Title :
New method for spectrum correction of damped free vibration response
Author :
Chen Le-de ; Ding Kang ; Yang Zhi-jian
Author_Institution :
Sch. of Mech. & Automotive Eng., South China Univ. of Technol., Guangzhou, China
Abstract :
This paper presents a spectrum correction method based on complex analytic band-pass filter. This method can improve the precision of spectrum correction of damped free vibration response, and reduce the spectral leakage of negative frequency component caused by FFT. Results of simulations and testing show that the precision of spectrum correction can be rather high when the natural frequency of each modal parameter is far from the others.
Keywords :
acoustic signal processing; band-pass filters; damping; fast Fourier transforms; spectral analysers; vibrations; FFT; analytic band-pass filter; damped free vibration response; multifrequency signal; spectrum correction method; Automation; Band pass filters; Damping; Frequency; Information analysis; Power engineering and energy; Signal analysis; Signal processing; Testing; Time domain analysis;
Conference_Titel :
Information and Automation, 2009. ICIA '09. International Conference on
Conference_Location :
Zhuhai, Macau
Print_ISBN :
978-1-4244-3607-1
Electronic_ISBN :
978-1-4244-3608-8
DOI :
10.1109/ICINFA.2009.5205121
