平(ping)均(jun)無故(gu)(gu)(gu)障(zhang)(zhang)(zhang)工(gong)作(zuo)時間。平(ping)均(jun)無故(gu)(gu)(gu)障(zhang)(zhang)(zhang)工(gong)作(zuo)時間是(shi)衡量一個產(chan)(chan)品,尤其(qi)是(shi)電(dian)器(qi)產(chan)(chan)品的(de)(de)(de)可(ke)靠性(xing)指標,單位為小(xiao)時,它反(fan)映了產(chan)(chan)品的(de)(de)(de)時間質量,是(shi)體(ti)現產(chan)(chan)品在規定(ding)時間內保持功(gong)能的(de)(de)(de)一種(zhong)能力。具體(ti)是(shi)指相鄰兩次故(gu)(gu)(gu)障(zhang)(zhang)(zhang)之(zhi)間的(de)(de)(de)平(ping)均(jun)工(gong)作(zuo)時間,也稱(cheng)為平(ping)均(jun)故(gu)(gu)(gu)障(zhang)(zhang)(zhang)間隔。概(gai)括的(de)(de)(de)是(shi),產(chan)(chan)品故(gu)(gu)(gu)障(zhang)(zhang)(zhang)少(shao)的(de)(de)(de)就(jiu)是(shi)可(ke)靠性(xing)高,產(chan)(chan)品的(de)(de)(de)故(gu)(gu)(gu)障(zhang)(zhang)(zhang)總數(shu)與壽命單位總數(shu)之(zhi)比是(shi)故(gu)(gu)(gu)障(zhang)(zhang)(zhang)率。
它僅適用于可維修產(chan)品,同(tong)(tong)時(shi)(shi)(shi)也規(gui)(gui)定產(chan)品在總的(de)(de)(de)(de)(de)使用段累計(ji)(ji)工(gong)(gong)(gong)作(zuo)時(shi)(shi)(shi)間(jian)(jian)與(yu)故(gu)(gu)障(zhang)(zhang)次數(shu)(shu)的(de)(de)(de)(de)(de)比值為(wei)平均無(wu)故(gu)(gu)障(zhang)(zhang)工(gong)(gong)(gong)作(zuo)時(shi)(shi)(shi)間(jian)(jian)。資產(chan)陣列產(chan)品一般(ban)不低于5萬小時(shi)(shi)(shi),平均無(wu)故(gu)(gu)障(zhang)(zhang)工(gong)(gong)(gong)作(zuo)時(shi)(shi)(shi)間(jian)(jian)是可修復產(chan)品的(de)(de)(de)(de)(de)可靠(kao)性的(de)(de)(de)(de)(de)一種基本參數(shu)(shu)。不良方(fang)法為(wei),在規(gui)(gui)定的(de)(de)(de)(de)(de)條件下和規(gui)(gui)定的(de)(de)(de)(de)(de)時(shi)(shi)(shi)間(jian)(jian)內,產(chan)品的(de)(de)(de)(de)(de)壽(shou)命、單位總數(shu)(shu)與(yu)故(gu)(gu)障(zhang)(zhang)總數(shu)(shu)之比,平均無(wu)故(gu)(gu)障(zhang)(zhang)工(gong)(gong)(gong)作(zuo)時(shi)(shi)(shi)間(jian)(jian)值是產(chan)品設計(ji)(ji)時(shi)(shi)(shi)要考慮(lv)的(de)(de)(de)(de)(de)重要參數(shu)(shu),可靠(kao)度(du),工(gong)(gong)(gong)程師或(huo)者是設計(ji)(ji)工(gong)(gong)(gong)程師經常使用各種不同(tong)(tong)的(de)(de)(de)(de)(de)方(fang)法與(yu)標(biao)準來估計(ji)(ji)產(chan)品的(de)(de)(de)(de)(de)平均無(wu)故(gu)(gu)障(zhang)(zhang)工(gong)(gong)(gong)作(zuo)時(shi)(shi)(shi)間(jian)(jian)。不過這(zhe)些時(shi)(shi)(shi)間(jian)(jian)方(fang)法估計(ji)(ji)到(dao)的(de)(de)(de)(de)(de)值和實際(ji)的(de)(de)(de)(de)(de)平均故(gu)(gu)障(zhang)(zhang)間(jian)(jian)隔(ge)仍有相當(dang)的(de)(de)(de)(de)(de)差(cha)距。計(ji)(ji)算(suan)平均故(gu)(gu)障(zhang)(zhang)間(jian)(jian)隔(ge)的(de)(de)(de)(de)(de)目的(de)(de)(de)(de)(de)是為(wei)了(le)找出設計(ji)(ji)中的(de)(de)(de)(de)(de)薄弱環節。
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