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有關(guān)現(xiàn)場(chǎng)總線控制外文資料翻譯-全文預(yù)覽

  

【正文】 l system information shortage and integration of autocontrol system and enterprise management system solved, the qualification to realize integration of ERP and managementcontrol system presented. During the designing of the electricity control system, the thesis used the mode that made up of monitor system and control system, formatted a work that is bined by far concentrates control system and nearly control system .The monitor system chooses the functional monitoring software 一 the king monitor and the manmachine interface ,which operated conveniently .And the control system chooses dependably programmable logic controller and advance Profibus fieldbus to pletely control the spot equipments . Programmable Logic Controller (PLC) is based of relay logic control system。s operating machine39。s intelligence. 4. The highly decentralization of system structure 5. The strong antijamming At present, the most popular fieldbus in the world is based on OST model, Including physical layer, data link layer, application layer and etc. The FF, Profitbus, HART, CAN and LonWork are the most effective ones on this field. Profitbus, proposed by SIEMENS, is based on IS07498, which refers to OSI (open system interconnection) model and defines the specialty of physical transmission, protocol of bus wire39。 technology and advantage, introduces several popular Field Buses, designs the model of field control system, and puts forward three effective methods to integrate between the MCN amp。模糊邏輯算法由基本的 PLC指令來(lái)實(shí)現(xiàn)。值得指出, PLC 的輸出總是為增量值。這一轉(zhuǎn)換模塊的輸出,最后被收集和傳輸回上述的PLC。如我們知道的那樣,邏輯控制是 PLC一個(gè)值得注意的性能,它可被用于有效地處理模擬數(shù)據(jù)。程序循環(huán)通過(guò)掃描系統(tǒng)的輸入開(kāi)始,并將它們的狀態(tài)儲(chǔ)存在固定的存儲(chǔ)器位置(輸入圖像存儲(chǔ)器)。上位機(jī)選用功能強(qiáng)大的工控組態(tài) 軟件一一組態(tài)王和操作方便靈活的觸摸屏。通過(guò)該監(jiān)控網(wǎng)絡(luò),可實(shí)現(xiàn)對(duì)該水電站分居于八個(gè)不同壩段的閘門(mén)的運(yùn)行及運(yùn)行狀態(tài)的控制與監(jiān)視,從而使得該監(jiān)控系統(tǒng)在滿足水電站實(shí)際生產(chǎn)的各項(xiàng)要求,同時(shí)還保證了該系統(tǒng)具有相當(dāng)?shù)南冗M(jìn)性。論文根據(jù)所研究水電站閘門(mén)控制的具體技術(shù)要求,設(shè)計(jì)了適合該水電站的液壓?jiǎn)㈤]機(jī)系統(tǒng)。 隨著社會(huì)生產(chǎn)規(guī)模的擴(kuò)大、生產(chǎn)水平的提高,電氣控制技術(shù)和液壓技術(shù)都在非常迅速的發(fā)展?,F(xiàn)場(chǎng)總線的最大特點(diǎn)是標(biāo)準(zhǔn)化和公開(kāi)性,目前國(guó)際上流行的幾種現(xiàn)場(chǎng)總線均是以 OSI 模型為依據(jù)建立的,包括物理層、數(shù)據(jù)鏈路層和應(yīng)用層等。②開(kāi)放性、互可操作性與互用性 。 作為自動(dòng)化領(lǐng)域的熱點(diǎn)之一,現(xiàn)場(chǎng)總線己成為自動(dòng)化系統(tǒng)與分散的現(xiàn)場(chǎng)設(shè)備間信息交換的主要技術(shù)。 FCS 網(wǎng)絡(luò)模型,并提出了在控制網(wǎng)絡(luò)和信息網(wǎng)絡(luò)之間加入轉(zhuǎn)換接口、采用DDE 技術(shù)和使用統(tǒng)一的協(xié)議標(biāo)準(zhǔn)三種集成方式。 本文首先分析了當(dāng)前流行的 FCS網(wǎng)絡(luò)的結(jié)構(gòu)特點(diǎn)、技術(shù)特點(diǎn)和優(yōu)勢(shì),介紹了幾種較為流行的現(xiàn)場(chǎng)總線,構(gòu)建了企業(yè)生產(chǎn)的。與理論發(fā)展相對(duì)滯后形成對(duì)比的是,自動(dòng)化技術(shù)工具的蓬勃發(fā)展,在經(jīng)歷氣動(dòng)儀表控制、集中式數(shù)字控制系統(tǒng)到集散式控制系統(tǒng)后形成了新一代的網(wǎng)絡(luò)集成式全分布的現(xiàn)場(chǎng)總線控制系統(tǒng)?,F(xiàn)場(chǎng)總線具有以下特點(diǎn) :①快速性、實(shí)時(shí)性 。⑤較強(qiáng)的抗干擾性。該總線通過(guò)相應(yīng)的通訊模塊,與系統(tǒng)內(nèi)的遠(yuǎn)程控制設(shè)備以及其他廠商的單機(jī)控制設(shè)備相連,采用控制字的方式進(jìn)行通訊和控制,可節(jié)約大量控制電纜,并且通過(guò)良好的接地處理和保護(hù),具有極高的抗干擾能力。 文章從結(jié)合所研究的水電站的實(shí)際需要出發(fā),將先進(jìn)的現(xiàn)場(chǎng)總線技術(shù)、以太網(wǎng)技術(shù)與傳統(tǒng)的液壓技
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