Title :
Study on NTC thermistor characteristic curve fitting methods
Author :
Cong, Yu ; Wang-chao, Zhou ; Bin, Sun ; Hang-xia, Zhou
Author_Institution :
Coll. of Inf. Eng., China Jiliang Univ., Hangzhou, China
Abstract :
Thermistor characteristic equation directly determines the temperature measurement accuracy. Three fitting equation of NTC thermistors and their corresponding mathematic solutions are introduced. An adaptive algorithm based on cross-validation is proposed to determine the degree of chebyshev polynomials equation. The experiment indicates that the method of least squares for Steinhart-Hart equation and chebyshev polynomials equation has higher accuracy, and the equation determined by adaptive algorithm for the chebyshev polynomials method has better performance.
Keywords :
Chebyshev approximation; curve fitting; least squares approximations; temperature measurement; thermistors; Chebyshev polynomials equation; NTC thermistor characteristic; Steinhart-Hart equation; adaptive algorithm; cross-validation; curve fitting methods; mathematic solutions; temperature measurement accuracy; thermistor characteristic equation; Chebyshev approximation; Fitting; Mathematical model; Ocean temperature; Polynomials; Temperature measurement; NTC thermistors; Steinhart-Hart equation; chebyshev polynomials; fitting curve;
Conference_Titel :
Computer Science and Network Technology (ICCSNT), 2011 International Conference on
Conference_Location :
Harbin
Print_ISBN :
978-1-4577-1586-0
DOI :
10.1109/ICCSNT.2011.6182415
