【摘要】：起重運輸機械作為物流過程中的主要運輸機械,近年來得到了很大的發(fā)展。關(guān)于起重機控制系統(tǒng)的研究,也成為一個研究熱點。隨著中國經(jīng)濟的發(fā)展,國內(nèi)外先進技術(shù)的交流不斷加深,一些國際標準的引入已然成為了必然趨勢,IEC61131-3標準就是一個。該標準對PLC編程進行了規(guī)范,能夠支持標準的軟件模型和編程模型,并對PLC控制系統(tǒng)的五種編程語言做了深入的研究和規(guī)范,這為國內(nèi)起重機PLC控制系統(tǒng)的研究指出了一個方向。 本文將IEC61131-3標準引入到起重機PLC控制系統(tǒng)當中來,結(jié)合IEC61131-3標準的特點,提出了基于IEC61131-3標準的PLC控制系統(tǒng)編程環(huán)境的設計。同時采用面向?qū)ο笤O計方法,通過分析設計各個對象、類比各對象間的關(guān)系以及了解對象之間的通訊,來完成PLC控制系統(tǒng)編程環(huán)境的總體設計。以下是本文的主要研究內(nèi)容： 1)針對最常用的梯形圖和指令表兩種標準編程語言,重點研究如何實現(xiàn)編程系統(tǒng)模塊,并對這兩種編程語言的相互翻譯轉(zhuǎn)換算法提出理論設計。梯形圖和指令表采用XML語言進行描述,二者的轉(zhuǎn)換前,首先對程序XML文檔進行遍歷操作,用二叉樹的葉結(jié)點和根結(jié)點分別來反映梯形圖的圖形元素及串并聯(lián)邏輯關(guān)系,然后遍歷二叉樹即可完成轉(zhuǎn)換。 2)提出一種基于IEC61131-3標準的IL語言編譯器設計構(gòu)思,針對編譯器編譯過程的分析與綜合兩關(guān)鍵部分,在分析部分的詞法分析中采用正則法則識別源程序,并采用基于上下無關(guān)文法的自底向上分析源程序語法和語義,實現(xiàn)了用戶所編寫的PLC程序能準確地轉(zhuǎn)換成PLC本體所能讀取的機器代碼。 3)在起重機半實物仿真控制系統(tǒng)中采用PROFIBUS DP通訊,重點研究PROFIBUS主站為1類主站——CPU315-2DP時,如何在預定的周期內(nèi)讀取從站工作信息或者向從站發(fā)送參數(shù),主站負責總線通訊進行控制和管理,與從站的數(shù)據(jù)交換采用從站輸出緩沖區(qū)來進行。通過上層軟件與底層硬件平臺間的通訊編程,實現(xiàn)了該編程環(huán)境在起重機半實物仿真系統(tǒng)中的安全可靠運行。
[Abstract]:As the main transportation machinery in the process of logistics, crane transport machinery has been greatly developed in recent years. The research on crane control system has also become a research hotspot. With the development of China's economy, the exchange of advanced technology at home and abroad is deepening, and the introduction of some international standards has become an inevitable trend, IEC61131-3 standard is a. This standard has carried on the specification to the PLC programming, can support the standard software model and the programming model, and has made the thorough research and the specification to the five programming languages of the PLC control system. This pointed out a direction for the research of PLC control system of crane in China. In this paper, the IEC61131-3 standard is introduced into the PLC control system of crane. Combining with the characteristics of IEC61131-3 standard, the programming environment of PLC control system based on IEC61131-3 standard is designed. At the same time, the overall design of the programming environment of PLC control system is accomplished by analyzing and designing each object, comparing the relationship between the objects and understanding the communication between the objects by using the object-oriented design method. The following is the main research contents of this paper: 1) aiming at the most commonly used trapezoidal diagram and instruction table two standard programming languages, the emphasis is on how to realize the programming system module. A theoretical design of the translation algorithm for the two programming languages is presented. The trapezoid diagram and instruction table are described by XML language. Before the conversion, the program XML document is traversed first, and the leaf node and root node of the binary tree are used to reflect the graph elements of trapezoid diagram and the logical relation of series-parallel connection, respectively. Then traverse the binary tree to complete the transformation. 2) this paper presents a design idea of IL compiler based on IEC61131-3 standard. Aiming at the two key parts of compiler compilation process analysis and synthesis, the regular rule is used to identify the source program in the lexical analysis of the analysis part. A bottom-up analysis of source program syntax and semantics based on upper and lower independent grammars is used to realize that the PLC program written by the user can be translated into machine code which can be read by PLC ontology accurately. 3) in the semi-physical simulation control system of crane, PROFIBUS DP communication is adopted. When the PROFIBUS master station is a class 1 master station-CPU315-2DP, how to read the slave station operation information or send parameters to the slave station in a predetermined period is studied. The master station is responsible for the control and management of bus communication, and the data exchange with the slave station is carried out by the slave output buffer. Through the communication programming between the upper software and the underlying hardware platform, the safe and reliable operation of the programming environment in the hoist hardware-in-the-loop simulation system is realized.
【學位授予單位】：西南交通大學
【學位級別】：碩士
【學位授予年份】：2011
【分類號】：TH21

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本文編號：2380771