中国航空科学基金(2011ZD54011) 作品数:1 被引量:11 H指数:1 相关作者: 林琳 席剑辉 更多>> 相关机构: 沈阳航空航天大学 更多>> 发文基金: 中国航空科学基金 国家自然科学基金 更多>> 相关领域: 机械工程 更多>>
Improved Confidence Limits of T~2 Statistic for Monitoring Batch Processes Multiway principal component analysis (MPCA) is an effective method for batch processes monitoring and fault d... Liying Jiang, Baojian Xu, Jianhui Xi, Jianguo Cui, Li Fu School of Automation, Shenyang Aerospace University, Shenyang, China 110136文献传递 声发射熵分析刀具磨损故障预测研究 被引量:11 2014年 刀具在加工过程中不断磨损,直接影响构件的加工精度。根据采集的刀具声发射信号,分析声发射序列熵值在不同切削阶段的概率分布特征,建立一种基于刀具磨损状态的重心熵值的阈值检测方法。同时采用最小二乘支持向量机(Least Squares Support Vector Machine,LS-SVM)建立声发射序列的熵值预测模型,结合熵值检测实现刀具磨损状态的高精度监测。仿真结果表明:采用最小二乘支持向量机预测熵值能够达到较高的预测精度;刀具的阈值检测,能够及时发现刀具的磨损故障,提高加工效率;二者结合,能够满足实际生产加工需要。 席剑辉 林琳关键词:刀具 声发射 支持向量机 故障预测 New Fault Diagnosis Method for Rolling Bearing Based on PCA A fault diagnosis approach is proposed for rolling bearing based on the principal component analysis (PCA). Mu... Xi Jianhui Han Yanzhe Su Ronghui文献传递 Multidimensional Feature Extraction Based on Vibration Signals of Rolling Bearings In order to reduce the wrong fault diagnosis probability of rolling bearing using single feature, this paper, ... Jianhui Xi Lin Lin文献传递 Research on Acoustic Emission Source Location Method Based on Cross-Correlation Analysis without Measuring Sonic Speed This paper is aimed at solving the source location problem of acoustic emission(AE). Because the sonic speed w... Jianhui Xi Baofeng Xiao Hongshan Ma Qi Wang文献传递 Multivariate Input Vector Space Reconstruction and its Application This paper was concentrated on the reconstruction of multivariate input vector space. Based on evaluating the ... Xi Jianhui 1 , Zhang Lei 1 , Niu Yanfang 1 , Su Ronghui 2 , Jiang Liying 1 1. School of Automation, Shenyang Aerospace University, Shenyang 110136, China2. AVIC Shenyang Aircraft Corporation, Shenyang 100850, China关键词:FASTICA 文献传递