Time-Frequency Analysis in Vehicle Dynamics and Medical Engineering

• Autorzy: Reicke L. , Kroger M.
• Konferencja: Polish-German Workshop on Dynamical Problems in Mechanical Systems (9 ; 4-10.09.2005 ; Paszkówka, Poland)
• Języki publikacji: EN

Abstrakty

EN

This contribution deals with the priciples of linear time-frequency analysis. Two commonly used methods, the short-time Fourier transform and the wavelet transform, based on a harmonic wavelet, are described. The short-time Fourier transform is characterised by a uniform time-frequency resolution, whereas wavelet transforms exhibit non-uniform resolution in the time-frequency domain. The effect of uniform and non-uniform resolution respectively on the time-frequency analysis is shown by means of artifical test signals. A well adapted short-time Fourier transform is well suited for vibration analysis. This is illustrated by two applications in mechanical and medical engineering.

Słowa kluczowe

EN

time-frequency analysis; vehicle dynamics; medical engineering; Fourier transform; wavelet transform

• Wydawca: Oficyna Wydawnicza Politechniki Warszawskiej
• Czasopismo: Machine Dynamics Problems
• Rocznik: 2006
• Tom: Vol. 30, No. 1
• Strony: 61--72
• Opis fizyczny: Bibliogr. 3 poz., wykr.

Twórcy

autor

Reicke L.

autor

Kroger M.

• Institute of Dynamics and Vibrations. University of Hannover,

Bibliografia

• Qian, S., 2002, Introduction to time-frequency and wavelet transforms, Prentice Hall, Upper Saddle River, 47-49.
• Mertins, A., 1999, Signal analysis: wavelets, filter banks, time-frequency transforms and applications, John Wiley & Sons, Chichester, 206-212.
• Newland, D. E., 1993, An introduction to random vibrations, spectral and wavelet analysis, Longman Scientific & Technical, Essex, 359-369.