电路第08章-正弦稳态电路的分析课件.ppt

1、.UIUZIUI()UZIuiUUZII）jzZRXZuicos()ZRZsin()ZXZZR|ZXRRRUZRI.RIRUiRURIuRIRU.LILUiLULIujjLLLLUZLXILXL.CICUiCUCIu1jjCCCCUZXCI 1CXC UZ Ieq1nkkZZeqkkZUUZ.UIIYU(S)IYUiuIIYUU）jYYGBYiuZ cos(s)YGYsin(s)YBYY|YGBIYUeq1nkkYYeqkkYIIY.UI1,UIZYYZIU222221122eq222m21m222111(j)jjj11jj(j)C UUUCCCRRUZIg UC UUC gCRR2UR221

2、j C11j C2mg U.ZeqUIs()40 2cos3000 Vu tt.us(t)i(t).1.5k1k1F61H3i(t)us(t)i(t).1.5k1k1F61H3i(t)611jj3000j1k,jj2k133000106LCZLZ .I.1.5k1kj1kLICIsU-j2keq(12j)j12j1(2j1)(1j1)1.51.51.5(1j2)j11j122j1.5k2.5 36.9 kZ seq40 01636.9 mA2.5 36.9UIZj1j11 901636.9(1j2)j11j12458 2 98.1 mACIII1j225.355.3 mA(1j2)j1LCII

3、II()16 2cos(300036.9)mAi tt()16cos(300098.1)mACitt()25.3 2cos(300055.3)mALi ttU53.1IU.IRILIeq100 53.120 53.112j165 0UZIeqeq12,16RX2222221210032516LLLLLR XRXRRXXRX5 0 AI 100 53.1 VU 553.1 A3j4AI 100 010033RURI100 0j25j4LLUZI100 0 VU RILI25LX2,CIUU.CIRILIRUCU22jA,2jj100100RLCRLLURRIIIIX 2222(2)()10010

4、0RR100 2 0 V,j 2A,245 ALCRLRUIIII 2 0 ARI2 0 VRUReqjjjLCLCRXUZXRXIeqIm050050CCZXX jj50 245100 250 2j50 210045 VCRCUX IU j50j50CCUXIUCI100VURILICICUgCUgUgRLUUgg222A,100 2VLCRRLLLIIIUUX I145LRItgIcos100VRUUU.3I2I1I1I1Ig1RUg1I1RU190I1LU1CU190I1CU1LU2111LRLCUUUU2I290LU312III3I3RU2LUg2Ig1RUg1CU1LU1Ig3Ig3

5、RUg3CU390I2333LRLCUUUUU390I3LU1Ig1RUg1CU2LUg1LU2Ig3Ig3RUg3LUg3CUgU.()()()p tu ti t()2cos,()2 cos()u tUt i tIt0ui Zui()2cos2 cos()p tUtItcoscos(2)UItcoscos(2)UIUIt()coscos2cossin2sinp tUIUItUItcos(1cos2)sin2sinUItUIt ti,u,p cosUI001()dcosTPp ttUITcosui,0,0RLCPUI PP090900-0P sinQUIsinui0900,RLCQQUIQUI

6、 900-coscossinPUISQS22,QSPQtgPSUI222SPQPQS9090,cos0coscosPSIUIU374F1cos0.6cosU.ICI1I374F6j250 374 10380 0j44.6ACIj CU112000087.72Acos380 0.6PIU380 0 VU 187.7253.1 AI 158.525.8 ACIII58.5A,coscos25.80.9IU.ICI1I374FU1I11sinI11cosICIIsinI11ccososIICI1II1I1IcosU1I11sinI11cosICIICI111cosIIcosU1I11sinI11co

7、sICII111ccososIIsinI11111sinsinsinsin()coscosCPPPIIItgtgCUUUUcos1cos1cos12()PCtgtgU.UI,uiUUII iII()uiuiZSU IUIUIS cosjsinj(VA)ZZSSPQ22(j)SU IZ I IZIRX I 22RePRIZI 22ImQXIZI2()()SU IU U YYUUGjB U22,PGUQBU 22()kkkLkCkkQQX IXXI()()kp tp t2kkkPPR IkSS(j)jkkkkkSSpQpQ,1CLU.IRILI.CIj L1j C5 2 45 ARLCIIII 2

