IEC 60605-4-2001 设备可靠性试验 第4部分：指数分布的统计规程 点估计，置信区间，预测区间，容差区间

标准号：IEC 60605-4-2001
中文标准名称：设备可靠性试验 第4部分：指数分布的统计规程 点估计，置信区间，预测区间，容差区间
英文标准名称：Equipment reliability testing - Part 4: Statistical procedures for exponential distribution - Point estimates, confidence intervals, prediction intervals and tolerance intervals
标准类型：L05
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：L05
国际标准分类号：03.120.10;29.020
适用范围：This International Standard provides statistical methods for evaluating point estimates, confidence intervals, prediction intervals and tolerance intervals for the failure rate of items, whose time to failure follows an exponential distribution. This implies that the failure rate (see IEV 191-12-02) is constant with respect to time. It should be noted that although reference is made above to failure rate, the numerical methods to be described are equally applicable to other event rates provided the times to the occurrence of the event follow an exponential distribution. Thus, with this qualification, the numerical methods will apply, for example, to constant failure intensities and constant repair rates (see IEV 191-12-04 and IEV 191-13-02 respectively). For convenience, however, and to avoid unnecessary repetition, reference will be made in what follows only to failures and failure rates. Use of the procedures in this standard should be supported by tests to confirm the validity of the assumption of constant failure rate or failure intensity (see IEC 60605-6). This standard is also applicable whenever a random sample of items is subjected to a test of times to failure for the purpose of estimating measures of reliability performance.