The Power Law Applied to the Windowed Fourier Transform

Lima, Miguel F. M.; Tenreiro Machado, J. A.

http://hdl.handle.net/10400.22/13609

Use this identifier to reference this record.

Name:	Description:	Size:	Format:
COM_MachadoTenreiro309_2010.pdf		1009.97 KB	Adobe PDF	Download

Send Feedback

Authors

Lima, Miguel F. M.

Tenreiro Machado, J. A.

Abstract(s)

The windowed Fourier transform is one of the most widely used time-frequency representations. In order to use this technique several parameters must be defined according to the signal analyzed. In this paper are studied the effects of the type, the shape, the length and the overlap of the windows. A power law/fractional window that we call fractional is defined and a new method for tuning the window parameters is presented. The study is based on the information theory and is applied to signals captured during the movement of a robotic manipulator. The experimental results demonstrate the applicability and the effectiveness of the proposed approach.