基于变权层次分析法的故障模式风险评估  

Risk Assessment of Failure Mode Using Variable Weight Synthesis and AHP

作　　者：张树忠[1,2] 曾钦达 

机构地区：[1]福建工程学院机械与汽车工程学院,福建福州350108 [2]福建省特种设备检验研究院,福建福州350008

出　　处：《机床与液压》2014年第3期184-186,共3页Machine Tool & Hydraulics

基　　金：国家质检总局科技计划项目(2012QK025)

摘　　要：针对传统故障风险评估RPN分析方法存在的缺陷,提出一种基于变权模糊层次分析法的设备故障风险半定量评估方法;根据生产损失、维修费用、安全影响、环境影响4个因素,通过引入模糊综合评估和激励变权,来定量化的对故障严重程度进行评估;通过故障频率、严重程度以及可探测度3个因素,采用变权层次分析法进行故障风险评估,提高了风险评估与客观实际的相符性。以某起重机零部件故障风险评估为例,表明了该方法的有效性和可行性。Aiming at the disadvantage of failure risk assessment using risk priority number （RPN）,the semi-quantitative method using fuzzy variable weight synthesis and analytic hierarchy process （AHP）was brought forward. The model of the risk assessment was divided into two layers. Firstly,according to the production loss,repair costs,safety and environment impact,fuzzy AHP and encour-agement variable weight synthesis were introduced into the quantitative assessment of failure severity to improve its accuracy and objec-tiveness. Then,via severity,occurrence,and detection,variable weight and AHP were adopted for failure mode risk assessment to make assessment results closer to the reality. At last,an instance was provided to illustrate the potential applications of the proposed model. The result shows the proposed approach is effective and feasible.

关 键 词：风险评估 模糊 层次分析 变权综合 

分 类 号：TH17[机械工程—机械制造及自动化]