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Fault Diagnosis of Rolling Bearing Based on Adaptive Block Forward and Backward Stagewise Orthogonal Matching Pursuit Algorithm
2020
Journal of Mechanical Engineering
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摘要:针对滚动轴承故障信号分块压缩感知过程中,因分块之间的稀疏度差异较大以及重构支撑集构造不合理,致使信号重 构精度较低, 影响信号整体重构效果的问题, 提出基于自适应分块前向后向分段正交匹配追踪算法(Adaptive block forward and backward stagewise orthogonal matching pursuit,Adaptive Block-FBStOMP)。 ...
In order to improve the signal reconstruction results, adaptive block forward and backward stagewise orthogonal matching pursuit (Adaptive Block-FBStOMP) algorithm based on adaptive block method is proposed ...
为验证 FBStOMP 算法的重构性能，分别利用
压缩采样匹配追踪(Compressive sampling matching
pursuit，CoSaMP)、子空间追踪(Subspace pursuit，
SP)、正交匹配追踪(Orthogonal matching pursuit，
OMP)、StOMP、FBStOMP 五种算法对长度为 256
的高斯随机信号进行重构仿真，测量矩阵为 ...
doi:10.3901/jme.2020.09.091
fatcat:gy73wtwevfhnbk4thpnugz4qp4
An Improved Gradient Projection Method for Sparse Signal Reconstruction
一种改进的稀疏信号重构的梯度投影算法
2017
Computer Science and Application
一种改进的稀疏信号重构的梯度投影算法
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A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2018; you can also visit the original URL.
The file type is application/pdf.
Numerical results show that the running time of the new algorithm is less than GPSR-BB for some randomly generated test problems. ...
In the new algorithm, a predicted point was first generated by traditional gradient projection and then a new iteration point was obtained with B-B method according to the predicted point. ...
贪婪追踪算法包括匹配 追踪算法(Matching Pursuit, MP) [13] 、正交匹配追踪算法(Orthogonal Matching Pursuit, OMP) [14] 和稀疏度 自适应的匹配追踪算法(Sparsity Adaptive Matching Pursuit, SAMP) [15] 等；凸优化算法包括基追踪算法 (Basis Pursuit, BP) [16] 、迭代阈值算法 ...
doi:10.12677/csa.2017.79095
fatcat:kn4s6emhezeghpwuarzvvxfjqy