伴隨網(wǎng)絡(luò)法在線性動(dòng)態(tài)電路分析中的應(yīng)用.doc

本科畢業(yè)論文論文題目：伴隨網(wǎng)絡(luò)法在線性動(dòng)態(tài)電路分析中的應(yīng)用學(xué)生姓名：所在院系：機(jī)電學(xué)院所學(xué)專(zhuān)業(yè)：應(yīng)用電子技術(shù)教育導(dǎo)師姓名：完成時(shí)間：摘要在對(duì)線性動(dòng)態(tài)電路進(jìn)行分析時(shí)，我們通常采用經(jīng)典法或者拉普拉斯變換法。前者主要適用于分析簡(jiǎn)單的一階電路,而后者則更適合于分析復(fù)雜的高階動(dòng)態(tài)電路，但運(yùn)算量較大。隨著計(jì)算機(jī)技術(shù)的發(fā)展，MATLAB應(yīng)運(yùn)而生，在電路分析中發(fā)揮著日益重要的作用。本文以伴隨網(wǎng)絡(luò)法為基礎(chǔ),以MATLAB軟件為平臺(tái),探索出一種對(duì)線性電路進(jìn)行瞬態(tài)析的新方法。該方法從建立電路方程伊始,就設(shè)法避開(kāi)微分方程,利用伴隨網(wǎng)絡(luò)法將動(dòng)態(tài)電路的過(guò)渡過(guò)程劃分為若干時(shí)間間隔t,將動(dòng)態(tài)元件L,C用相應(yīng)的離散模型來(lái)取代,經(jīng)過(guò)代換的電路稱(chēng)為原電路的伴隨網(wǎng)絡(luò)。對(duì)于每一個(gè)時(shí)間間隔t而言,在伴隨網(wǎng)絡(luò)中不含動(dòng)態(tài)元件,因而可將瞬態(tài)電路的分析歸結(jié)為一系列不同離散時(shí)刻下電阻網(wǎng)絡(luò)的穩(wěn)態(tài)分析。該分析方法簡(jiǎn)單方便,結(jié)果清晰直觀。關(guān)鍵詞：伴隨網(wǎng)絡(luò)，離散模型，改進(jìn)結(jié)點(diǎn)法AbstractIntheanalysisoflineardynamiccircuits,weusedtheclassicalmethodortheLaplacetransformmethod.Theformerismainlyappliedtoanalysisofasimplefirst-ordercircuit,thelatterismoresuitableforanalysisofcomplexhigh-dynamiccircuit,butlargeroperations.Withthedevelopmentofcomputertechnology,MATLABcameintobeinginthecircuitanalysis,anditisplayinganincreasinglyimportantrole.Thispaper,takingaccompanyingnetworkasthebasisandtheMATLABsoftwareasplatform,probesoutonekindofnewapproachcarryingoutthetransientanalysisonlinearitycircuit.Thenewmethodissimpleandconvenient.Complyingwiththebuilding-upcircuitequationbeginning,ittriestoavoiddifferentialequationrightaway,andmakesuseofaccompanyingnetworkfollowingttransientprocessdividedforsomeperiods,andcomestosubstitutedynamiccomponentL、Cwithcorrespondingdiscretemodel,bythatthesubstitutingcircuitiscalledtheaccompanyingnetwork.Toeveryperiodt,thereisnodynamiccomponentintheaccompanyingnetwork,sothetransientanalysisofthislinearitycircuitcanbedividedintoaseriesofsteadystateanalysisofresistancenetwork.Keywords：accompanyingnetwork,discretemodel,目錄1.緒論.12.電路的計(jì)算機(jī)輔助分析.12.1計(jì)算機(jī)輔助分析軟件的發(fā)展.12.2MATLAB簡(jiǎn)介.23.線性電路瞬態(tài)分析的常用方法.33.1經(jīng)典法.33.2拉普拉斯變換法.33.3MATLAB符號(hào)運(yùn)算.34.改進(jìn)結(jié)點(diǎn)分析法.44.1添加法.44.2添加法建立改進(jìn)結(jié)點(diǎn)方程.44.2.1電阻支路.54.2.2獨(dú)立電流源支路.54.2.3獨(dú)立電壓源支路.64.2.4電流控制電流源支路.64.2.5電壓控制電流源支路.74.2.6電流控制電壓源支路.74.2.7電壓控制電壓源支路.85.伴隨網(wǎng)絡(luò)法.95.1動(dòng)態(tài)元件的離散模型.95.1.1電容C的伴隨網(wǎng)絡(luò)模型.95.1.2電感L的伴隨網(wǎng)絡(luò)模型.95.2伴隨網(wǎng)絡(luò)法分析瞬態(tài)電路的步驟.