非参数增长曲线的累积失效函数均值表

Minitab 在包括以下各项的表中显示非参数增长信息:
  • 时间:连续失效(或修复)时间。
  • 累积失效函数均值:各系统的平均累积失效(或修复)数。如果您输入成本列,则 Minitab 会计算各系统的平均累积修复成本。
  • 标准误:累积失效函数均值的标准误。
  • 95 % 正态置信区间:累积失效函数均值的 95% 置信区间的下限和上限。

由于您使用的是非参数估计过程,因此累积失效函数均值将只在发生失效时更改。

示例输出

类型 1
系统:  ID
非参数估计

累积失效函数均值表




95% 正态置信区间
时间摘录 (Time)累积失效函数均值标准误下限上限系统
330.071430.0688300.010810.47218179
880.142860.0935220.039600.51540132
2500.214290.1096640.078590.58426128
2720.285710.1207360.124810.65408137
2870.357140.1280600.176860.72120181
3020.428570.1322600.234070.78471119
3170.500000.1336310.296130.84423182
3640.571430.1322600.363030.89945112
3670.642860.1280600.435060.94990167
3910.714290.1574210.463741.10019112
4020.785710.1490980.541681.13970175
4210.857140.1707470.580081.26653137
4310.928570.1585740.664441.29771155
4441.000000.1749640.709691.40906119
4621.071430.1585740.801651.43200101
4811.142860.1376610.902531.44718145
4981.214290.1490980.954561.54468182
5001.285710.1870440.966751.70992119
5001.357140.1918531.028721.79042128
5481.428570.2193281.057351.93013112
5521.500000.2422261.093042.05848137
6251.571430.2805661.107442.22982137
6351.642860.2596531.205222.23940169
6501.714290.2561201.279122.29750169
6571.785710.2706491.326792.40338182
6871.862640.2666551.406922.46596179
6871.939560.2608621.490122.52456181
7002.030470.2548261.587712.59671175
7082.130470.2745271.654982.74258169
7102.241580.2687551.772142.83537145
7102.352690.2575861.898332.91581155
7102.463800.2402672.035162.98273167
7192.630470.3472162.030843.40714137
7242.830470.4255942.108003.80055112
7243.030470.4439942.274054.03849128
7243.230470.4105592.518184.14424132
7303.730470.4713072.912214.77864101
7304.230470.4105593.497695.11677119
类型 2
系统:  ID
非参数估计

累积失效函数均值表




95% 正态置信区间
时间摘录 (Time)累积失效函数均值标准误下限上限系统
190.066670.0644060.010040.44284228
220.133330.0877710.036700.48447212
390.200000.1032800.072690.55029192
540.266670.1141800.115210.61721214
610.333330.1217160.162950.68186219
910.400000.1577620.184650.86652192
930.466670.1596290.238690.91237243
1190.533330.2079890.248341.14538192
1480.600000.2633120.253861.41809192
1730.666670.2610520.309451.43622190
1850.733330.2743340.352271.52661228
1870.800000.2699790.412891.55006235
1920.866670.2644350.476581.57604205
1940.933330.2576240.543351.60321216
2031.000000.2494440.613301.63052183
2051.066670.2576240.664421.71243243
2111.133330.2644350.717381.79046183
2421.200000.2699790.772101.86504190
2501.266670.2576240.850231.88706204
2641.333330.2775550.886642.00507243
2771.400000.2951460.926152.11630183
2931.466670.2807401.007862.13434184
3061.533330.3247791.012382.32237192
3691.600000.3098391.094682.33859206
3731.666670.3355481.123252.47298183
3821.733330.3192581.208102.48693200
4151.800000.3425401.239622.61370243
4161.871430.3405121.310072.67333235
4191.948350.3380971.386622.73764219
4192.025270.3493101.444352.83985228
4322.116180.3474411.533912.91948216
4342.216180.3450341.633373.00696204
4412.327290.3418391.745123.10369214
4472.452290.3374301.872623.21141212
4482.595150.3310332.021093.33227205
4482.738010.3153982.184663.43152206
4602.938010.2980092.408323.58420200
4613.188010.4498342.417764.20364192
4643.521340.5114782.648934.68108190
5034.021340.5353603.097785.22025184
5115.021340.5353604.074436.18831183

解释

对于类型 1 刹车组件,在第 444 天时的累积失效函数均值为 1.00000。也就是说,到第 444 天,单个系统所需的平均修复次数为 1。工程师以 95% 的置信度断定,到第 444 天的平均修复次数位于 0.70969 到 1.40906 这一区间内。

当具有类型 1 刹车组件的所有系统在第 730 天报废后,平均对每个系统进行的修复次数为 4.23047。工程师以 95% 的置信度断定,在第 730 天报废之前,一个系统的实际平均修复次数位于 3.49769 到 5.11677 这一区间内。