>> P.424
Ⅲ-28■운전패턴의검토예AC서보모터를사용하는경우●사용조건취부방법수평사용탑재질량W30kg스트로크L300mm이동속도(설정속도)V300mm/s가감속시간ta0.2s정속이동시간tc0.8s1싸이클시간t2.0s●위치결정테이블의가선정TU60S49/AT103G10S03를가선정.기본사양볼스크류의리드ℓ10mm스트로크300mm최고속도500mm/s기동토크TS0.08Nㆍm테이블관성JT0.93×10-5kgㆍm2커플링관성JC0.290×10-5kgㆍm2●모터사양사용AC서보모터SGMAV-01A정격토크0.318Nㆍm모터관성JM0.380×10-5kgㆍm2시간s스트로크시간s2.00.20.80.2TaTPTL속도mm/s300300mm토크N.m●가속에필요한토크의계산ㆍ부하토크TLℓTL=TS+μWgㆍ2πη0.01=0.08+0.01×30×9.8×2×π×0.9≒0.09Nㆍmㆍ가속토크TaℓJL=Wㆍ()22π0.01=30×()2≒7.60×10-5kgㆍm22×π6060N=V×=0.3×=1800min-1ℓ0.012πNTa=(JT+JM+JC+JL)ㆍ60ta2×π×1800=(0.93+0.380+0.290+7.60)×10-5×60×0.2≒0.09Nㆍmㆍ가속에필요한토크TPTP=TL+Ta=0.09+0.09=0.18Nㆍm여기서,TP×k(안전계수)가모터의출력토크TM보다작은것을확인합니다.이값을초과하는경우는,최고속도나가감속시간의재검토를시행하여주십시오.검토중의운전패턴은,아래와같이출력토크TM보다작은값이됩니다.TM=0.318×3≒0.95NㆍmTP×k=0.18×1.3=0.23Nㆍm<TM●실효토크의검토ㆍ실효토크TrmsTrms==≒0.09Nㆍm모터정격토크는,실효토크Trms보다크기때문에,검토중의운전패턴에서의연속사용이가능하다라고판단가능합니다.TP2×ta+(TP-2×TL)2×ta+TL2×tct0.232×0.2+(0.23-2×0.09)2×0.2+0.092×0.82.0
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