摘要
风险评估是汽车产品非标缺陷认定的常用方法之一。本文针对风险评估矩阵法在汽车缺陷危险性评价应用中存在的专家评语模糊性、假定属性权重相等和需要专家综合决策的实际问题,提出改进方法。运用梯形模糊数量化危险严重性、可能性和风险等级的主观或定性评语,通过层级分析法(AHP)理论中的成对比较法确定严重性和可能性相对风险值的影响权重,引入专家群体评估方式,依据模糊风险评估矩阵计算危险综合风险值。本文以某车型真空助力器缺陷为例进行分析,应用该方法计算出风险值,验证了该评价方法的工程实用性和有效性。
Risk assessment is one of the common methods of identify non-standard automobile productd efects. An improved risk matrix method was proposed based on trapezoid fuzzy number to solve some practical problems of assessing the defect hazard. Subjective or qualitative comments of severity, probability and risk rank of defect hazard were quantified by using trapezoid fuzzy number. The influence weight of severityand probability was determined by pair-wise comparison in analytic hierarchy process (AHP) theory. Riskevaluations from different analyses were synthesized. Taking the defect of vacuum booster as example, the risk value was calculated using the method. The results demonstrate the engineering practicability and effectiveness of the method.
作者
董红磊
陈玉忠
张金换
DONG Honglei;CHEN Yuzhong;ZHANG Jinhuan(China National Institute of Standardization, Beijing 100088, China;Department of Automotive Engineering, Tsinghua University, Beijing 100084, China)
出处
《汽车安全与节能学报》
CAS
CSCD
2016年第4期377-381,共5页
Journal of Automotive Safety and Energy
基金
质检公益性行业科研专项(282015G-3434)
中央科研业务费专项(282016Y4500)
关键词
汽车安全
汽车缺陷
风险评估
缺陷判定
模糊数
风险矩阵
automobile safety
automobile defect
risk assessment
defect judgment
fuzzy number
risk matrix
