文档摘要:为修正系统故障演化过程中故障事件发生概率,提出了一种故障事件发生概率修正方法.基于多专家经验融合,对专家给出的不同因素条件下故障事件发生概率的评估值进行修正.方法涉及DS证据论、皮尔逊相关性、信息熵等方法.讨论了系统故障演化过程与故障事件发生概率的关系;研究了故障事件发生概率不准确的原因;构建了故障事件发生概率修正方法的数学模型.通过实例演示了分析流程.研究表明:故障事件发生概率是实现系统故障演化过程定量描述的基础;概率不准确的原因在于方法论、系统及因素、技术限制三方面;修正过程中也可得到评估数据重要度、概率波动重要度、专家重要度和因素重要度等相关系数.研究可对故障事件发生概率进行修正.
Abstract:Tocorrectfaulteventprobabilityinthesystemfaultevolutionprocess,acorrectionmethodforfaulteventoccurrenceprobabilityisproposed.Basedonacombinationofpreviousexperiencegatheredinthisfield,asetofevaluationvaluesforfaulteventoccurrenceprobabilityunderdifferentfactors,aspreviouslyanalyzedbyexperts,aremodified.ThesemethodsinvolveDSevidencetheory,Pearsoncorrelation,informationentropy,andothers.Thispaperdiscussestherelationshipbetweenthesystemfaultevolutionprocessandthefaulteventoccurrenceprobability;thecausesoffaulteventoccurrenceprobabilityarethenanalyzed,afterwhichamathematicalmodelforthefaulteventoccurrenceprobabilitycorrectionmethodisconstructed.Thismethodcombinestheevaluationvaluesforfaulteventoccurrenceprobabilitybasedonevaluationscarriedoutbynumerousexpertsinthefield,usingevidencetheorytoformaprobabilityevaluationmatrixforfaultevents.Pearsoncorrelationisusedtoestablishacorrelationmatrixfortheoccurrenceoffaultevents;theinformationvectorforfaulteventoccurrenceprobabilityisthenobtainedusingthiscorrelationmatrix.Usingtheevaluationmatrixtoobtaintheinformationentropyvectoroffaulteventoccurrenceprobability,theinformationvectorandinformationentropyvectorcanbesynthesizedtoobtainacorrectionvectorforfaulteventoccurrenceprobability.Finally,theevaluationvalueforfaulteventoccurrenceprobabilityiscorrectedtoobtainacorrectionvector.Theanalyticalprocessisthendemonstratedusinganexample.Existingresearchshowsthatthefaulteventoccurrenceprobabilityisthebasisforobtainingaquantitativedescriptionofthesystemfaultevolutionprocess.Thereasonfortheinaccuracyofthisprobabilityliesinmethodology,system,andfactors,aswellastechnicallimitations.Duringthecorrectionprocess,relevantcoefficientssuchastheimportanceofevaluationdata,theimportanceofprobabilityfluctuation,theimportanceofexpertopinion,andtheimportanceofotherfactorscanalsobeobtained.Theresearchcanthusprovideananalyticalmethodfortherelevantparameters.
作者:李莎莎 崔铁军Author:LIShasha CUITiejun
作者单位:沈阳理工大学环境与化学工程学院,沈阳110159
刊名:安全与环境学报 ISTICPKU
Journal:JournalofSafetyandEnvironment
年,卷(期):2024, 24(6)
分类号:X913
关键词:安全科学技术基础学科 系统故障演化过程 故障事件发生概率 专家经验融合 修正方法
Keywords:basicdisciplineofsafetyscienceandtechnology systemfaultevolutionprocess probabilityoffailureevent integrationofexpertexperience correctionmethod
机标分类号:TN912.34F830.2F293.3
在线出版日期:2024年7月4日
基金项目:国家自然科学基金系统故障演化过程中故障事件发生概率的修正方法研究[
期刊论文] 安全与环境学报--2024, 24(6)李莎莎 崔铁军为修正系统故障演化过程中故障事件发生概率,提出了一种故障事件发生概率修正方法.基于多专家经验融合,对专家给出的不同因素条件下故障事件发生概率的评估值进行修正.方法涉及DS证据论、皮尔逊相关性、信息熵等方法.讨论...参考文献和引证文献
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关键词:安全科学技术基础学科,系统故障演化过程,故障事件发生概率,专家经验融合,修正方法,
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