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1、基于PLC交流變頻調(diào)速系統(tǒng)的設(shè)計(jì)2012年5月29基于PLC交流變頻調(diào)速系統(tǒng)的設(shè)計(jì)DesignofFrequencyFonversionFpeedRegulationSystemBasedonPLC29摘要近年來，隨著電力電子技術(shù)、計(jì)算機(jī)技術(shù)、自動控制技術(shù)的迅速發(fā)展，交流傳動與控制技術(shù)成為目前發(fā)展最為迅速的技術(shù)之一，電氣傳動技術(shù)面臨著一場歷史革命，即交流調(diào)速取代直流調(diào)速和計(jì)算機(jī)數(shù)字控制技術(shù)取代模擬控制技術(shù)已成為發(fā)展趨勢。電機(jī)交流變頻調(diào)速技術(shù)是當(dāng)今節(jié)電、改善工藝流程以提高產(chǎn)品質(zhì)量和改善環(huán)境、推動技術(shù)進(jìn)步的一種主要手段。變頻調(diào)速以其
2、優(yōu)異的調(diào)速和起制動性能，高效率、高功率因數(shù)和節(jié)電效果，廣泛的適用范圍及其它許多優(yōu)點(diǎn)而被國內(nèi)外公認(rèn)為最有發(fā)展前途的調(diào)速方式。而PLC控制技術(shù)的引入使得調(diào)速控制的快速性，穩(wěn)定性，準(zhǔn)確性方面有了不小的改進(jìn)。因此，應(yīng)用PLC控制交流變頻調(diào)速有著較為廣闊的發(fā)展前景。本文內(nèi)容介紹了步進(jìn)電機(jī)以及單片機(jī)原理、該系統(tǒng)的硬件電路、程序組成，同時對軟、硬件進(jìn)行了調(diào)試。該設(shè)計(jì)具有思路明確、可靠性高、穩(wěn)定性強(qiáng)等特點(diǎn)，通過調(diào)試實(shí)現(xiàn)了上述功能。關(guān)鍵詞:交流調(diào)速系統(tǒng)變頻技術(shù)異步電動機(jī)PLC控制技術(shù)29AbstractInrecentyears,withthed
3、evelopmentofpowerelectronictechnology,computertechnology,automaticcontroltechnologyisdevelopingrapidly,ACdriveandcontroltechnologyhasbecomethemostrapidlydevelopingtechnology,electricdrivetechnologyisfacingahistoricalrevolution,namelytheACspeedregulationtoreplaceDCspe
4、edcontrolandcomputerdigitalcontroltechnologytoreplacetheanalogcontroltechnologyhasbecomethetrendofdevelopment.MotorACvariablefrequencyspeedcontroltechnologyisnowtheelectricitysaving,improvetheprocesstoimproveproductqualityandimprovingtheenvironment,promotingtechnolog
5、icalprogressandamainmeans.Withitshighfrequencyconversionspeedandbrakingperformance,highefficiency,highpowerfactorandenergysavingeffect,wideapplicablerangeandmanyotheradvantagesbydomesticgrandpathinkthemostpromisingcontrolmode.WhilethePLCcontroltechnologymakesthespeed
6、controlspeed,stability,accuracy,thereisnotasmallimprovement.Therefore,theapplicationofPLCcontrolACdrivehasamorebroadprospectsfordevelopment.Thisarticleintroducedthesteppermotorandtheprincipleofsingle-chipcomputer,thehardwarecircuitofthesystem,theprogramcomponents,whi
7、lethesoft,hardwaredebugging.Thedesignhastheadvantagesofclearthinking,highreliability,strongstabilityandothercharacteristics,thefunctionsareachievedthroughdebugging.Keywords:ACvariablespeedcontrolsystemfrequencyconversiontechnologyasynchronousmotorPLCcontroltechnology
8、29目錄摘要1緒論11系統(tǒng)的工作原理21.1三相異步電機(jī)21.1.1三相異步電機(jī)的結(jié)構(gòu)21.1.2三相異步電機(jī)的工作原理31.2變頻器31.3控制系統(tǒng)41.3.1PLC的工作原理41.3.2PLC的應(yīng)用52系統(tǒng)控制方案選取72.1電機(jī)的選擇72.2變頻器的選擇7
