小波变换在人-板系统动测方法中的应用

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Application of Wavelet Transformation to Dynamic Measurement of Men-Board System

WANG Jun1 WANG Feng－quan1, Li Zhi－jun1，ZHOU Xing－de2

1. Institute of Civil Engineering, Southeast Universit, Nanjing 210096, China;
2. Institute of Civil Engineering, Hohai University, Nanjing 210098, Chian

Received:2004-10-17 Revised:2005-06-02 Online:2006-01-31 Published:2006-01-31

Abstract

Abstract: In order to acquire the starting condition of a springboard diver from the response curve, discrete wavelet transform is used to decompose the signal. A correlation algorithm based on time-frequency analysis is improved to estimate only the low frequency relative coefficients of similar signals which contains most energy. The moment of take-off can be caught, and the jumping acceleration and velocity are obtained. Moreover, shock spectrum of the board is figured out to obtain optimum pressing condition. Experimental results indicate that the method can be used to evaluate the jumping skill, which is useful in the training.

Key words:

wavelet, correlation, springboard diving, jumping, shock spectrum

WANG Jun WANG Feng－quan;Li Zhi－jun;ZHOU Xing－de. Application of Wavelet Transformation to Dynamic Measurement of Men-Board System
[J]. Journal of Applied Sciences.

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Application of Wavelet Transformation to Dynamic Measurement of Men-Board System

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