描述

MKD071B-061-GP0-KN

為了保證容錯系統(tǒng)具有高可靠性，必須盡量減少系統(tǒng)的平均修復時間MTBR。要做到這一點，在設(shè)計上應努力提高單元的獨立性、可修復性、故障可維護性。實現(xiàn)故障部件的在線維護和更換也是冗余技術(shù)的重要組成部分，它是實現(xiàn)控制系統(tǒng)故障部件快速修復技術(shù)的關(guān)鍵。部件的熱插拔功能可以在不中斷系統(tǒng)正?？刂乒δ艿那闆r下增加或更換組件，使系統(tǒng)平穩(wěn)地運行。

? ? 5）故障隔離技術(shù)

? ? 冗余設(shè)計時，必須考慮工作、備用部件之間的故障應該做到盡可能互不影響或影響的概率相當?。?.01%），即可認為故障是隔離的。這樣可以保證：處于備用狀態(tài)的部件發(fā)生故障時，不會影響冗余工作部件或其他關(guān)聯(lián)部件的正常運行，保證冗余的有效性。

? ? 3：冗余技術(shù)在控制系統(tǒng)中的應用實現(xiàn)分析

? ? 通過控制系統(tǒng)冗余原理與方法的具體分析可以看到，系統(tǒng)的可用性在很大程度上取決于那些MTBF值較低而能對系統(tǒng)正常運行造成重大影響的部件，如主控制卡、網(wǎng)絡(luò)、電源、通訊轉(zhuǎn)發(fā)卡等。在系統(tǒng)設(shè)計中對關(guān)鍵部件進行冗余設(shè)計，可以大大提高系統(tǒng)的可用性。

? ? 下面以SUPCONJX-300X為例分析冗余的實現(xiàn)方式。

? ? SUPCONJX-300X型集散控制系統(tǒng)[1]的各個部件的冗余，實現(xiàn)了從電源、主控制器、過程控制網(wǎng)絡(luò)，直至I/O卡件的冗余。

? ? JX-300X型DCS采用全智能化、全數(shù)字化設(shè)計，在此基礎(chǔ)上成功地實現(xiàn)了卡件的熱插拔、故障診斷、信息同步等前文提到的各項技術(shù)。該系統(tǒng)采用典型控制系統(tǒng)三層模型，每個層次內(nèi)均可冗余配置，而層次之間采用全冗余連接。即整個系統(tǒng)內(nèi)以冗余過程控制網(wǎng)絡(luò)（SCnet）和冗余現(xiàn)場I/O總線(SBUS)為高可靠的連接通道，系統(tǒng)內(nèi)各個部件的運行和部件之間點對點連接都可冗余。

? ? 根據(jù)控制系統(tǒng)內(nèi)各個部件功能定位的不同，采用了具體方式有所差別，具體策略為：

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保?證?全新原裝進口,
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優(yōu)勢價格，大量現(xiàn)貨。

主營DCS系統(tǒng)配件
機器人系統(tǒng)配件
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專業(yè)銷售進口DCS? PLC系統(tǒng)備件模塊

PLC模塊，可編程控制器，CPU模塊，IO模塊，AI模塊，通訊模塊。AB/施耐德/ABB/GE/本特利/西屋/英維斯/霍尼韋爾/黑馬/FU克斯波羅

15天包退換一年質(zhì)保大量現(xiàn)貨? 國內(nèi)實力庫存商家

MKD071B-061-GP0-KN

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