测试性验证试验中的故障样本综合加权分配方法

Synthetic Weighted Method of Failure Samples Allocation in Testability

摘要:

针对目前测试性验证试验中故障样本分配考虑因素单一,分配结果不太合理,影响测试性验证评估准确度的问题,文章综合考虑故障样本分配的影响因素,提出了故障样本分配的综合加权方法；首先,在分析影响因素的基础上,明确了综合加权分配算法；然后对影响系数和影响因素的权值进行确定；最后,通过在某系统测试性验证试验中的应用表明,该方法考虑因素更加全面,与基于故障率的按比例分层抽样分配方法相比较,故障样本分配结果更加合理,测试性验证评估结果更加接近系统测试性设计的真实水平,更具有工程应用价值。

Abstract:

In the testability demonstration and evaluation test, the failure samples allocation consideres single influence factor, the allocation result is not too reasonable, it affected the accuracy of the testability demonstration and evaluation result. In order to solve the problem, the synthetic weighted method of failure samples allocation was proposed which considered the failure samples allocation influence factors synthetically. Firstly, on the basis of analyzing the influence factors, it cleared the synthetic weighted allocation algorithm; Then, it determined the influence coefficient and the value of the influence factors; Finally, a testability demonstration and evaluation test had been done on certain system. The test result showed, the method proposed in this article considerd more influence factors, comparing with the proportionate stratified sampling allocation based on failure rate, that the failure samples alloration based on the proposed method in this article was more rational and the result of demonstration test was much more approximate to the real level of product testability design, and it was more practical in project.