基于MD-CUSUM和TD-SVR的滚动轴承健康状态预测

被引:14
作者
夏均忠
吕麒鹏
陈成法
刘鲲鹏
郑建波
机构
[1] 陆军军事交通学院军用车辆实验实习中心
关键词
滚动轴承; 健康指标; 累积马氏距离; 时滞性支持向量回归; 等距特征映射;
D O I
10.13465/j.cnki.jvs.2018.19.014
中图分类号
TH133.33 [滚动轴承];
学科分类号
082805 [农业机械化与装备工程];
摘要
故障特征提取是轴承健康状态描述的关键,然而当前常用方法提取的特征往往维数较高或信息缺失,无法单调性地反应轴承健康状态,且预测结果不能有效反应轴承退化趋势。应用累积马氏距离(MD-CUSUM)实现特征降维并得到健康指标(HI),能够在低维层面上单调性地反应轴承健康状态;构建时滞性支持向量回归(TD-SVR)模型,提高滚动轴承健康状态预测精度。通过试验数据分析对比了MD-CUSUM与等距特征映射(ISOMAP)的优劣,结果表明MDCUSUM和TD-SVR相结合在轴承健康状态预测方面具有更好地效果。
引用
收藏
页码:83 / 88
页数:6
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