8、222ReRe4RRPZ IPZ IRIRI(2j2)5 2 454 5 020j20V20 2 45 VRUZ IR I 5 0 ARI 390 A,8 90 ALCII 20 2VU 20j3jRLRLRILIRILI10.4jjCCRLIIRICCRI,U.I1I2I222211,CLUPUXRXRIII U2IgI1Ig60301Acoscos(30)PPIUU121AIII2100CUXI 2186.6PRI221()50LUXRI3s()10 2cos10 Vu tt34mH500F.1a2b,IIII3j4.-j2sU1Ig12Ig2IgaIgbIgababsab1ab(3j4)

9、(j4)10 0(3j4)j410j4(j4j2)2(2j4)j20IIUIIIIIII a10j40j2j2020 901.24 29.74 A3j4j48j14 1616.12 60.262j4j2I b3j4102j4020j4044.72 116.572.77 56.31 A8j148j1416.12 60.26I1a1.24 29.74 AII31()1.24 2cos(1029.74)Ai tt2b2.77 56.31 AII32()2.77 2cos(1056.31)Ai tt.-j105.j5.-j0.5A.1 0 Ao-j5j10101nUg2nUg.12111111()()

10、1 05j10j10j5j10j5nnUU 12111111()()(j0.5)j10j510j5j5j10nnUU 1212(0.2j0.2)j0.11j0.1(0.1j0.1)j0.5nnnnUUUU0I.820 0 Voj6j16j16-j4-j40IgocU.820 0 Voj16j16-j4-j4ocU.Igocj16(j4)j1022IIUI 20 020 0236.9 A18j68(j16j4)2I ocj10 239.620 53.1 VU.Z1.Z2Z3Z4Z51423,(1,2,3,4)kkkZ ZZ ZZZk14142323()()ZZZZ14231423ZZZZ1133

11、,ZR ZR421144,ZR ZR23230 scI.820 0 Voj16j16-j4-j4scIgIg1Ig2Igsc12j16j45j16j4j16j43IIIIII 20 0240 901.5 53.1 Aj16(j4)160 36.982j16j4I sc2.5 53.1 AIoceqsc20 53.182.5 53.1UZI 0I&820 53.1 Voj60Igoc0eq20 53.12 16.2 AZj610 36.9UI ocUgjLLLLLZRXZLLoceqeqeqeq,j,jLLLLUIZRXZRXZZ22oc22eqeq(,)()()LLLLLLLUPR IRf R

12、XRRXX0,0LLLLPPRXeqeqeqeqeqjLLLRRZRXZXX 2ocLmaxeq4UPRcosjsinLLLLLLLZZZZeqeqeqeqeqeqeqcosjsinZZZZ2cos(|)LLLLPZIfZLoceqeqeqeq(coscos)j(sinsin)LLLLUIZZZZ2oc22eqeqeqeqcos(coscos)(sinsin)LLLLLLLZUPZZZZeq0LLLdPZZd Z时时oc10 0 VU2OCmaxeq110025W44 33UPR时时2max2221max105 100255W80484PP,要求要求 与与 2IU90.IU2I22221121

13、2RURUIZ RZRZ ZRZZ RZZR21122Z ZRZRZURI2Re0UI2kR1jCRUgRLUgCUgIg.Ug1(j)j()UZRLCI221(j)()ZRLCo(j)ZR1jCRUgRLUgCUgIg.Ugoooo1110,2LfCLCLCoo1LLCCoo11LLQRRCRRC1jCRUgRLUgCUgIg.Ugoomaxm,1j()UUUIIIIIRRRLComaxPPooRURIUoooojjjLLULIUQURoooo1jjjCUUIQUCCR ooLCUUQUo0XUoLUgoCUgoRUgoIUg1jCRUgRLUgCUgIg.Ug.oXU(j)H(j)()H(

