资源简介

可调Q因子小波变换,用在故障诊断中,程序中包含了原始TQWT工具箱和轴承振动信号信号的谱包络的求取等,最新的应用成果

资源截图

代码片段和文件信息

function [V0 V1] = afb(X N0 N1)
% [V0 V1] = afb(X N0 N1)
% afb: analysis filter bank
%
% Reference: ‘Wavelet Transform with Tunable Q-Factor‘
% http://taco.poly.edu/selesi/TQWT/
% Ivan Selesnick
% selesi@poly.edu
% Polytechnic Institute of NYU

% November 2010

N = length(X);

P = (N-N1)/2;
T = (N0+N1-N)/2 - 1;
S = (N-N0)/2;

% transition-band function
v = (1:T)/(T+1)*pi;
trans = (1+cos(v)) .* sqrt(2-cos(v))/2;

% Add 1 to indices because Matlab indexing starts at 1 (not 0)

% low-pass subband
V0 = nan(1N0);
V0(0+1) = X(0+1);                          % dc term
V0((1:P)+1) = X((1:P)+1);                  % pass-band (pos freq)
V0(P+(1:T)+1) = X(P+(1:T)+1).*trans;       % trans-band (pos freq)
V0(N0/2+1) = 0;                            % Nyquist freq
V0(N0-P-(1:T)+1) = X(N-P-(1:T)+1).*

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     文件       21508  2011-02-23 15:21  tqwt_matlab_toolbox\.DS_Store
     文件        1355  2011-01-05 09:33  tqwt_matlab_toolbox\afb.m
     文件        4715  2014-08-21 15:22  tqwt_matlab_toolbox\bearmain.asv
     文件        4689  2014-08-21 16:05  tqwt_matlab_toolbox\bearmain.m
     文件         133  2014-04-08 20:57  tqwt_matlab_toolbox\calshang.asv
     文件         199  2014-04-08 21:19  tqwt_matlab_toolbox\calshang.m
     文件         820  2014-08-22 08:43  tqwt_matlab_toolbox\chongji.asv
     文件         814  2014-08-22 08:46  tqwt_matlab_toolbox\chongji.m
     文件         814  2014-08-22 08:57  tqwt_matlab_toolbox\chongjiKurt.m
     文件        1775  2011-02-18 14:37  tqwt_matlab_toolbox\ComputeWavelets.m
     文件         208  2014-04-17 09:44  tqwt_matlab_toolbox\computeWaveletsmain.m
     文件        1391  2011-01-12 10:21  tqwt_matlab_toolbox\demo1.m
     文件        1419  2011-02-16 17:40  tqwt_matlab_toolbox\demo1_radix2.m
     文件         480  2014-06-26 11:51  tqwt_matlab_toolbox\huabaol.m
     文件         612  2014-06-26 11:44  tqwt_matlab_toolbox\huabaolexample.asv
     文件         570  2014-06-26 14:17  tqwt_matlab_toolbox\huabaolexample.m
     文件        1575  2014-06-26 11:35  tqwt_matlab_toolbox\huafft.m
     文件         633  2014-06-26 11:42  tqwt_matlab_toolbox\hua_fft-hua_baol_example.m
     文件        1699  2014-05-06 09:23  tqwt_matlab_toolbox\hua_fft.asv
     文件         497  2011-01-04 22:16  tqwt_matlab_toolbox\itqwt.m
     文件         790  2011-01-04 22:17  tqwt_matlab_toolbox\itqwt_radix2.m
     文件          39  2014-04-22 18:55  tqwt_matlab_toolbox\kurt.asv
     文件         392  2014-08-21 09:20  tqwt_matlab_toolbox\kurt.m
     文件         451  2014-05-03 09:59  tqwt_matlab_toolbox\kurtf.asv
     文件         451  2014-05-03 10:00  tqwt_matlab_toolbox\kurtf.m
     文件         868  2011-01-05 09:33  tqwt_matlab_toolbox\lps.m
     文件         284  2014-04-06 10:42  tqwt_matlab_toolbox\main.asv
     文件         507  2014-04-06 10:49  tqwt_matlab_toolbox\main.m
     文件        1090  2014-04-17 10:28  tqwt_matlab_toolbox\mydwt.m
     文件        6355  2014-08-21 10:11  tqwt_matlab_toolbox\mydwtmain.asv
     文件        6355  2014-08-21 10:11  tqwt_matlab_toolbox\mydwtmain.m
............此处省略145个文件信息

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