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  本文關鍵詞： Powerlink 工業(yè)以太網(wǎng) 實時性 集散控制系統(tǒng)　出處：《東華理工大學》2016年碩士論文　論文類型：學位論文

【摘要】：一直以來,現(xiàn)場總線技術廣泛應用于工業(yè)控制領域,但隨著工業(yè)自動化的發(fā)展,現(xiàn)場總線技術已經(jīng)無法滿足工業(yè)控制過程中高速、高實時、強確定性、大容量數(shù)據(jù)傳輸?shù)男枨�。工業(yè)以太網(wǎng)技術以其通信速率高、實時性強、確定性強、開放性好、資源共享能力強等特點在工業(yè)控制領域越來越受到關注。Powerlink憑借其實時性好、確定性強、協(xié)議開源、無需任何授權費用成為工業(yè)以太網(wǎng)的代表,在工業(yè)控制領域有著非常廣泛的應用前景。本文針對Powerlink實時以太網(wǎng)協(xié)議及應用進行深入分析,主要研究內(nèi)容如下:(1)通過對Powerlink協(xié)議基礎知識的學習,為Powerlink協(xié)議的研究打下堅實的基礎。(2)Powerlink協(xié)議支持兩種工作模式,即基于請求/應答模式(PReq/PRes)和基于定時主動上報模式(PRC),本文對兩種模式的實現(xiàn)機制進行介紹,通過性能對比分析,得出兩種工作模式各自的優(yōu)點和缺點,為不同的應用場合提供了選擇依據(jù)。(3)通過搭建Powerlink通信網(wǎng)絡,介紹Powerlink協(xié)議在Linux操作系統(tǒng)上的具體實現(xiàn)過程。基于Windows操作系統(tǒng)下進行主從站通信測試,使用Wireshark網(wǎng)絡診斷工具獲取網(wǎng)絡數(shù)據(jù)包,對數(shù)據(jù)包的內(nèi)容進行分析。(4)將Powerlink協(xié)議應用于NT300集散控制系統(tǒng),以解決網(wǎng)絡負載過重、實時性差的問題。介紹Powerlink協(xié)議的兩種網(wǎng)關設計方法,在此基礎上對集散控制系統(tǒng)的整體網(wǎng)絡架構進行設計。
[Abstract]:Field-bus technology has been widely used in industrial control field, but with the development of industrial automation, fieldbus technology has been unable to meet the high speed, high real-time and strong certainty in the industrial control process. Industrial Ethernet technology is characterized by its high communication rate, high real-time, strong certainty and good openness. Resource sharing ability has attracted more and more attention in the field of industrial control. Powerlink has the advantages of good real-time, strong certainty and open source protocol. As the representative of industrial Ethernet without any authorization fee, it has a very wide application prospect in the field of industrial control. In this paper, the protocol and application of Powerlink real-time Ethernet are deeply analyzed. The main research contents are as follows: 1) Learning the basic knowledge of Powerlink protocol. To lay a solid foundation for the research of Powerlink protocol. That is, based on the request / response mode PReq / PResand based on the timing of the active reporting mode, this paper introduces the implementation mechanism of the two modes, through performance comparison analysis. The advantages and disadvantages of the two working modes are obtained, which provide the basis for the selection of different applications. 3) through the establishment of Powerlink communication network. The implementation process of Powerlink protocol on Linux operating system is introduced. The master-slave communication test based on Windows operating system is carried out. Wireshark network diagnosis tool is used to obtain the network data packet, and the contents of the data packet are analyzed. 4) the Powerlink protocol is applied to the NT300 distributed control system. In order to solve the problem of overloaded network and poor real-time, two gateway design methods of Powerlink protocol are introduced, and the overall network architecture of distributed control system is designed on this basis.
【學位授予單位】：東華理工大學
【學位級別】：碩士
【學位授予年份】：2016
【分類號】：TP273;TP393.11

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