Frequency characteristic and its application of the cell resistance in aluminum electrolysis

Author

Shuiping, Zeng ; Lei, Ding

Author_Institution

Autom. Dept., North China Univ. of Technol., Beijing, China

fYear

2012

fDate

14-17 July 2012

Firstpage

165

Lastpage

168

Abstract

The cell resistance signals from different cell status were analyzed by both the Fast Fourier Transformation (FFT) and power spectrum density (PSD) estimate based on AR model in order to obtain the frequency characteristics of the signals. By comparing the frequency characteristic, the source of the frequency was indicated. Results showed the main frequency domain of the cell resistance is below 0.1Hz and there was a stable low frequency signal caused by the variation of alumina content and the regulation of polar distance in the electrolysis operation; When the fluid aluminum fluctuated quickly, there was an obvious wave crest in higher frequency; when anode is abnormal, there were two obvious wave crests in higher frequency.

Keywords

alumina; aluminium; cells (electric); electrolysis; fast Fourier transforms; frequency-domain analysis; signal processing; AR model; FFT estimation; PSD estimation; abnormal anode; alumina content variation; aluminum electrolysis; cell resistance application; cell resistance signals; cell status; fast Fourier transformation; fluid aluminum fluctuation; frequency characteristics; frequency source; polar distance regulation; power spectrum density estimation; Aluminum; Anodes; Electrochemical processes; Fluctuations; Frequency domain analysis; Noise; Resistance; aluminum electrolysis; cell resistance; frequency;

fLanguage

English

Publisher

ieee

Conference_Titel

Computer Science & Education (ICCSE), 2012 7th International Conference on

Conference_Location

Melbourne, VIC

Print_ISBN

978-1-4673-0241-8

Type

conf

DOI

10.1109/ICCSE.2012.6295050

Filename

6295050