電路課件一八

第14章網(wǎng)絡(luò)函數(shù)一.定義單個(gè)獨(dú)立源作用的線性網(wǎng)絡(luò)零狀態(tài)e(t)r(t)E(s)R(s)§14.1網(wǎng)絡(luò)函數(shù)的定義RC+_+_uS例：uCR1/sC+_+_Us(s)UC(s)網(wǎng)寒絡(luò)它函必?cái)?shù)朱是長由倦網(wǎng)手絡(luò)笑的券結(jié)債構(gòu)賄和獨(dú)參陶數(shù)制決想定吩，滿與興激么勵(lì)仙無孟關(guān)網(wǎng)訊絡(luò)鳴函在數(shù)仿是底實(shí)鄙系初數(shù)填的傲有答理痕函拆數(shù)1厲.篩策倦動(dòng)加點(diǎn)委函始數(shù)策辟動(dòng)鑼點(diǎn)濃阻謀抗策裁動(dòng)圣點(diǎn)沾導(dǎo)賄納2似.裹轉(zhuǎn)叨移典函追數(shù)蔥(蕩傳庫遞夠函掙數(shù)糟)轉(zhuǎn)棋移捉導(dǎo)上納轉(zhuǎn)護(hù)移疑阻注抗轉(zhuǎn)旅移怎電卡壓煌比轉(zhuǎn)拿移暴電仿流薦比U2(s)I2(s)U1(s)I1(s)U(s)I(s)二紙.慌網(wǎng)珠絡(luò)章函我數(shù)餐的稻具壺體楊形稼式三呼.趙單濃位趁沖薦激驗(yàn)響牽應(yīng)析、線單偵位澡階羽躍齡響眾應(yīng)皇與臥網(wǎng)渾絡(luò)盲函餓數(shù)種的臟關(guān)肆系零狀態(tài)

(t)h(t)e(t)r(t)若h(t)已架知隨，澇則碑任羅意雄激燃勵(lì)e(t)產(chǎn)閘生易的則響孔應(yīng)r(t)：零狀態(tài)

(t)g(t)1/sG(s)初滾值釘定剛理終桐值認(rèn)定友理單剛位蜘階療躍亡響減應(yīng)險(xiǎn)初視值單侍位囑階跌躍糟響褲應(yīng)逃終個(gè)值§僚1難4牲.挖2網(wǎng)豪絡(luò)絞函損數(shù)矮的啄極擴(kuò)點(diǎn)知和劍零掏點(diǎn)（懷一片）標(biāo)復(fù)苗頻偵率怨平寺面

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極吼點(diǎn)具用侮“”夠表慌示鋸，撒零葉點(diǎn)大用座“?！弊直碇妒咎?。

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-3例隙：繪舍出軋其禮極澆零球點(diǎn)踢圖

-1j-j0（巾二系）曠極兼點(diǎn)瘦分觀布孤與竭沖境激妥響奧應(yīng)極胸點(diǎn)弟位賓置憑不踐同獻(xiàn)，矮響淹應(yīng)禍性灣質(zhì)另不育同憐。

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極崗點(diǎn)每的機(jī)位親置您決婚定良沖邊激遍響盯應(yīng)適的答波腦形極柴點(diǎn)換和影零厚點(diǎn)犧共揚(yáng)同綠決膊定郊沖鞠激鞋響垮應(yīng)績的屢的批幅捏值網(wǎng)喂絡(luò)框函藝數(shù)祝極酬點(diǎn)冶的界位喬置帖決嶺定祝了拍系痰統(tǒng)婦的抽穩(wěn)柏定裹性全晚部探極嬌點(diǎn)優(yōu)在碧左鉗半碎平敵面新系抗統(tǒng)供是齡穩(wěn)棋定秀的刪，削只雖要脂有架一谷個(gè)杯極貸點(diǎn)騾在右擾半剪平茄面允系始統(tǒng)繳不食穩(wěn)伏定閘，斑極累點(diǎn)揮在紐奉虛衰軸戒上撞是嗚臨舅界時(shí)穩(wěn)困定榨。網(wǎng)需絡(luò)梯函申數(shù)君極掠點(diǎn)次是渴該簽網(wǎng)蛾絡(luò)喝變毅量嶄的器固寺有藏頻到率丑（芹自矮然蛋頻申率損）P西3班1荷9R(s)班=H(s)E(s)設(shè)H(s)和E(s)沒紋有相體同叉的倍極撫點(diǎn)由網(wǎng)絡(luò)函數(shù)極點(diǎn)形成的

自由分量由激勵(lì)函數(shù)極點(diǎn)形成的

強(qiáng)制分量系栽數(shù)Ai和Aj由腦零頑點(diǎn)杏和戶極澡點(diǎn)阻共井同宮決息定1工.努由稠網(wǎng)蛾絡(luò)而函柿數(shù)?？梢狼髤s正處弦斧穩(wěn)渠態(tài)煉響伙應(yīng)響愛應(yīng)尚相永量激遲勵(lì)圈相需量(泥三早)盜極蛾點(diǎn)旺零酷點(diǎn)槽與敬頻器率筑響?yīng)殤?yīng)只圓需澆令s=平j(luò)

2蜓.挑極暑點(diǎn)橋、譽(yù)零堪點(diǎn)臥與炊頻鞋率序響燭應(yīng)參忠見行書蜻1誘4看.年4軍節(jié)務(wù)，p抓3榆2鐵0頻析率泉響悶應(yīng)主特背性健分螺為溪：幅辱頻工特植性和相箭頻聽特艘性§泥1女4偉.路3卷嶺積境定喪理h(t)r(t)e(t)