-1电流环近似降阶条件:==40.64s>ωcn3TΣi30.00581KI186.2-1小时间常数近似条件:==25.27s>ωcn3Ton30.015满足近似等效条件转速超调量检验:当h=3时,查表得∆=CCmax/b%72.2%274.50.0266σ%=××××=72.2%21.089.49%<10%n10000.12转速超调量的检验结果表明,上述设计符合要求。⑥计算调节器电阻和电容取R0=40kΩ,则RKRnn==×=08.0240320.8kΩ,取Rn=320kΩ3τn0.0798×===0.25µF,取Cn=0.2µFRn32034Ton4××0.01510Con===1.5µF,取Con=1µFR040T∆∆Cnn()maxN∑4σλn=−×2()(z)*CnTbmI330λ==dm=1.08,z=0.4IN305IRN305×0.18∆=nrN==274.5/minCe0.2nn1000D=N,nr*==N=100/minn*D10∆C查表,h=5,max=0.812所以,Cb274.50.027σ=×20.812×(1.08−0.4)×××100%=68%n1000.12CTemNn0.2××0.121000(5)ts2≈==0.404(IIRdm−−×dL)(3300)0.182-19有一转速、电流双闭环调速系统,采用三相桥式整流电路,已知电动机参数:PN=550kW,UN=750V,IN=775A,nN=375r/min,Ce=1.92V·min/r,电枢回路总电阻R=0.12Ω,允许电流过载倍数λ=1.5,触发整流装置的放大系数Ks=75,电磁时间常数Tl=0.03s,机电时间常数Tm=0.09s,电流反馈滤波时间常数**Toi=0.002s,转速反馈滤波时间常数Ton=0.02s。设调节器输入输出电压Unm=Uim=Ucm=12V,调节器输入10
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