基于相异性表示的民机液压系统健康评估

Health Assessment of Civil Aircraft Hydraulic System Based on Dissimilarity Representation

为了实现对民航飞机液压系统的健康评估,基于相异性表示的方法,利用单类线性规划分类器模型进行健康评估,确定了影响模型评估准确率的参数,定义了健康指数,得到总体测试样本以及非正常样本的评估结果,且与支持向量机超球模型的评估结果进行比较。结果表明,在已选择相应参数的情况下,采用基于相异性表示的单类线性规划分类器模型可以对民机液压系统进行健康评估。

This paper carries out the health assessment of the civil aircraft hydraulic system. Based on the dissimilarity representation, one-class LP classifier is taken for the health assessment, to determine the parameters affecting the accuracy of the model assessment, to define the health index, to make the assessment of the overall test samples and non-normal samples, and to compare the results with the support vector machine hyper-sphere model. The evaluation results show that in the case of the selected appropriate parameters, one- class LP classifier based on the dissimilarity classifier model can assess the health of the civil aircraft hydraulic system, and performs better than the support vector machine hyper-sphere model.