CPK为0.15时合格率是多少? cpk达到1.33,那么产品的理论合格率是多少?
\u8d28\u91cf\u5927\u5e08\u5e2e\u5fd9\u5206\u6790\u4e00\u4e0b\u4ec0\u4e48\u60c5\u51b5\u4f1a\u51fa\u73b0CPK\u4e3a0.7\uff0c\u4f46\u5408\u683c\u7387\u4e3a100%\u3002\u5747\u503c\u548c\u89c4\u683c\u4e2d\u5fc3\u503c\u53d1\u751f\u4e86\u504f\u79fb\u4e86\u3002\u800c\u4e14\u6700\u5927\u503c\u6700\u5c0f\u503c\u53c8\u5728\u89c4\u683c\u4e2d\u5fc3\u4e4b\u5185\uff0c\u5c31\u4f1a\u53d1\u751f\u8fd9\u79cd\u60c5\u51b5\u3002\u4f46\u8fd9\u53ea\u662f\u5b9e\u9645\u6837\u672c\u8ba1\u7b97\u7684\u5408\u683c\u7387\u662f100%\uff0c\u5b9e\u9645\u4e0a\u9884\u671f\u7684\u7ec4\u5185\u548c\u6574\u4f53\u7684\u5408\u683c\u7387\uff0c\u90fd\u4e0d\u53ef\u80fd\u662f100%\u3002
CPK=1.33\u65f6\uff0c\u4ea7\u54c1\u7684\u7406\u8bba\u5408\u683c\u7387=100%-6210/100\u4e07\uff08\u4e0d\u5408\u683c\u73870.621%\uff09=99.3790%
\u8fd9\u662f\u6709\u504f1.5\u897f\u683c\u739b\u65f6\u7684\u60c5\u51b5\uff1b
\u4e0d\u504f\u7684\u65f6\u5019\u662f\uff1a
CPK=1.33\u65f6\uff0c\u4ea7\u54c1\u7684\u7406\u8bba\u5408\u683c\u7387=100%-\u4e0d\u5408\u683c\u738763/100\u4e07\uff08\u4e0d\u5408\u683c\u73870.0063%\uff09=99.9937%
0.5T/σ=0.5T*0.9/T=0.45 ,查概率表得面积=0.17344,正负两个面积,所以合格率=34.688%
找那个萝莉打给89%十左右了。
绛旓細0.5T/蟽=0.5T*0.9/T=0.45 锛屾煡姒傜巼琛ㄥ緱闈㈢Н=0.17344锛屾璐熶袱涓潰绉紝鎵浠鍚堟牸鐜=34.688
绛旓細鏈鍚庯紝鏍规嵁CPK鍏紡锛屽彲浠ュ緱鍒癈PK=1.33=(USL-渭)/(3蟽)锛屼唬鍏ヤ笂杩板叕宸寖鍥村拰杞崲鍚庣殑鍏樊鍊硷紝瑙e緱鏍锋湰鏍囧噯宸=(USL-LSL)/(6*CPK)=0.000707 寮у害銆傚洜姝わ紝璇ヤ骇鍝佺殑鍏樊涓0.00131*180/蟺=0.075掳锛屾垨鑰呯害涓0.000707 寮у害銆
绛旓細Ca=锛20.1-20锛/锛1/2锛=0.2 Cp=1/锛6脳0.15锛=1.111 CPK=1.111锛1-0.2锛=0.888 CPK鎺ㄧ畻寤虹珛鍦ㄧǔ瀹氳繃绋嬶紝鎸夌収CPK瑕佹眰鏀堕泦鏁版嵁锛岃绠楄繃绋嬪潎鍊煎強鏍囧噯宸侰PK=1.33=4/3 CPK=CP锛1-Ca锛塁a涓鸿鏍间腑蹇冧笌瀹為檯娴嬮噺骞冲潎鍊肩殑鍋忕Щ绯绘暟 瑕佽繘琛屾帹绠楋紝鐞嗚鍊硷紝鍋囪Ca=0 CPK锛滳P锛濓紙瑙勬牸涓婇檺锛...
绛旓細鍜屽鎴峰崗鍟嗭紝璁剧疆涓涓皬浜0鐨勪笅闄愬硷紝姣斿-0.15锛岃绠CPK锛屼細鏇存湁鎰忎箟涓浜涖備互涓婃槸鎴戜釜浜虹殑鐞嗚В锛屽鏈夊叾浠栧ソ鐨勫缓璁紝璇峰ぇ瀹跺垎浜嚭鏉ワ紝璋㈣阿锛
绛旓細浣犺繖鏄崟杈瑰叕宸CPK璁$畻锛屽叕寮忔槸 鏃犲亸绉 Cpk=(USL-M)/3蟽 鏃犲亸绉 Cpk=(M-LSL)/3蟽 M鏄洰鏍囧 鏀瑰杽瓒婂ソ锛岋紙USL-M锛変笉鍙橈紝蟽 鍙樺皬锛孋PK鍙樺ぇ 鍙﹀涓涓紝鍙岃竟 鍏樊璁$畻鐨鏃跺涓庣洰鏍囧兼棤鍏筹紝涓庡叕宸腑蹇冨兼湁鍏炽傝兘鍚︽槑鐧斤紵
绛旓細骞冲潎鍊煎亸涓婇檺,CPK=CPU=(USL-X bar)/3/S=(30.20-30.05)/3/0.04=1.25 CPK鍩烘湰鍚堟牸,鎺ㄨ崘瑕佹眰涓篊PK>1.33
绛旓細Ca=锛20.1-20锛/锛1/2锛=0.2 Cp=1/锛6脳0.15锛=1.111 CPK=1.111锛1-0.2锛=0.888 CPK鎺ㄧ畻寤虹珛鍦ㄧǔ瀹氳繃绋嬶紝鎸夌収CPK瑕佹眰鏀堕泦鏁版嵁锛岃绠楄繃绋嬪潎鍊煎強鏍囧噯宸侰PK=1.33=4/3 CPK=CP锛1-Ca锛塁a涓鸿鏍间腑蹇冧笌瀹為檯娴嬮噺骞冲潎鍊肩殑鍋忕Щ绯绘暟 瑕佽繘琛屾帹绠楋紝鐞嗚鍊硷紝鍋囪Ca=0 CPK锛滳P锛濓紙瑙勬牸涓婇檺锛...
绛旓細CPK鍙樺ぇ鍙﹀涓涓綘杩欐槸鍗曡竟鍏樊CPK璁$畻;3蟽鏃犲亸绉Cpk=(M-LSL)/锛屜冨彉灏忥紝鍙岃竟鍏樊璁$畻鐨鏃跺涓庣洰鏍囧兼棤鍏;3蟽M鏄洰鏍囧兼敼鍠勮秺濂斤紝锛圲SL-M锛変笉鍙橈紝鍏紡鏄棤鍋忕ЩCpk=(USL-M)/銆傝兘鍚︽槑鐧斤紝涓庡叕宸腑蹇冨兼湁鍏