起重运输机械Issue(7)：53-59,7.
起重机安全评价的随机可变集方法
摘要
Abstract
Random variable set method for crane safety rating is proposed to solve the problem of coexistence of fuzziness and randomness in crane security assessment.Relative membership degree of each assessment indicator to each security level is determined based on the principle of unity of opposites of variable set;the comprehensive relative membership degree of crane samples is calculated by using the identification model of variable set.With the random variable introduced into the comprehensive relative membership degree,confidence interval of level characteristic value is obtained through the 3σ rule to assess security levels of cranes.The method is applied to four general bridge crane samples and compared with other crane evaluation methods.Calculations of real examples show that the random variable set method is more reasonable than unascertained measure theory method and fuzzy analytical hierarchy process method.关键词
通用桥式起重机/随机可变集/安全评价/3σ准则/级别特征值Key words
general bridge crane/random variable set/security assessment/3σ rule/level characteristic value分类
机械制造引用本文复制引用
丁高耀,李爱华,赵章焰..起重机安全评价的随机可变集方法[J].起重运输机械,2017,(7):53-59,7.基金项目
国家质量监督检验检疫总局科技计划项目(2015QK262) （2015QK262）
