A new algorithm of time domain synchronous averaging analysis

Author

Yimin Shao ; Shemin Wang ; Ou, Jiafu ; Xiaojun Zhou ; Zhou, Benxue ; Wang, Hongjiang

Author_Institution

Chongqing Univ., Chongqing

fYear

2007

fDate

17-20 Oct. 2007

Firstpage

2528

Lastpage

2531

Abstract

The speed of rotary machine varies with the fluctuation of voltage and load. And the method of period-based time domain synchronous averaging can not process the case of fluctuation of rotation speed because of the phase errors accumulation from the errors of round-off and frequency estimation. In order to solve the problem, a modified method of period-based time domain synchronous averaging is proposed in this paper. The idea is to get the frequency of per rotation by using FFT-FS (fast Fourier transform-Fourier series). This method can improve the effectiveness of the phase error accumulation. Simulation and experiment results have shown that the new algorithm is excellent on extracting the periodic of signal from speed fluctuation signal.

Keywords

Fourier series; electric machines; fast Fourier transforms; frequency estimation; time-domain analysis; FFT-FS; frequency estimation; phase error accumulation; rotary machine; rotation speed fluctuation; round-off estimation; time domain synchronous averaging analysis; Algorithm design and analysis; Automatic voltage control; Automation; Control systems; Data mining; Discrete Fourier transforms; Fluctuations; Frequency estimation; Signal processing; Time domain analysis; Spectrum; Speed fluctuation; Time domain synchronous averaging;

fLanguage

English

Publisher

ieee

Conference_Titel

Control, Automation and Systems, 2007. ICCAS '07. International Conference on

Conference_Location

Seoul

Print_ISBN

978-89-950038-6-2

Electronic_ISBN

978-89-950038-6-2

Type

conf

DOI

10.1109/ICCAS.2007.4406790

Filename

4406790