六制動(dòng)過程計(jì)算

1、六制動(dòng)過程計(jì)算數(shù)值數(shù)值序號(hào)序號(hào)名稱名稱公式公式單位單位2P8P148額定電壓時(shí)的軸向磁拉力F=1.225X106Davtg2)(???iLeff?公式中①i=0.707（正弦波）?②不考慮電壓變化和轉(zhuǎn)差率引起的磁拉力變化③不考慮轉(zhuǎn)子斜槽引起的磁拉力變化N210.26301.59149制動(dòng)轉(zhuǎn)矩TT=??sinBAVCRF式中——制動(dòng)面錐度?FC——制動(dòng)彈簧力RBAV——制動(dòng)盤平均數(shù)半徑——銅絲、石棉摩擦系數(shù)?N.MNm15.8722.51

2、78.50.0791250.4315.8722.5178.50.079125150制動(dòng)轉(zhuǎn)矩倍數(shù)TTTTlTTl=Tlm?式中Tl——負(fù)荷轉(zhuǎn)矩。由環(huán)鏈電動(dòng)葫蘆計(jì)算書給定——機(jī)械效率。由環(huán)鏈電動(dòng)葫蘆m?計(jì)算書給足TTl——額定負(fù)荷制動(dòng)所需轉(zhuǎn)矩N.mN.mN.m4.13.8454.5240.850.3845170.9351.10.850.935151制動(dòng)面上正壓力FP=BAVTRT?N466.44466.44160總的磁路飽和系數(shù)FT=??A

3、TATATjATjATtATt????21211.311.42161轉(zhuǎn)子開始軸向竄動(dòng)時(shí)磁路飽和系數(shù)F′=1(FT1))380(FsmFafFC?1.1981.231162斷電到始轉(zhuǎn)子竄動(dòng)所需時(shí)間t1=XLnX)(2Im2TTNETFFRfUKF???afCFFFsm?)380(式中R2——轉(zhuǎn)子電阻S0.0870.067163轉(zhuǎn)子開始竄動(dòng)到制動(dòng)環(huán)與制動(dòng)面接觸時(shí)間t2=[]2)(??FaFCgZGS?式中Z——軸向竄動(dòng)量Sm0.0210.0

4、020.019164斷電后電機(jī)轉(zhuǎn)速n′=no(1SN)rmin3673.8918.45165t1t2時(shí)間轉(zhuǎn)速增量2)21(375GDttTnTL????rmin420.10310.05166制動(dòng)環(huán)與制動(dòng)面接觸后電機(jī)停止的時(shí)間t3=)(375)(2LTTTnnGD????S0.320.115167等效制動(dòng)時(shí)間tE=(t1t2)322tnnn???S0.3960.289168荷重下滑量與標(biāo)準(zhǔn)值之比S′dSd=tE0.6%6648.16169