6SIGMA度量指标

6Sigma6Sigma----------1-5Lnan6FTY(FirstTimeYield)-FTY(FirstTimeYield)-RTY(RolledThroughputYield)-FTYRTY=FTY1×FTY2×……×FTYnFTYinFTYRTY42-12410122119934118=80%80%RTY12FTY18/10=80%34FTY27/9=78%10012100×80%=803480×78%=62100×80%×78%=100×62.4%=62.480%×78%=62.4%FTY1×FTY2=RTY62%638%FTY=99%FTY3.4ppm“”RTYFTYFTY99%50RTY60.5%40%100%100%DPUDPODPMODPUDPODPMODPU(DefectPerUnit)-“”“”DPU=/DPO(DefectPerOpportunity)-“”“”DPO=/DPMO(DefectPerMillionOpportunity)-“”“”100000DPMO=DPO×100000045CTQUSL55462045DPU=5/20=0.25—0.25DPO=5/20×4=0.0625—6.25%DPMO=0.0625×1000000=62500—100000062500DPUDPMOZZminZpuZplY=10±0.01A1010.00910.0059.9929.99910.00810.0079.9979.99910.0099.995B1010.00210.0039.9989.99910.00110.0039.9999.99910.0029.998A10.0020.00632B10.00030.00211ZA1.27B4.60B10BAJITA3030A7A102927252429262325302426.2S=2.44LSL=23Z=26.2-23/2.44=1.371.372330