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《基于plc變頻調(diào)速恒壓供水控制系統(tǒng)的設(shè)計(jì)(經(jīng)典)》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在行業(yè)資料-天天文庫(kù)。
1、洛陽(yáng)理工學(xué)院畢業(yè)設(shè)計(jì)（論文）I基于plc恒壓供水變頻控制系統(tǒng)設(shè)計(jì)摘要隨著社會(huì)經(jīng)濟(jì)的迅速發(fā)展，人們對(duì)供水質(zhì)量和供水系統(tǒng)可靠性的要求不斷提高。再加上目前能源緊缺，利用先進(jìn)的自動(dòng)化技術(shù)、控制技術(shù)以及通訊技術(shù)，設(shè)計(jì)高性能、高節(jié)能、能適應(yīng)不同領(lǐng)域的恒壓供水系統(tǒng)成為必然趨勢(shì)。本論文依據(jù)供水要求，設(shè)計(jì)了一套由PLC、變頻器、遠(yuǎn)傳壓力表、多臺(tái)水泵機(jī)組等主要設(shè)備構(gòu)成的全自動(dòng)變頻恒壓供水，具有全自動(dòng)變頻恒壓運(yùn)行、自動(dòng)工頻運(yùn)行和現(xiàn)場(chǎng)手動(dòng)控制等功能。系統(tǒng)有效地解決了傳統(tǒng)供水方式中存在的問(wèn)題，并具有多種輔助功能，增強(qiáng)了系統(tǒng)的可靠性。論文分析了多泵供水方式的各種供水狀態(tài)及轉(zhuǎn)換條件，分析了電機(jī)由變頻轉(zhuǎn)工頻運(yùn)
2、行方式的切換過(guò)程及存在的問(wèn)題。給出了實(shí)現(xiàn)有效狀態(tài)循環(huán)轉(zhuǎn)換控制的電氣設(shè)計(jì)方案和PLC控制程序設(shè)計(jì)方案。論文還提出了一些增強(qiáng)系統(tǒng)運(yùn)行可靠性的措施。關(guān)鍵詞：可編程序控制器,變壓變頻調(diào)速,恒壓供水,PLC洛陽(yáng)理工學(xué)院畢業(yè)設(shè)計(jì)（論文）IIPLC-BASEDINVERTERCONTRLCONSTANTPRESSUREWATERSUPPLYSYSTEMDESIGNABSTRACTWiththerapidsocio-economicdevelopmentofwaterqualityandwatersupplysystemstoimprovereliabilityrequirements.Ina
3、ddition,thecurrentenergyshortage,theuseofadvancedautomationtechnology,controltechnologyandcommunicationtechnology,thedesignofhighperformance,highenergy,abletoadapttodifferentareasofconstantpressurewatersupplysystemhasbecomeaninevitabletrend.Inthispaper,basedonwaterrequirements,thedesignofase
4、tbythePLC,frequencyconverter,FarEasTonepressure,multi-pumpunitconsistingofmajorequipmentsuchasautomaticfrequencyconversionconstantpressurewatersupply,withautomaticconstantfrequencyoperation,automaticfrequencyrunandon-sitefeaturessuchasmanualcontrol.Systemtoeffectivelysolvethetraditionalwayof
5、watersupplyproblems,andhaveavarietyofauxiliaryfunctions,andenhancethereliabilityofthesystem.Paperanalyzesthevariouswayswaterpumpthestatewatersupplyandconversionconditions,analysisofthemotortochangejobsbythefrequencyoftheswitchingfrequencyoperationandproblemsoftheprocess.Giventhestateofthecyc
6、letoachieveaneffectivechangeofcontroloftheelectricaldesignandPLCcontrolprogramdesign.Alsomadeanumberofpaperstoenhancesystemreliabilitymeasures.KEYWORDS:programmablelogiccontroller,VVVFspeedcontrol,constantpressurewatersupply,PLC洛陽(yáng)理工學(xué)院畢業(yè)設(shè)計(jì)（論文）III目錄前言...........................................
7、..............................................................1第1章恒壓供水原理及工藝..................................................................21.1任務(wù)..................................................................................................21.
