6sigma的发展（PDF31页）

•Motorola198636680746209.65232.663.470.019•5,20%•SixSigma140•MOTOROLA21.3%!♦Motorola-1987♦TexasInstruments-1988♦ABB(AseaBrownBoveri)-1993♦AlliedSignal-1994♦GeneralElectric-1995♦Kodak-1995♦Westinghouse-1996♦Siemens(manufacturingonly)-1997♦Nokia-1997♦Sony-199750SixSigma50SixSigma…3030……¾..¾¾-¾¾¾¾-¾¾!!!¾.,.¾,..()()......••••(Motorola,AlliedSignal)6s//••15-25%•66,807•••••99%•CTQ•5%•3.4•••••99%•CTQ6Sigma:(statistics,DOE...)Whatwasmissing--SixSigma!QualityVisionexistedforyears(ISO,Zerodefects)()()“””“”“”“”“/•••œœœœ(X)f(X)Y=Y=YX„Y„„„„„„X1...XN„„„„„XYXY•CTQs••YCTQYYYYYY“”()“”()•••350o350o5•9095%()CTQ/CTQ(//)••()CTQ6SigmaQFD()(QFD)2.(ProcessMap)3.(StructureTree)4.(PeretoChart)5.(MSA)6.7.6Sigma(DFSS)8.9.10.(DOE)11.(SPC)(TQ)-(CQ)----•1995~1996------•1997------•1998•--•--•--•1999•--•--•--,•2000------,•••••/(CTQs)------------------(COPQ)---------3.46Sigma-