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基于粗糙集和D-S证据理论的设备技术状态评估 被引量:25

Technical condition evaluation for devices based on rough set theory and D-S evidence theory
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摘要 针对设备技术状态评估中存在着不确定性,建立了基于粗糙集理论和D-S证据理论的设备技术状态评估模型,以提高评估的准确度,降低不确定性。首先利用粗糙集理论的知识约简功能来优化设备技术状态评估指标,其次采用D-S证据理论来组合优化过的指标,最后采用基于基本可信度分配的决策来获得设备的技术状态类别。以汽轮鼓风机为研究对象,详细描述了基于粗糙集理论和D-S证据理论的设备技术状态评估方法,并进行实例计算。实例表明采用粗糙集理论,优化了评估指标,减少了数据收集;采用D-S证据理论,进一步综合各指标,并能计算出评估结果可能存在的不确定性量。 On the basis of uncertainty in technical condition evaluation of devices, a kind of technical condition evaluation method for devices based on rough set theory and Dempster-Shafter (D-S) evidence theory is presented to enhance the nicety and reduce the uncertainty. Firstly, indexes of the device are optimized by rough set theory; secondly, the indexes optimized are combined by D-S evidence theory; lastly, the technical condition of the device can be gained by the decision-making method based on the basic probability number. The method is applied to the Steamer-fan. The instance shows that the application of rough set theory optimized the indexes, so data collection is reduced. The application of D-S evidence theory integrates the indexes and computed the value of the uncertainty.
出处 《系统工程与电子技术》 EI CSCD 北大核心 2008年第1期112-115,共4页 Systems Engineering and Electronics
关键词 技术状态评估 粗糙集 D-S证据理论 technical condition evaluation rough set theory Dempster-Shafter evidence theory
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参考文献6

  • 1Pawlak Z. Rough sets[J]. Int. J. Inf. Comput. Sci., 1982 (11) :341 - 356.
  • 2Zhai Lian-Yin, Khoo Li-Pheng, Fok Sai-Cheong. Feature ex traction using rough set theory and genetic algorithms-an appli cation for the simplification of product quality evaluation [J] Computers & Industrial Engineering, 2002(43) : 661 - 676.
  • 3Francis E H Tay, Shen Lixiang. Economic and financial prediction using rough sets model[J]. European Journal of Operational Research, 2002(141) : 641 -659.
  • 4Francis E H Taya, Shen Lixiang. Fault diagnosis based on Rough Set theory[J]. Engineering Applications of Artificial Intelligence, 2003(16) : 39 - 43.
  • 5Frank Witlox, Hans Tindemans. The application of rough sets analysis in activity-based modeling opportunities and constraints [J]. Expert Systems with Applications, 2004(27) : 585 - 592.
  • 6Sharer G. A mathematical theory of evidence[M]. Princeton University Press, Princeton, 1976.

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