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《Journal of Vibration and Shock》 2007-01
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APPROXIMATE COMPUTATION OF BILINEAR TIME-FREQUENCY TRANSFORMATION WITH APPLICATION

Fan Yongsheng,Zheng Gangtie(School of Astronautics,Beijing University of Aeronautics and Astronautics,Beijing 100083)  
Bilinear time-frequency transformation has become an important processing tool for non-stationary signal.But large amount of computation and occupying big memory make it hard to real-timely implement.According to the principle of kernel function spectral decomposition,the authors express the discrete real kernel as a symmetric matrix,and indicate the discrete bilinear time-frequency transformation as a weighted sum of discrete spectrograms with eigen-decomposition of symmetric matrices.Then the bilinear transform can be fast cornputed approximately with the partial sum of spectrograms.The numerical simulation and signal processing of gearbox early fault vibration show that the algorithm has a smaller memory cost and a faster speed than traditional ones.
【CateGory Index】: TN911
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【Citations】
Chinese Journal Full-text Database 2 Hits
1 CHEN Shao-hua, XIANG Jin-lin(College of Marine Engineering, Northwestern Polytechntcal University, Xi'an 710072, China);A Modified Time Averaging Method in Weak Signal Detection[J];Journal of Detection & Control;2003-04
2 Ma Ruiheng Wang Xinqing (Engineering Institute of Engineering Corps.PLA Univ.of Sci & Tech,Nanjing 210007);MECHANICAL FAULT DIAGNOSIS BASED ON A NEW TIME-FREQUENCY DISTRIBUTION[J];Journal of Vibration and Shock;2003-03
【Co-citations】
Chinese Journal Full-text Database 10 Hits
1 WU Xiao\|hai, YIN Li and HONG Xian\|long(Department of Computer Science and Technology, Tsinghua University, Beijing\ 100084, China)Received 1 November 1998, revised manuscript received 29 January 1999;Power/Ground Network Solver Based on Incomplete Cholesky Decomposition Conjugate Gradient *[J];CHINESE JOURNAL OF SEMICONDUCTORS;2000-03
2 WANG Jia-feng (Institute of Electronic Engineering, China Academic of Engineering Physics, Mianyang 621900, China);Time Integrating Detection of Weak Periodic Signal[J];Ordnance Industry Automation;2007-09
3 LUO\ Wuan (School of Mathematical Sciences,Peking University,Beijing,100871);A Sufficient and Necessary Condition for the Solvability of General Total Least Squares Problem[J];ACTA SCICENTIARUM NATURALUM UNIVERSITIS PEKINESIS;2000-01
4 ZUO Jun(School of Applied Sciences,Beijing Information Science and Technology University,Beijing 100192,China);Effects of the function interval on the Ill-condition of the best square approach polynomial[J];Journal of Beijing Information Science & Technology University;2010-04
5 Si Deyi Le Qiang Shen Shituan (Beijing University of Aeronautics and Astronautics,Dept. of Electronic Engineering);Method to Improve Performance of Estimation of DOA Using Toeplitz Characteristic[J];JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND ASTRONAUTICS;1998-03
6 Liu Changhe Liu Shixiang Shou Yuting (Dept of Basic Sciences, Beijing 100044);Comparison between Projection Methods and Jacobi Iterations for System of Linear Equations[J];Journal of Beijing Institute of Civil Engineering and Architecture;2003-04
7 Liu Changhe Liu Shixiang(Dept. of Basic Scineces, Beijing 100044);Parametric Methods for Some Special System of Linear Algebraic Equations[J];Journal of Beijing Institute of Civil Engineering and Architecture;2004-01
8 Liu Changhe 1 (1.Dept. of Basic Sciences,Beijing 100044) Wang Yuanlun 2 (2. Department of Information and Mathematics,Mianyang Normal College, Mianyang 621000);Method of Interpolation for the Numerical Solution of Quasi-Tridiagonal System of Linear Equations[J];Journal of Beijing Institute of Civil Engineering and Architecture;2004-02
9 Liu Changhe, Liu Shixiang(Dept. of Basic Sciences, Beijing 100044);Triangular Decomposition of Vandermonde Matrix[J];Journal of Beijing Institute of Civil Engineering and Architecture;2005-01
10 Liu Changhe~1, Wang Yuanlun~2, Liu Shixiang~1(1.Dept.of Basic Sciences,Beijing,100044;2.Dept.of Information and Mathematics,Mianyang Normal College,Mianyan,621000);Find the Inverse Matrix of Tridiagonal Matrix by Solving Systems of Linear Algebraic Equations[J];Journal of Beijing Institute of Civil Engineering and Architecture;2005-03
China Proceedings of conference Full-text Database 6 Hits
1 Yu Hongying Pan Hongxia North University of China,Tai Yuan,Shan Xi,030051,China;Research of Gear Vibration Feature and Condition Monitoring[A];[C];2005
2 Fan Yongsheng Yu Hongying Department of Computer Science and Technology,North University of China,TaiYuan ShanXi China,030051;Research of Vibration Signal Detect Technique and Its Application in Fault Diagnosis[A];[C];2005
3 ZHOU Jun,LIU Dagang,ZENG Yawen,LIU Shenggang (School of Physical Electronics,University of Electronic Science and Technology of China, Chengdu 610054);Algorithms and Applications of Eigen-mode Solution in Microwave Resonant Cavities[A];[C];2007
4 Zhang Huanjiong (Hangzhou university of electrical science and technology;hangzhou,310018);A New Decorrelating Method of MUD[A];[C];2008
5 JING Yuefeng~(1)),LIU Jun~(2)),GUAN Yonghong~(3)) (Institute of Fluid Physics,CAEP,P.O.Box 919-105 Mianyang 621900,China);An Improved Constrained Conjugate Gradient Reconstruction for Flash Radiographic Image[A];[C];2010
6 CAO Guang-xi,SHI An-na (Business School, Hohai Unversity, Nanjing 210098 ,China);Empirical Research on Multifractals of Returns in Shanghai Stock Market: A New MFDFA Method[A];[C];2006
【Secondary Citations】
Chinese Journal Full-text Database 2 Hits
1 MA Yan,SHI Yao wu,KANG Xiao tao(Information Science and Engineering Institute,Jilin University,Changchun,Jilin 130025,China);Harmonic Retrieval in Colored noises:Cross-Spectral SVD-LS Approach with Cleared False Peaks of Spectral Estimation[J];Acta Electronica Sinica;2002-01
2 Zhang Ziyu 1 Chen Jin 2 Shi Xizhi 2 Wu Zhenyang 1 ( 1Radio Engineering Department, Southeast University Nanjing, 210096) ( 2The State Key Lab. of Vibration, Shock & Noise, Shanghai Jiaotong University Shanghai,;Radial Gaussian Kernel Time-Frequency Distribution and Its Application to Machine Fault Diagnosis[J];Journal of Vibration Engineering;2001-01
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