Oversampled frame algorithms for real-time wavelet and wavelet packet frame decompositions and reconstructions

1994 ◽  
Vol 33 (7) ◽  
pp. 2108
Author(s):  
Charles K. Chui
Keyword(s):  
Real Time ◽  
Wavelet Packet ◽  
Frame Decompositions

Real-time localization of micro-damage in concrete beams using DIC technology and wavelet packet analysis

2021 ◽  
pp. 104198
Author(s):  
Kaiyang Zhou ◽  
Dong Lei ◽  
Jintao He ◽  
Pei Zhang ◽  
Pengxiang Bai ◽  
...  
Keyword(s):  
Real Time ◽  
Concrete Beams ◽  
Wavelet Packet ◽  
Wavelet Packet Analysis ◽  
Damage In Concrete

Real-time FPGA implementation of recursive wavelet packet transform

2012 ◽  
Author(s):  
Vanishree Gopalakrishna ◽  
Nasser Kehtarnavaz ◽  
Chandrasekhar Patlolla ◽  
Matthias F. Carlsohn
Keyword(s):  
Real Time ◽  
Wavelet Packet ◽  
Wavelet Packet Transform ◽  
Fpga Implementation

Vibration Carpet Value in Classification and Evaluation of the Motor Condition

2011 ◽  
Vol 137 ◽  
pp. 445-449
Author(s):  
Yin An Yin ◽  
Xiong Hu
Keyword(s):  
Real Time ◽  
Pitch Angle ◽  
Wavelet Packet ◽  
Monitoring And Evaluation ◽  
Real Time Monitoring ◽  
The Real ◽  
Container Crane ◽  
Analysis Technique ◽  
Motor Condition ◽  
Quayside Container Crane

According to the quayside container crane, the pitch angle of the front crossbeam only can be used to classify the states of the whole crane into operating and non-operating. The Vibration Carpet Value (VCV）is presented in this paper. By means of VCV, the motor states including working and non-working can be correctly classified. Based on the classified result, by the methodology of Wavelet Packet Quantization Analysis Technique based on EMD, the real-time monitoring and evaluation of the motor condition are more correct and effective.

scholarly journals Real-Time Monitoring of Timber-Surface Crack Repair Using Piezoelectric Ceramics

2021 ◽  
Vol 2021 ◽  
pp. 1-15
Author(s):  
Huien Meng ◽  
Wenwei Yang ◽  
Xia Yang
Keyword(s):  
Real Time ◽  
Lead Zirconate Titanate ◽  
Surface Crack ◽  
Wavelet Packet ◽  
Damage Index ◽  
Piezoelectric Ceramics ◽  
Strength Development ◽  
Active Sensing ◽  
Surface Cracks ◽  
Crack Repair

Real-time assessment of timber-surface crack repair is crucial to the stability and safety of timber structures. Epoxy resin was used to repair timber cracks, and the active sensing technique using piezoelectric ceramics was applied to monitor the repair process of timber surface cracks in real time. Sixteen wood samples were designed for axial compression tests and active monitoring tests. A pair of lead zirconate titanate patches was pasted on the surface of the timber specimens as actuators and sensors for signal transmission and reception, through wavelet packet analysis, the variations in the signal amplitude, and wavelet coefficients. The relationship between the wavelet packet energy of the monitoring signal and the ultimate bearing capacity of the specimens at different periods after grouting was established. Based on the root-mean-square deviation, the damage index, DI, was introduced to evaluate the repair degree of timber surface cracks quantitatively. The results showed that the active sensing method can evaluate the strength development in timber-surface crack repair in real time.

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