14、j)H()1(j)j()ZRLC221(j)()ZRLC0,(j)Z 00min,(j)(j)ZRZ,(j)Z ,(j)Z,(j)Z0XLXCR(j),LCZXX，0LXL1CXC 11()LCtgR 0()2 o()0 ()2 0()2 2 o22()1()UIRLComaxIIo()I11()LCtgR 0()2 2 o0uo222oo2ooo22()11()1()11()IUILRLCRCIQo()II22oo()1,()11()IIQo()II1211Q1Q2Q2Q1o2222o2222()11()1()11(1)LLULUURLRQCQUQ2222()(1)CQUUQ0U QUUlm

15、ax=UCmax1 2 UL,UCo 12,oooo(j),|(j)|ZRZRoo(j),|(j)|YG YGo1LCo1LCoo1LQRCRooLQCRGo,UUIIRRo,IIUUGGoooo,j,j,0RLCXUU UQU UQU U oooooo,j,j,0RCLBII IQIIQII o.1j C.1j C.1j C.oeq2222eqeq11j1,j()()RLRLRYGRLRLRRLCL2222eqeq222eq1()(),()LRLRLLLLRLLLo111LCo2121()L CCR.Ug21jCZC2ZC1ZL11jC11221eq211CLCCCLCLCCLCLZ ZZ

16、ZZZZ ZZZZZZZ12210CCCLCLZ ZZZZ Z12eq1221CCLCCCLCLZ ZZZZ ZZZZ Z12CCC.o111LCo212121C CLCC,求求cos1.5I200 0 VU 4I.2I1I3IUg5Ig3Ig1Ig2Ig4Ig12410 120 A,10 0 A,1060 AIII112012010j17.3UZI 232320,20 6010j17.3UUZZII,求求U.1Ug2RI2Ug1j CCI2Ug1UgUgR1IgR2IgCIg2221212cos95.382UUUU U18084.62112113A,cos0.28ARRRUIIIR2122s

17、in2.99A,640CRRUIIRI2160.26,52.8F2CUCfCI20U 1U2R1j 2C1j C1j C1Ug2Ug.oc0Usc0I.0I ocU2oc0UU.ocsceq0UIZgg2U2R1j 2C1j C1j C1Ug2Ug.sc0Ig0I g1I2I1U.1j 2C1I1U.2I1j C1j C2R1111j 2112(1j)j 2j 21j 2UUCIRRCRRCCRRC2112()2112(1j)12j2j1j2jRURCUIRRRRCCCRCC20U 120II112fRCRCI1rad/s2V1UKU110 0 VU go.2UgIg11j1-j1V11j22

18、24512Keq1111jj12222Z 1eq10 010 0 A1UIZeq1,RLZRCI1rad/s4U110 0 VU go.Ig1j1.1j11F.1j11F1.4Ug1F110 0 VU go.Ig1j1.1j11F.1j11F1.4Ug1F3Ug110 0 VU go.I1j1.1j11F.11F2Ug110 0 VU go.Ig1j1.11F110 0 VU go.I11Ug.I1j1.1j11F.1j11F1.4Ug1F1.1.2Ug1.3Ug10 0 AI 234321UKUK UK U2 213510 082.5 2135 VLIs()220 2cos314 Vu tt

19、sU.1j CLIj L sI.1j CLIj L.sIss2220110,0.07H,145F10 314UILCLL(11.7j30.9)(j10)3369(j10)330159 VLU ()330 2cos(314159)VLu tts()2cos()u ttt()1 3e2cos()()A4tLi ttt()VtiL0()()()()LLLLi tititit()Lit()Lit()t0()Lita()()()LLLiti titba()()()LLLititit()()(1 e)tLLitipp()()0(0)etLLLititiph()()()LLLi tititp()12cos(

20、)A4Litt pp()1A,()2cos()A,(0)1A4LLLiitti()(1 e)()AtLitt()2cos()e()A4tLitttb()e()AtLitt a()(1 2e)()AtLitt100FC 650.5H1H0.4H3015100F.61100/1 100 10rad s1U20I 65j50j403015100F.sU24ICI1I120Ij100-j100111000VCUIC11000 0 VU11000 02053.1 A3040Ijs1(13060)143.1824.782053.12863.5677.88 VUjIs()2863.56 2cos(10077.88)Vu tt