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Wavelets in Engineering Applications Luo Gaoy

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Luo Gaoyong 著

    

发表于2021-07-25

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出版社: 科学出版社
ISBN:9787030410092
商品编码:29310917645
包装:平装
出版时间:2014-07-01

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基本信息

书名:Wavelets in Engineering Applications

定价:78.00元

作者:Luo Gaoyong

出版社:科学出版社

出版日期:2014-07-01

ISBN:9787030410092

字数:

页码:

版次:5

装帧:平装

开本:32开

商品重量:0.4kg

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内容提要


目录


CONTENTS
PREFACE
Chapter 1 WAVELET TRANSFORMS IN SIGNAL PROCESSING1 Introduction1
1.1 The continuous wavelet transform2
1.2 The discrete wavelet transform3
1.3
1.4 The heisenberg uncertainty principle and time-frequency depositions5
1.5 Multi-resolution analysis5
1.6 Some important properties of wavelets6
1.6.1 Compact support 6
Rational coe.cients 6
1.6.2
1.6.3 Symmetry 6
Smoothness 6
1.6.4
1.6.5 Number of vanishing moments 7
1.6.6 Analytic expression 7
1.7 Current fast WT algorithms7
1.7.1 Orthogonal wavelets 7
1.7.2 Semiorthogonal (nonorthogonal) wavelets 8
1.7.3 Biorthogonal wavelets 8
1.7.4 Wavelet packets 9
Harmonic wavelets9
1.7.5
Discussion9
1.8 REFERENCES10
Chapter 2 SYSTEM MODELLING12
Introduction12
2.1
2.2 The underlying principle of Fourier harmonic analysis13
2.3 Autocorrelationwaveletalgorithm14
2.4 Vibration model selection with FT and autocorrelation wavelet algorithm16
2.5 Coe.cients estimation with least-squares algorithm17
Results and discussion19
2.6
2.7 Conditionmonitoringofbearing23
2.8 Concluding remarks28
REFERENCES28
Chapter 3 CONDITION MONITORING 30
3.1 Wavelet analysis30
3.2 Filterdesignandfastcontinuouswaveletalgorithm32
3.3 Small defect detection of bearing37
3.3.1 Speci.c frequency ranges monitoring 39
3.3.2 Signi.cant and natural frequencies monitoring 39
3.4 Concluding remarks41
REFERENCES42
Chapter 4 PROCESS CONTROL43
Introduction43
4.1
4.2 Vibration and surface quality44
4.2.1 Theoretical calculation of surface quality 44
4.2.2 Vibration during machining 46
4.3 Adaptive spline wavelet algorithm 47
4.3.1 Battle-Lemari′e wavelet .lter design 47
4.3.2 Arbitrary .ne time-scale representation 49
4.3.3 Adaptive frequency resolution deposition 51
4.4 Methodologyofexperiment53
Results and discussions55
4.5
4.5.1 Experimental results 55
Discussions 63
4.5.2
4.6 Concluding remarks64
REFERENCES65
Chapter 5 VIBRATION ANALYSIS 67
Introduction67
5.1
5.2 Machining process vibration68
5.3 Wavelet algorithm with cross-correlation69
5.4 Experimentalset-up71
5.5 Experimental results73
Discussion77
5.6
5.7 Concluding remarks79
REFERENCES80
Chapter 6 AUDIO CODING 82
Introduction82
6.1
6.2 DSP Implantation of lifting wavelet transform 84
6.3 Embedded coding and error resilience88
6.4 Results of experiment and simulation91
Conclusions93
6.5 REFERENCES94
Chapter 7 IMAGE QUALITY MEASUREMENT 96
Introduction96
7.1
7.2 Waveletanalysisandtheliftingscheme98
7.3 Image quality evaluation102
7.3.1 Image noise analysis 104
7.3.2 Image sharpness analysis105
7.3.3 Image brightness analysis 106
7.3.4 Image contrast analysis 106
7.3.5 Image MTF analysis 107
7.3.6 Image quality quanti.cation and classi.cation 107
7.3.7 Optimisation of weighting coe.cients 108
7.4 Experimental results and discussions110
Conclusions118
7.5 REFERENCES119
Chapter 8 IMAGE DENOISING 121
Introduction121
8.1
8.2 Fast lifting wavelet analysis123
8.3 Noise reduction with wavelet thresholding and derivative .ltering127 General noise reduction 127
8.3.1 Fine noise reduction 128
8.3.2
8.4 Experimental results and discussions131
Conclusions135
8.5 REFERENCES135
Chapter 9 WIRELESS POSITIONING 138
Introduction138
9.1
9.2 Wavelet notch .lter design140
9.3 System model and narrowband interference detection145
9.4 Experimental results and discussions147
Conclusions155
9.5
REFERENCES155
Chapter 10 POWER LINE MUNICATIONS157
Introduction157
10.1
10.2 Multicarrier spread spectrum system162
10.3 Carrier frequency error estimation and pensation169
10.4 Time-frequency analysis of noise170
10.5 Noise detection and .ltering175
10.6 Experimental results and discussions178
Conclusions183
10.7 REFERENCES184

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