測試技術(shù)課后答案全集第三版

1、測試技術(shù)課后答案全集第三版緒論 1 / 291測試技術(shù)課后答案全集第三版 27.8 7.6610 0.000766%61.01825441060.00003 1.1976510 0.000120%625.048940.026 0.00473 0.473%5.482 2 s v u2siiiju2u2 ujjj 即 a%nmA A a%mm123U U U 3001.0% V123U3100% (100% ()100% 1.0%)100% 1.5%123U1U2U1UU20022 / 292測試技術(shù)課后答案全集第三版U3100% (3)100% 3.0%U3U3 xU 0.5% 0.75V1U1

2、100% ()100% 3.0%U1U1U 301.5% 0.45V2U2100% () 1.8%U2U2 sX x xxnnx802.40802.43ix i1802.44n8n ( )x x2is i1 0.04 0.01n1s0.048 xnX x 802.440.01x X x x x12 10 0.2 1.414mm X12 103 / 293測試技術(shù)課后答案全集第三版V DH24E (2E )(E )224VDH(20.5%) (0.5%)224 0.88%第一章思考題與習(xí)題 和 cnn TA(0T )02xt)T A ( T 0)02t j t 1 j tej0T01T( )jn

3、c n0202x t e dtt0T01jn2jn2tT0t 02Aedt Aedt00T000202jn2tAA ee j n0j nj n02A jn n00,2,4,2An c nnc c2n4 / 294測試技術(shù)課后答案全集第三版(t) x sin tx x 。0 x1 22T11TTxt)dt xsintdtTT0 x00T2x2x1xTsin tdt cost 20002TT0011Tx rmsxt)dt Tx sin tdt2202TT00 1cos2 tx20TxTTdt cos2t)dt2T00 x20T1T2t sin2 t x0T200(t) Ae (a 0,t 0) x

4、X(f)xt)ej2ftdt Ae ej2ftdtat0 Ae(aj2f)tdt Ae(2 ) a j f ta j2 f00 )A(a j2 fa j2 f (a j f a j f )( )AafA ja22f2a22f2 1t 0ut) 0t 0 t在e0 的頻譜在0e 時(shí)域上當(dāng)t5 / 295測試技術(shù)課后答案全集第三版X (f) xt)e 2 dte e 2 dt t j ftj fte01 e(j2f)t j f01f j j f ff222222 X (f) jX (f)eReI(f)URU (f) X (f) 0f 0f 0 f 2R2200U (f) X (f) 0f 2R22

5、0而lim X (f)df limdf feR2220 0 1fd(flim) limarctanf0 1()20(f)U RU (f) (f)R(f)UI2 f 01U (f) X (f) ff 2I220U(f) U (f) jU (f)RI1( )f jf1t 0t 0t) 1e tt 0 x t) t 0e et在011f 2 f 2X(f) j j f j f2(t) 0在 xe 0 j4 f1ff) j f 20226 / 296測試技術(shù)課后答案全集第三版cos t 0cos t t T0 xt)0t T 1t Tt)t)( ) cosx t ty 0tT0yt) t)xt)t)x

6、 1X(f) f f f f() ()200t)w 1W(f)(ej2fT e 2 )jfTjfsinfTTTsinc(2fT)fTt)y Y(f)W(f)X(f)1Tsinc(2 fT ) (f f f f) ()200TT sin2 f f T () csin 2(f f T2200 (t)e sin t x 0eat t 0(t) e sin tx t) (a0)x00t0e(t) sin txsx0(t) sin ts07 / 297測試技術(shù)課后答案全集第三版1X (f) j f f f f() ()2s00eat t 0t) (a0)x0t 0e1afX (f) ja j2 f aa

7、 fe22f2222t)x 的X(f) X (f)X (f)esaf1 j j (f f )(f f )2a2 f22a2 f2200()f fa j j0a (f f ) a (f f )22222200()f fa0a (f f ) a (f f )0 2222220t)cos t ) f 00mt)cos tf (t)cos tf 00 0m cos t 01X(f) f f f f() ()200(t)cos tf01X) F)X) F) ) 2c001 F( ) F 200 若0m(t) x sin(t)( ) 2 p x 。 x0 xx8 / 298測試技術(shù)課后答案全集第三版102

