基于交互作用矩阵多维云模型的飞机重着陆风险评估方法研究

Research on risk assessment method of aircraft heavy landing based on interaction matrix-multidimensional cloud model

针对飞机重着陆风险具有的系统性、复杂性、多因素影响等特征,从系统角度入手,提出一种能反映因素因素、因素系统间交互作用的模型—交互作用矩阵。采取多维云模型对其编码进行改进,可有效弱化交互作用矩阵的主观性;选取接地速度偏差、接地仰角偏差、接地垂直加速度和接地距离偏差作为重着陆风险的影响因素,以系统的角度确定因素重要度;结合每个风险因素以多维云理论生成5朵四维风险等级云模型,以软件程序实现实例例证,与实际风险等级、组合赋权云、证据云评估结果保持一致,证明所提方法的合理有效,为降低着陆阶段风险提供参考。

Aiming at the systemicity,complexity and multi-factor influence of the aircraft’s heavy landing risk,this paper starts from the system perspective and proposes a model that can reflect the interaction between factors-factors and factors-systems—interaction matrix.Using multi-dimensional clouds to improve its coding,it can effectively weaken the subjectivity of the interaction matrix.Then,ground speed deviation,ground elevation deviation,ground vertical acceleration and ground distance deviation are selected as the influencing factors of the heavy landing risk determining the importance of the factors based on the system angle.Then,this paper combines each risk factor with multi-dimensional cloud theory to generate five four-dimensional risk grade cloud models and realizes examples with software programs.It is consistent with the actual risk level,combined weighting cloud and evidence-cloud assessment results which proves that the proposed method is reasonable and effective and provides a reference for reducing risks in the landing stage.