Kuyendera ndi ntchito yovomerezeka koma yosawonjezera, ndipo cholinga chathu ndikuchita zochepa, bola titapitiliza kukwaniritsa zofuna za kasitomala. Chiwerengero chovomereza zero (c = 0) dongosolo la zitsanzo chimafuna kuyesedwa kocheperako poyerekeza ndi mapulani ogwirizana a ANSI / ASQ Z1.4 (omwe kale anali MIL-STD 105), ndipo amakhala othandiza ngati wotsatsa ali ndi chidaliro kwambiri pamlingo wake wabwino.1
Dongosolo la ANSI / ASQ Z1.4 lili ndi zitsanzo n., Ndi nambala yolandirira c. Woyenderayo amayang'ana zinthu, ndikuvomera ngati malowa kapena ochepa kapena osakwanira amapezeka. Ndondomekozi zakonzedwa kuti zipatse (pafupifupi) mwayi wamaperesenti 95 kuvomerezedwa pamlingo wovomerezeka (AQL), yomwe ndi imodzi mwazigawo zomwe amasankha.
William A. Levinson, PE, FASQ, CQE, CMQOE ndiye mtsogoleri wa PC ya Levinson Productivity Systems komanso wolemba buku la The Expanded and Annotated My Life and Work: Henry Code's Universal Code for World-Class Success.
Anandipangira dongosolo la Squeglia c = 0 pa Marichi 2018. Ndidafunidwa kudziwa malingaliro owerengera a Squeaglia kuti ndifotokozere kukula kwake.
Ndidawerenga buku lake, la 5, koma ndidalephera. Chifukwa chake ndikuthokoza kwambiri chifukwa cha nkhani yanu. Ndipo ndili ndi funso limodzi patsamba lanu.
M'buku la Squeaglia, Adauza kuti adagwiritsa ntchito Hypergeometric distirbution kuti awerenge bwino, koma mudangogwiritsa ntchito Binomial yogawa
Pazosindikiza 5, "Zero Acceptance Number Sampling Plans", sindinapeze momwe amawerengera kukula kwake n.
Tithokze Mr. Levinson chifukwa cholemba papepala la C = 0. Zitsanzo zazithunzi zomwe zalembedwa papepala lake ndi chimodzi mwazida zothandiza kwambiri zomwe zilipo. Ndikufuna kuwonjezera kuti posachedwa pansi pa AS9138 ndi ARP9013 matanthauzowa adasinthidwa kukhala ovomerezeka a Quality Level (AQL), Equal Risk Point (ERP), Lot Tolerance Percent Defective (LTPD), ndi Rejectable Quality Level (RQL). Amangokhala mfundo zosiyana pamtundu womwewo wokhala ndi mwayi wololeza 0.90-0.95, 0.50, 0.10, ndi 0.05 motsatana. Pa nkhondo yachiwiri yapadziko lonse, malingaliro a ogula (LTPD) adasiyidwa m'malo mwa wopanga malingaliro (AQL) chifukwa, monga HR Bellinson ananenera; Zinthu zofananira 20,000,000 zinali kugulidwa kuchokera kwaopitilira 50 osiyanasiyana, ndipo dongosolo la ac = 0 limaganiziridwa kuti silabwino kwa ogulitsa ang'ono; kukana malonda awo nthawi zambiri kuposa ogulitsa ogulitsa omwe ali ndi mulingo wofanana (ASA 105th msonkhano wapachaka, Januware 27th 1946.). Zachidziwikire kuti mapulani a AQL atha kukhala ndi zitsanzo zazikulu kuposa c = 0 mapulani kuti "awongolere" njira yogwirira ntchito pamalo a AQL yopereka mwayi wovomerezeka, akadali ndi mfundo ya ogula omwewo a LTPD. Sikoyenera kunena kuti dongosolo la ac = 0 lili ndi AQL chifukwa popanga, malingaliro ake ndi ogula, osati wopanga. Ichi ndichifukwa chake kuthekera kwa 0.542 kovomerezeka mu chitsanzo cha Mr. Levinson ndi n = 15, c = 0 pazambiri ndi 4% yosagwirizana (4.0 AQL). Sitingathe kupanga zosasintha c = 0 mapulani azitsanzo ndi zoopsa za opanga. Uku ndiye kudatsogolera ndikubadwa kwamapulani azitsanzo za AQL.
Poganizira wogula - Ndondomeko yazitsanzo zomwe zimapeza zosagwirizana nthawi zambiri, zikugwira ntchito yomwe idafunidwa motero sizifunikira kukhwimitsidwa. Ndipokhapo chuma chazomwe zikuwonetsetsetsetsetsetsetsetsetsetsetsitsi pamene kulipira ndalama zopezera zosagwirizana pang'ono pambuyo pake kudzaposa kuwunika kowunika komwe tidzalimbitsa kuyendera.
Pali mitundu yambiri yazitsanzo monga MIL-STD-105, MIL-STD-1916, APR9013, ndi AS9138 kungotchulapo ochepa. Ambiri ali ndi malingaliro osiyana ndipo zonse zimakhala zosokoneza pang'ono, koma mwamwayi masamu omwe amakhalapo amakhalabe osasintha ndikuwulula kuti ndi mtundu wina "wa milomo" pa OC Curve yomweyo.
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Nthawi yolembetsa: Oct-15-2019