來自於裴氏圖法則矩陣的數學特性研究。上述五個連續步驟使得記號圖到階梯圖的自動轉換成為可行。

An automated object-based transformation based on JAXB technology is proposed for transforming a given marked graph to a desired ladder diagram. Essentially there are five major steps involved in this transformation. First, a marked graph is easily transformed into a Petri Net Markup Language (PNML) document through traditional XML technology. Second, the PNML file is transformed into objects automatically using JAXB technology. Third, the marked graph oriented objects are transformed into ladder diagram oriented objects. Fourth, the ladder diagram objects are used to generate its PLCopen XML document using JAXB technology. Fifth, the PLCopen XML document is transformed into a ladder diagram through XML technology. Except the third step, all others are well-established information technologies. The significant outcome of object-based transformation comes from the study of the mathematical properties of the rule matrix in Petri Nets. The five chained steps make the automated transformation from marked graphs to ladder diagrams feasible.