Modeling of Thermometric Characteristics of Thermistors

Abstract

To model the thermometric characteristic of thermistors, it is proposed to utilize minimax (Chebyshev) approximation by rational expression. Rational models of thermometric characteristic of thermistors provide higher accuracy in reproducing temperature compared to polynomial models. The advantage of rational models is illustrated based on real calibration results of the thermometric characteristic of a thermistor. Rational models of thermometric characteristic of thermistors also ensure satisfactory temporal stability in temperature reproduction.