分布參數(shù)電路ppt課件-閱讀頁
2025-05-21 08:18本頁面
【正文】 )1 = I0 u = 2U0 + (u+ )2 = U0 i = 0 + ( i+ )2 = I0 2U0 v v x=l U0 u x=0 U0 x=l x=0 i I0 3l / v t 4 l / v (u )2 = (u + )2 = U0 N ( l ) = 1 (i )2 = (i + )2 = I0 u = U0 + (u )2 = 0 i = I0 (I0 ) = 0 v x=l U0 u x=0 U0 這種多次反射過程將周期性重復(fù)，周期 T= 4 l / v v x=l x=0 I0 i (2)始端和終端的電壓、電流隨 t 變化 始端電壓 u ( 0 , t )＝ U0 終端電流 i ( l , t )＝ 0 U0 t 0 x 0 2l/v 4l/v n(l)=1 n(0)=1 U0 U0 U0 U0 +U0 l l/v 3l/v t l 0 x t I0 I0 I0 I0 I0 n(l)=1 n(0)=1 l/v 3l/v 2l/v 4l/v 終端電壓 u(l,t) t 2U0 l/v 3l/v 5l/v u ( l , t ) 7l/v 0 始端電壓 u(0,t)＝ U0 T 始端電流 i(0,t) 終端電流 i(l,t)=0 t I0 I0 i ( 0 , t ) 2l/v 4l/v 6l/v 0 T 二 . 終端接電阻 )(CZR ?10 ?????? nZRZR ZRn CCC 設(shè) ?????????????CC ZnuZuinuux 0 2l/v 4l/v n(l)?1 n(0)=1 U0 nU0 nU0 n2U0 +n2U0 l l/v 3l/v t 終端電壓 u2 u2 t (1+n) U0 (1n2 ) U0 (1+n3 ) U0 U0 3l/v l/v 5l/v 穩(wěn)態(tài)時終端電壓 u2＝ U0 ?,2,1,0])1(1[ 012 ???? ? kUnu kkt l / v 032032033221)1])1(1(2[)2221()1(InnnnInnnInnnnnnikk????????????????????????始端電流 l x t 0 2l/v 4l/v n(l)?1 n(0)= 1 I0 nI0 nI0 n2I0 n2I0 n3I0 n3I0 l/v 3l/v 5l/v 6l/v 7l/v 8l/v I0 = U0 / |ZC | t U0 /R I0 (12n)I0 (12n+2n2)I0 2l/v 4l/v 6l/v 0 i1 RUZURZZUnnIniCCCt000012211)112(????????????終端電流 i2 l x t 0 2l/v 4l/v n(l)?1 n(0)= 1 I0 nI0 nI0 n2I0 n2I0 n3I0 n3I0 l/v 3l/v 5l/v 6l/v 7l/v 8l/v i2 t (1n) I0 (12n+n2 ) I0 (12n+2n2n3 ) I0 U0/ R 3l/v l/v 5l/v 0 I0 = U0 / |ZC | 032032033222)1])1(1(2[)2221()1(InnnnInnnInnnnnnikk????????????????????????RUZURZZUnnIniCCCt000022211)112(????????????t l /
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