8、2T11TT limxt)dt x )t dtTT00 xT00 xTxx sin( t d t ) )cos(t )T000T00TT000011TTlimx t)dt sin )xt dt22202TT0 xT00 x 1cos2( t)x 2020dt Tcos2( t dt )T0T2T000 x201x20t sin t TTT20000 cos( )t dtdx x0002 )T 2 t xt x000 xt)2sin ( t ) 1 cos )t22x2000 xx t)2t )0 x202dx2dxT 2 t x )x0t ( )x2 tx0000 x20TxT2dxdxlim

9、 limx20 ( ) x2tx x t20 ( )2TTTx00 x20TxTxt( )1x2x2p(x) T0 xx x t ( ) 0 x 0 x202第二章思考題與習(xí)題 9 / 299測試技術(shù)課后答案全集第三版S S S S12390nC MP 0.005V nC20mm Va9mm MPax SP 9mm MP 3.5MP 31.5mmaa 1f T1(f)1 f 22 2f 0(0)11(0) ( ) 1A A A f 1sf1 22 211110.586 4 0.35222211T2120.3270.085A2sA5s1 xt)0.5cos10t0.2t45)H(s)0.005s

10、11) 1 22)arctan()1xt)0.5tarctan101 0.0052210.2t451 0.005220.499t2.8)0.179t71.6) 1H(s) 1 s10 / 2910測試技術(shù)課后答案全集第三版0.1530 xt) 5t t0.025X(s) tut)s21 0.0251(11Y(s) H(s)X(s) ) 1s1s2s2ssty(t) 0.025t e )t xt) yt)e)t lime) 0.375C75m15tt30m0.375Ch0.15Ch3000mh3000m75m3075m 1(f)0.951 f 22 211() 1() 122 f43.14 42

11、2221 1 ( ) 1A A f 1 f 22 2111.3%14 222( )f f)arctan(2 0.000523117) 0.8 0.70700.58( ) A n11 / 2911測試技術(shù)課后答案全集第三版1cos tH(s) 1syt)1H(s)X(s) 1sxt) t ss2 21sY(s) H(s)X(s) 1s s221tyt)tarctan)ecos(arctan)1)2 xt)10sin(62.8t) j0.01 2)k2H) HH) )n1 j 122 j2nn212562H) HH) ) j0.01 j20.07 )1222k 20.011256n0.07k2A

12、) 11.693711)21(0.012 )arctan(0.01 32.111A ( )2( ) ( )22nn162.862.8() 40.07 ()22125612561.0024812 / 2912測試技術(shù)課后答案全集第三版62.8( )20.07() )0.4n62.821( )1()22nxt)10sin(62.8t)tyt)10A)A )sin62.8 ) )1212101.693711.00248sin(62.8t32.10.4)16.9791sin(62.8t1.5412 和(不考n3.5s0.5 s2s2nn2kkH(s) H (s)H(s) 12n1ss 12s22nn3

13、412n7s1s2 s22nnk k k 312 0.14)A 0.7) ) 和 0.141(f)ff( ) 4 ( )2 222ffnn11.31400800() 40.14 ()22 2240020.14()800)2) arctan10.574001(8000.71(f)ff( ) 4 ( )2 222ffnn10.97400800400() 40.7 ()2213 / 2913測試技術(shù)課后答案全集第三版40020.7(800)arctan43.024001()2800 1.5M 0.53110.215() 1() 122lnMln0.5 1 2 （由dndb6.23 1 0.2151.

14、03 1 n 22b31.0322H(s) ns22 s2s220.215 1.03 1.03s2nn231.032H)n 2 0.215 1.03 1.03 j j2222nn14 / 2914測試技術(shù)課后答案全集第三版第三章思考題與習(xí)題 dR E ER 圖3-84 題3-4圖 2 RS R 6gV 1.5I R 12012.5mAV1.5I 12.475mARR 1200.2412.5 A N02S 0215 / 2915測試技術(shù)課后答案全集第三版 A N 00N A 0 121C r2021 8.8510 13.14(410 ) (110 )12326(0.310 )234942.77

15、10pF6 4942.7710 1005 2.5格x C S S612 圖3-85 題3-8圖x 。uRLox16 / 2916測試技術(shù)課后答案全集第三版xR Rxxpp與R xRLxR RpxLRI pxR RxLppueRR RpxxR RpxuLu IRopexxR RpR RxxLxLpR RppxxppR RpxLppuueexxxRxR R R Rpp )x RxxLpLpx1LpppxRRLxLpRPR在u xoLuu xexop S S S S 900.005209MPa mm123 17 / 2917測試技術(shù)課后答案全集第三版 18 / 2918測試技術(shù)課后答案全集第三版第四

