... effective than its original scalogram for the characteristic analysis of the rubbing AE. 07 10 2007 19 05 2008 22 10 2008 abrasion acoustic emission acoustic signal processing elastic waves rotors structural acoustics time-frequency analysis vibrations modal acoustic...

...-frequency analysis vibrations hybrid intelligent method salient features multiple classifier combination compound fault diagnosis Fault diagnosis of machinery is in essence a kind of pattern recognition problems and it consists of three steps: data acquisition, feature extraction...

... ,” Mech. Syst. Signal Process. 0888-3270 , 11 ( 4 ), pp. 561 – 576 . Lee , S. K. , and White , P. R. , 1997 , “ High-Order Time-Frequency Analysis and Its Application to Fault Detection in Rotating Machinery ,” Mech. Syst. Signal Process. 0888-3270 , 11 ( 4 ), pp. 637 – 650...

...Bao Liu; Sherman Riemenschneider; Zuowei Shen This paper presents a fast adaptive time–frequency analysis method for dealing with the signals consisting of stationary components and transients, which are encountered very often in practice. It is developed based on the short-time Fourier transform...

...Yuji Ohue, Associate Professor,; Akira Yoshida, Professor Mem. ASME, The aim of this study is to propose a new evaluation method of gear dynamics using the continuous and discrete wavelet transforms. The wavelet transform (WT) is a method for the time-frequency analysis of signals. In order...

...Lili Wang; Jinghui Zhang; Chao Wang; Shiyue Hu In the previous paper, a class of nonlinear system is mapped to a so-called skeleton linear model (SLM) based on the joint time-frequency analysis method. Behavior of the nonlinear system may be indicated quantitatively by the variance...

...Lili Wang; Jinghui Zhang; Chao Wang; Shiyue Hu The joint time-frequency analysis method is adopted to study the nonlinear behavior varying with the instantaneous response for a class of S.D.O.F nonlinear system. A time-frequency masking operator, together with the conception of effective time...