Abstract
A conductance and capacitance test system was designed in this paper. AD5933 a new chip for impedance testing was used in it. By designing the test system, and testing the impedance of a model, which is a resistor in parallel with a capacitor, under different frequency (range from1000Hz to 100kHz). The information of impedance, real part, and imaginary part of the model under the frequency points were get. Based on this, the internal relations between conductance, capacitance, impedance, real part and imaginary part were carefully analyzed, using the soft-sensing method established the capacitance support vector machine (SVM) regression model on MATLAB. The regression model is the relation between resistance, impedance and capacitance. The test results showed that the test relative error is small in the capacitance range (0.1 pf~33 pf) and the conductance range (9.05*10-3s~3.8*10-5s), the biggest, smallest and average test error of capacitance are -2.9%, 0.2%, 1.27% respectively. The study showed that using AD5933 and the soft-sensing method to realize the multi-parameter test is feasible.
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Cui, C., Wu, H., Zuo, Y. (2010). A Study on Using AD5933 to Realize Soft-Sensing Measurement of Conductance and Capacitance. In: Li, D., Zhao, C. (eds) Computer and Computing Technologies in Agriculture III. CCTA 2009. IFIP Advances in Information and Communication Technology, vol 317. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-12220-0_69
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DOI: https://doi.org/10.1007/978-3-642-12220-0_69
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-12219-4
Online ISBN: 978-3-642-12220-0
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