16、章思考題與習(xí)題 R 2 2 S 466Rg01RU U 46 33VV64R40e0R 2 S 463Rg0R1U U 43 3334R40e0 R 2R2R R R R R RR，和12012340R RRU (UU1140R R R RR Ree11223402R 2RR(002R 2R2R 2R R R000R R R(U002R2Re00RU2Re019 / 2919測試技術(shù)課后答案全集第三版1 U2U0R RS e0RR R R R R R RR，和0221212340R RRU (U1140R R R RR Re112234RR022R(RU0RR RR Re00002222R R

17、 R(U002R2Re00RU2Re01U0R RS U2e0 t) Acos10tBcos100t如果電橋激勵(lì)電壓uEsin10000t0R( )t( cos10t Bcos100 ) S t S ARgg0RU u S (Acos10t Bcos100t)Esin10000t0R0g0 S AEcos10tsin10000t S BEcos100tsin10000tgg1 S AE t t)t t)2g1S BE t t)t t)2g S AE(sin9990t sin10010t)S BE(sin9900t sin10100t)gg x (t)30cost20cos3t)(cos t)a

18、c10kHz f ，fc20 / 2920測試技術(shù)課后答案全集第三版 xt)ax(t)ax t) 30cost 20cos3 )(cos )t tac100cos2 f t 30cos2f tcos2f t 20cos6 cos2f tf tccc1100cos2 f t 30 ) f t f t )f t f t2ccc120 cos(6 f t f t ) )f t f t2cct t 100cos210000 15cos2 9500 15cos2 10500tt 10cos28500 10cos2 11500txt) t 3t30cos2 f t 6f t2 2 t tx t) 2 15

19、cos2 15cos2 t t tat 2 2 t xt)yt) X(f)*Y(f)11cos2f t (f f ) (f f )2200011xt)cos2 f t X f( )*(f f X f)( )*(f f )22000t)xt) x f021 / 2921測試技術(shù)課后答案全集第三版 f f 0max f f m0 B f fc21 f f f 1c20f 2f。c21 f ff。01 c21 3 23f 和f cf 2 fcn若 nf 2fc21 2ffc21f 2f0i0(i131f 2 f30i0(i22 / 2922測試技術(shù)課后答案全集第三版1 32f2 2 40(i3312

20、 f30(i1 3 23 (s) H( ) ( ) )。H； ； ；10sin1000tui u0 1 61H(s) s11H) j11) 1(0.001)2) )111) 0.7071)21 (0.001 1000)22) )arctan(0.0011000) 45 u 100.707t 45)o12 1H)1 jxt)0.5t)0.2t45)yt)yt) xt) 與 的1yt) 0.5t arctan(0.0510)1(0.0510)210.2t 45arctan(0.05100)1(0.05100)2 0.447t 26.6)0.039t 4578.7)23 / 2923測試技術(shù)課后答案

21、全集第三版 1( ) t y t) xt)1RC 111sH (s) 1s111dyt)R C2 yt) y t)2dt11H (s) s1221sH(s) H (s)H (s) 11 s112s12f1H(f) 1f 1 f 112f1(f) 11(2f )1(2f )22121( ) f f) )f2124 / 2924測試技術(shù)課后答案全集第三版111或(f) f21211f 1f c22 R C2 R C112211 f (f)11211f ( ) 0f，A f12 R uiinAB dI dr dtnAB ur(R R ) dtr(R R )2ii1i1I rn2A m 為75，磁通密

22、度B R 2R1 inAB ddnABIr uR R dtR Rdt2ii1i1dd S u222nnninABrIcR Rr(R R )k，c， ，Su，k1。iRRr r(R R )nrIrIui1i1i1S2H(s) ns22 2snnnABr(R R )10010 1504S 7.5rad V10 3i1nABR R10010 150412575 47.43i1rI10 2.51035R25 / 2925測試技術(shù)課后答案全集第三版nABR R Ri1rI當(dāng)0.7R為nAB100104150R (R R ) 13352.60.11rad V0.7 10 2.510i1rI35nAB10010 1504S r(RR R)10 7513352.6)3i1第五章思考題與習(xí)題t) 求h eatt a t ht)026 / 2926測試技術(shù)課后答案全集第三版R ( h t h t dt)( ) ( )he ea(t)dtat01ea2at) x xt) A t ) A )t11122