基于分系统数据的可靠性鉴定试验新方法  

New Methodology for Determining Reliability Qualification Test Scheme with Subsystem Test Data

作　　者：刘珂[1] 赵英俊[1] 杨江平[2] 

机构地区：[1]空军工程大学防空反导学院,陕西西安710051 [2]空军预警学院,湖北武汉430019

出　　处：《雷达科学与技术》2015年第1期109-112,共4页Radar Science and Technology

摘　　要：现有的可靠性鉴定试验方案在一定的风险约束下需要较大的试验工作量,而大型复杂装备受经费、试验条件等因素的限制难以进行大量的试验。针对这一问题,以整机故障率为验证指标,提出利用分系统试验数据制定整机可靠性鉴定试验方案的新方法。该方法首先利用分系统试验数据计算整机故障率置信上限,然后利用两点分位数方法确定整机故障率的先验分布参数,最后依据贝叶斯最大后验风险准则制定了新的可靠性鉴定试验方案。实例对比分析表明,与传统试验方案相比,新方案将明显节约试验时间,减少试验工作量。The existing reliability qualification test schemes need large workload with a specified risk level,but for the large complex equipment,abundant tests can not be carried out subject to limited outlay and test condition.To solve this problem,taking the system failure rate as a target,a new method is presented to make full use of the subsystem test data.Firstly,the subsystem test data is used to calculate the confidence bound of system failure rate.Then,the two-percentile method is applied to determine the prior distribution of system failure rate.Finally,a new reliability demonstration test scheme is defined according to the Bayesian maximum posterior risk rule.Compared with the classical reliability test scheme,the new scheme can obviously save test time and reduce the test workload.

关 键 词：可靠性 故障率 鉴定试验 分系统数据 贝叶斯方法 

分 类 号：TN956[电子电信—信号与信息处理]