基于状态熵的制造系统结构脆弱性评估方法

发布时间：2018-04-21 03:26

本文选题：制造系统 + 脆弱性　；参考：《计算机集成制造系统》2017年10期

【摘要】：针对制造系统结构脆弱性难以量化评估的难题,在分析系统结构脆弱性成因的基础上,提出一种基于马尔科夫过程和信息熵原理的制造系统结构脆弱性量化评估方法。通过分析制造单元的各种工作状态,建立了状态转移方程;定义了制造单元临界脆弱性状态,利用信息熵原理计算制造单元的脆弱性,测度其脆弱性程度;通过分析缓冲区的状态,定义了缓冲区脆弱性,分析了缓冲区状态及容量对系统结构脆弱性的影响;通过简化系统状态,定义系统脆弱性的临界状态,基于单元脆弱性和信息熵原理对系统结构脆弱性进行量化评估。利用制造单元的结构脆弱性,判断不同的制造单元在面对风险时潜在威胁性的大小,为系统安全运行和监控提供借鉴。通过混流制造系统结构脆弱性的具体评价表明该方法在量化评估系统脆弱性时具有较好的效果。
[Abstract]:Based on the analysis of the causes of structural vulnerability of manufacturing system, a quantitative method of structural vulnerability assessment of manufacturing system based on Markov process and information entropy principle is proposed. By analyzing the working states of manufacturing cells, the state transfer equation is established, and the critical vulnerability states of manufacturing cells are defined, and the vulnerability of manufacturing cells is calculated by using the principle of information entropy, and the vulnerability degree of manufacturing cells is measured. By analyzing the state of buffer, the vulnerability of buffer is defined, the influence of buffer state and capacity on system structure vulnerability is analyzed, and the critical state of system vulnerability is defined by simplifying system state. Based on the principle of unit vulnerability and information entropy, the system structural vulnerability is evaluated quantitatively. Based on the structural vulnerability of manufacturing cells, the potential threat of different manufacturing units in the face of risks is judged, which provides a reference for the safe operation and monitoring of systems. Through the concrete evaluation of the structural vulnerability of the mixed flow manufacturing system, it is shown that this method is effective in quantifying the vulnerability of the system.
【作者单位】：湖南科技大学机电工程学院;湖南科技大学商学院;
【基金】：国家科技支撑计划资助项目(2012BAF001) 湖南省自然科学基金资助项目(14JJ7050) 湖南省高等学校科学研究项目(13C306) 湖南省高等学校科学研究重点项目(14A046)~~
【分类号】：TH16

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