【摘要】：起重運(yùn)輸機(jī)械作為物流過(guò)程中的主要運(yùn)輸機(jī)械,近年來(lái)得到了很大的發(fā)展。關(guān)于起重機(jī)控制系統(tǒng)的研究,也成為一個(gè)研究熱點(diǎn)。隨著中國(guó)經(jīng)濟(jì)的發(fā)展,國(guó)內(nèi)外先進(jìn)技術(shù)的交流不斷加深,一些國(guó)際標(biāo)準(zhǔn)的引入已然成為了必然趨勢(shì),IEC61131-3標(biāo)準(zhǔn)就是一個(gè)。該標(biāo)準(zhǔn)對(duì)PLC編程進(jìn)行了規(guī)范,能夠支持標(biāo)準(zhǔn)的軟件模型和編程模型,并對(duì)PLC控制系統(tǒng)的五種編程語(yǔ)言做了深入的研究和規(guī)范,這為國(guó)內(nèi)起重機(jī)PLC控制系統(tǒng)的研究指出了一個(gè)方向。 本文將IEC61131-3標(biāo)準(zhǔn)引入到起重機(jī)PLC控制系統(tǒng)當(dāng)中來(lái),結(jié)合IEC61131-3標(biāo)準(zhǔn)的特點(diǎn),提出了基于IEC61131-3標(biāo)準(zhǔn)的PLC控制系統(tǒng)編程環(huán)境的設(shè)計(jì)。同時(shí)采用面向?qū)ο笤O(shè)計(jì)方法,通過(guò)分析設(shè)計(jì)各個(gè)對(duì)象、類比各對(duì)象間的關(guān)系以及了解對(duì)象之間的通訊,來(lái)完成PLC控制系統(tǒng)編程環(huán)境的總體設(shè)計(jì)。以下是本文的主要研究?jī)?nèi)容： 1)針對(duì)最常用的梯形圖和指令表兩種標(biāo)準(zhǔn)編程語(yǔ)言,重點(diǎn)研究如何實(shí)現(xiàn)編程系統(tǒng)模塊,并對(duì)這兩種編程語(yǔ)言的相互翻譯轉(zhuǎn)換算法提出理論設(shè)計(jì)。梯形圖和指令表采用XML語(yǔ)言進(jìn)行描述,二者的轉(zhuǎn)換前,首先對(duì)程序XML文檔進(jìn)行遍歷操作,用二叉樹的葉結(jié)點(diǎn)和根結(jié)點(diǎn)分別來(lái)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(biāo)準(zhǔn)的IL語(yǔ)言編譯器設(shè)計(jì)構(gòu)思,針對(duì)編譯器編譯過(guò)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(shí)別源程序,并采用基于上下無(wú)關(guān)文法的自底向上分析源程序語(yǔ)法和語(yǔ)義,實(shí)現(xiàn)了用戶所編寫的PLC程序能準(zhǔn)確地轉(zhuǎn)換成PLC本體所能讀取的機(jī)器代碼。 3)在起重機(jī)半實(shí)物仿真控制系統(tǒng)中采用PROFIBUS DP通訊,重點(diǎn)研究PROFIBUS主站為1類主站——CPU315-2DP時(shí),如何在預(yù)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(fù)責(zé)總線通訊進(jìn)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(lái)進(jìn)行。通過(guò)上層軟件與底層硬件平臺(tái)間的通訊編程,實(shí)現(xiàn)了該編程環(huán)境在起重機(jī)半實(shí)物仿真系統(tǒng)中的安全可靠運(yùn)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(xué)位授予單位】：西南交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2011
【分類號(hào)】：TH21

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本文編號(hào)：2380771