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J Chin Soc Corr Pro  1988, Vol. 8 Issue (3): 5-181    DOI:
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ELECTRODE IMPEDANCE MEASUREMENT BY FFT TIME DOMAIN METHOD
Wang Jiangtao Zhang Tingfang Gu Haoran(East China Normal University)
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Abstract  An electrode impedance measurement system by time domain method has been set up, it is composed of an APPLE Ⅱ microcomputer and a self-made electrochemical interface. Pseudorandom white noise is adopted as the excitation signal. The signal average technique and FFT algorithm are employed in order to improve the ratio of signal to noise and the rate of transform calculation. The measurement system has been used to determine the impedances of equivalent circuits and real electrochemical systems. The results well agree with those obtained by SOLARTRON 1250 FRA and the data from literature. The problems about the selection of excitation signal, limits of measurement frequency and noise influence have been discussed.
Received:  25 June 1988     
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Wang Jiangtao Zhang Tingfang Gu Haoran(East China Normal University). ELECTRODE IMPEDANCE MEASUREMENT BY FFT TIME DOMAIN METHOD. J Chin Soc Corr Pro, 1988, 8(3): 5-181.

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https://www.jcscp.org/EN/     OR     https://www.jcscp.org/EN/Y1988/V8/I3/5

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