电力拖动自动控制系统习题答案.doc

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1、1.txt32 11 PWMPWM1 2 3 1100004 5 6 12 PWMVTdi2VT1gUdUdEU>di2VDont2gU3+2VTTtont2VTdi.41VD1VD1VT2VT1VT1VT1VTdi2VD2VD2VT maxminnDn= maxnminns0Nnsn=0100%Nnsn= Nn0minNNNnnsnnn=+min(1)NNNnsnnss.=.=maxmin(1)NNnnSDnn=.sNn max1500/minOnr=min150/minOnr=15/minNnr= Nn maxmin15001115015nDn=. 1115100%100%10%15

2、001115NNNDnsnDn=+ 1500150r/min100r/min2%s 0minNNNnnsnnn=+min1500.023.06/min110.02Nnsnrs=.1opclnnK=+1001131.73.06opclnKn=.=.=16 158r/min30 1 clenC=dRI1+K clenC=dRI1+K=81+15=1281284.13/min130clenrC=+dRI1+K2 (1)NNnSDnS=.sDNnNn1.9417 D=201500/minNnr=10%5%240/minNopnr= s=10%8.33/min20NNnsnrD=15000.11-s1-

3、0.12401127.88.33opclnKn=.=.=s=5% 3.95/min20NNnsnrD=15000.051-s1-0.052401159.83.95opclnKn=.=.=10%5%18 12319 110 VM2.2220NNPkWUV12.5NIA= 1500/minNnr=1.2aR=1.5recR=D=2035sK=10%s1 opncln2315nUV.=dNII=Nn=n4122012.51.20.1367min/150012.5246.9/minNNaeNNeUIRCVnIRrC.=.=op1.2+1.5n0.13678.33/min20NnsrD=cl15000.

4、1n1-s1-0.12 3 15nU.=dNII=Nn=n150.011500nnNUUnn.=4246.91128.648.33opclnKn=.=.=28.6411.19/0.0135/0.1367PSeKKKC=111 1-102dblNII1.2dcrNII1/3: UBnKp Ks1/CeU*nUc Un E n Ud0Un+- IdR-UnKs: IBd+-A GT MTG+-+-+-UtgUdIdn+-+ UnUnU*nUcUPE+-MTIdUnUdUcUntg21.2ncomdblNScomdcrNSUUIIRUIIR.+=15V.nU1.522.5sRV=comU21.2nc

5、omdblNScomdcrNSUUIIRUIIKR.+=112 1-5818NPkW=220NUV=941000/minNIAr=Nn0.15aR=0.3recR=40sK=15nmU.=10imUV=D=2010%s1.5dblNII=1.1dcrNII=1 2 pK3 1R020Rk=4 2RVS1150.0151000nnNUUnn.=2220940.150.2059min/100094205.4/minNNaeNNeUIRCVnIRrC.=.=op0.15+0.3n0.20595.56/min20NnsrD=cl10000.1n1-s1-0.1205.41135.95.56opclnK

6、n=.=.=35.912.3/0.01540/0.2059PSeKKKC=113 1 pK2 3 aR4 5 pKaR1-13 VM2.822015.6NNNPkWUVI=1500/minr=Nn1.5aR=1recR= 35sK=1 D=30s2 D=30s=10%3 D=3010%s= 10nUV.=dNII=Nn=n pK4 KD=3010nUV.=dNII=Nn=n122015.61.50.1311min/1500NNaeNUIRCVn.=.15.6297.5/minNeIRrC=op1.5+1n0.131130297.5100%100%85.6%150030297.5NNNDnsnD

7、n=+2D=30s=10%15000.15.56/min30NNnsnrD=1-s1-0.1310nU.=dNII=Nn=n100.0071500nnNUUnn.=297.51152.515.56opclnKn=.=.=52.5130.6/0.00735/0.1311PSeKKKC=4 297.5/minclopnnr=30297.5100%100%85.6%150030297.5NNNDnsnDn=+1-15 1-10L=50mH1-10K21.6GDNm=.0.050.01851.21.5lLTsR=+21.6(1.21.5)0.065303753750.13670.1367memGDRT

8、sCC+= 0.00167sTs=22()0.065(0.01850.00167)0.0016742.50.01850.00167mlsslsTTTTKTT+<= 23.1>28.75,K23.1.1-16 0U=nUcU,0nnnUUU.=cUnUcU0nU=cUnU0nU=nU cU1-17 1-18 1/1+K 2-1 nKsK n nU.nKsK 2-2 ASRimU.ACR cmUdmU2-3 PIPPPI2-4 123451 n ASRU*i IdL UcnId IdLnU.nU. Kp Ks Rs Ucom Un* 234ASRASR0n*nnnUU=52-5 PIi

9、U2-6 nU. nU2-7 ASRACRPI3.7,220,20,1000/minNNNNPkWUVIAnr=1.5R=8nmimomUUU.=40dmIA= 40sK=120dUiU. iUcU180.2/40imdmimdmUIUVAI.=max80.008min/1000nmUVrn.=.2n=00401.560dedUCnIR=+=8iidUUI.=.=8iUV=0601.540dcsUUVK=2-8 ASRACRPIASR80A40A70A 8imU.=1 iU.2 cU3 cU2-9 iU.cU0dUdIn2-10 IT=0.1s10%12stt30.25t<K=?=2-1

10、1 110()10.011objKWsss=+5%2-12 110()(1)(0.021)objKWssTsss=+II30%2-13 18()(0.251)(0.0051)objWsss=+III2-14 60,220,308,1000/minNNNNPkWUVIAnr=0.196min/eCV=.0.18R=35sK=0.012lT=0.12mT= ASRACR0.0025oiTs=0.015onT=()10nNU.=8,6.5imomUVU.=D=105%i10%n1339A2ACRiRiCoiC040Rk=3ASRnRnConC040Rk=440%n51.80.0236/339imdm

11、UVAI.=max100.01min/1000nmUVrn.=.2.1 Ts.1-2,Ts=0.0033s. Toi.3.3ms,(1C2)Toi=3.33ms,Toi=2.5ms=0.0025s. .,iT0.0058SoiiTTT=+=2i5G,I.,PI,(2-57).:0.0122.070.0058liTsTs=,2-3I,.3: l=T=0.012si.:i5G,2-2, 10.5iKT=1I0.50.5K80.0058isTs.=,ACR:860.0120.180.225350.0236IiisKRKK=4: 186ciIKs.= 111101330.0033cissTs.=. 1

12、113379.060.120.012cimlsTTss.=<. 11111116.1330.00330.0025cisoisTTss.=>.52-25,0R=40k,00.225409iiRKRkk=636300.0121.33101.33,1.33910440.00250.25100.25,0.24010iiioioiCFFFRTCFFFR.=,i=4.3G<5G(2-2),.3. 1 1/.IK0.5IiKT=,I1220.00580.0116KiTs= .,=0.01s. onTonT .,nT1=0.0116s+0.015s=0.0266sonnITTK=+2,PI,ASRWnnnKs+1s=s3,h=3, ASR=h=30.0266s=0.0798snnT(2-75): 22222214314.12230.0266NnhKshT.+=,(2-76)ASP:(1)40.02360.1960.127.732230.010.180.0266emnnhCTKhRT+=4(2-33): 111314.10.079825.1NcnNnKKs.=:111