系统仿真学报 ›› 2018, Vol. 30 ›› Issue (7): 2729-2735.doi: 10.16182/j.issn1004731x.joss.201807037

• 仿真应用工程 • 上一篇    下一篇

基于边界网格梯度的机体损伤划分评价方法

蔡舒妤, 师利中   

  1. 中国民航大学 航空工程学院,天津 300300
  • 收稿日期:2017-07-10 出版日期:2018-07-10 发布日期:2019-01-08
  • 作者简介:蔡舒妤(1985-),女,山东济南,硕士,讲师,研究方向为三维模型重构、飞行器故障智能诊断;师利中(1984-),男,河南新乡,硕士,讲师,研究方向为飞行器故障智能诊断、飞机性能数据分析。
  • 基金资助:
    航空科学基金(20151067003)

Airframe Damage Region Division Evaluation Method Based on Boundary Grid Gradient

Cai Shuyu, Shi Lizhong   

  1. College of Aeronautical Engineering, Civil Aviation University of China, Tianjin 300300, China
  • Received:2017-07-10 Online:2018-07-10 Published:2019-01-08

摘要: 为准确高效的为机体损伤区域划分方法的选择和评价提供决策支持,分析了机体损伤区域的特点,建立了损伤图像划分评价指标——边界网格梯度。并引入熵权法,融合边界网格梯度指标,对TOPSIS方法进行优化改进,建立了完整的机体损伤区域划分评价体系。选用不同灰度熵阈值的飞机机体损伤区域划分图像进行验证。结果表明:该方法有效的表征了边界对损伤邻接区域的划分情况,避免了不同划分图像中边界变化对评价结果的不利影响,评价结果符合视觉感知。

关键词: 机体损伤区域划分, 损伤划分评价方法, 边界网格梯度, 熵权法, 理想解

Abstract: In order to provide decision support for efficiently choosing and evaluating airframe damage region division methods, the characteristic of airframe damage region was analyzed, evaluating indicator of damage image division-boundary grid gradient was established. By introducing entropy method, combining with indicator of boundary grid gradient, the optimization of TOPSIS was presented, and the evaluation system of airframe damage region division was completely established. Airframe damage region division evaluation experiments were performed by different gray level entropy threshold of damage division image. Experimental results showed that, the proposed method efficiently represented division status of damage adjacency region, and avoided the adverse effect of boundary changing in different division image on evaluation. The evaluation result corresponded well with visual perception.

Key words: airframe damage region division, damage division evaluation method, boundary grid gradient, entropy method, ideal solution

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