Nnyocha ahụ bụ ọrụ dị mkpa mana ọ bụghị ọrụ na-agbakwunye, ebumnuche anyị bụ ime obere obere ka o kwere mee, ma ọ bụrụhaala na anyị ga-emezu ihe ndị ahịa anyị chọrọ. Onodu nnabata efu (c = 0) nlele nlele achoro nleba anya ala karia atumatu ANSI / ASQ Z1.4 (nke mbu MIL-STD 105), ma gharia ike ma oburu na onye na ebunye ya nwere obi ike n ’onodu odi elu.1
Atụmatụ ANSI / ASQ Z1.4 nwere ndị tozuru oke n, yana nọmba nnabata c. Onye nyocha ahụ na-enyocha ihe ndị ahụ, ma na-anakwere nke ahụ ma ọ bụrụ na achọpụtara c ma ọ bụ erughị eru ma ọ bụ nke na-adịghị mma. Ezubere atụmatụ ndị a iji nye (nnabata) ohere nke pasent 95 nke nnabata n'ọkwa ogo (AQL) nke a na-anabata, nke bụ otu n'ime usoro maka atụmatụ ahọpụtara.
William A. Levinson, PE, FASQ, CQE, CMQOE bụ isi nke Levinson Productivity Systems PC na onye edemede nke akwụkwọ bụ Expanded and Annotated My Life and Work: Henry Ford's Universal Code for World-Class Success.
E webatara m atụmatụ Squeglia c = 0 na Machị nke afọ 2018. Achọrọ m ịmata mgbako mgbakọ Squeaglia iji kọwaa nha nke atụ.
Agụrụ m akwụkwọ ya, mbipụta nke ise mana achọtaghị. Ya mere, ana m ekele gị maka edemede gị. Enwere m otu ajụjụ na edemede gị.
Na akwụkwọ Squeaglia, Ọ gwara na ọ jiri mgbagha Hypergeometric mee ihe maka ngụkọta zuru oke, mana ị jiri naanị nkesa Binomial
Na mbipụta nke ise, "Atụmatụ Nnabata Nọmba Mbinye Aka", enweghị m ike ịchọpụta etu o si gbakọọ nha ụdị n.
Ekele dịrị Mr. Levinson maka akwụkwọ ya na atụmatụ nlele C = 0. Sizekpụrụ nke usoro ihe edepụtara n’akwụkwọ ya bụ otu n’ime ngwa ọrụ kacha baa uru. Ọ ga-amasị m ịgbakwunye na nso nso a n'okpuru AS9138 na ARP9013 nkọwapụta ahazi maka ogo ogo ogo (AQL), Equal Risk Point (ERP), Lot Tolerance Perfect Defective (LTPD), na Rejectable Quality Level (RQL). Ha bụ n'ezie ihe dị iche iche dị iche iche n'otu usoro njirimara ọrụ nwere ike ịnakwere 0.90-0.95, 0.50, 0.10, na 0.05 n'otu n'otu. N’oge agha uwa abuo, a gbahapụrụ echiche nke ndị na-azụ ahịa (LTPD) maka ihu ọma nke onye nrụpụta (AQL) n’ihi na, dịka HR Bellinson kwuru; A na - enweta ihe ndị yiri ihe ruru 20,000,000 site na ihe karịrị ndị na - eweta ngwa ahịa dị iche iche iri ise, a na-echekwa atụmatụ nlele mkpụrụ ndụ 0 na-ezighi ezi nye obere ndị na - eweta ya; ịjụ ngwaahịa ha ọtụtụ oge karịa nnukwu ndị na-eweta ngwaahịa na-enwe otu ọkwa ogo (ASA 105th nzukọ kwa afọ, Jenụwarị 27th 1946.). N'ezie atụmatụ atụmatụ dabere na AQL nwere ike ịnwe nha nha buru ibu karịa c = atụmatụ 0 iji "gbagọọ agbagọ" usoro njirimara njirimara na akara AQL na-enye nnukwu ohere nnabata, ebe ọ ka na-ejide otu LTPD. O zighi ezi ịsị na atụmatụ ac = 0 nwere AQL n'ihi na site na imewe, echiche ya bụ onye na-azụ ahịa, ọ bụghị onye na-emepụta ihe. Nke a bụ ihe kpatara 0.542 nke puru ịnakwere na Maazị Levinson na n = 15, c = 0 maka ọtụtụ bụ 4% anaghị ekwekọrịta (4.0 AQL). Anyị enweghị ike ịmepụta atụmatụ nke usoro c = 0 na-agbanwe agbanwe na ihe gbasara onye nrụpụta n'uche. Nke a bụ isi atụmatụ na ọmụmụ nke atụmatụ atụmatụ dabere na AQL.
N'iburu onye na-azụ ya n'uche - Atụmatụ nlele nke na-achọta ihe ndị na-ekwekọghị n'ọtụtụ oge, na-arụ ọrụ ọ chọrọ ka ọ bụrụ na ọ dịghị mkpa ka a gbasie ya ike. Ọ bụ naanị mgbe ọnọdụ akụnụba nke ọnọdụ kwuru ka ego nke ịchọta ole na ole na-emezighị emezi gafee ibu karịa nyocha ọzọ anyị ga-eme nyocha.
Enwere otutu usoro nlere anya dị ka MIL-STD-105, MIL-STD-1916, APR9013 na AS9138 ịkpọ aha ole na ole. Imirikiti nwere echiche dị iche-iche nke echiche ya niile na-aghọ obere ihe mgbagwoju anya, mana obi ekele na mgbakọ na mwepụ na-adịgide adịgide ma na-ekpughe na ọ bụ naanị agba "lipstick" dị iche na otu OC Curve.
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Oge post: Ọkt-15-2019