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本文是四篇系列文章中的第一篇。四篇文章分别为1.泰勒展开法;2.多点重合法;3.三个热敏电阻的线性网络;4.参数的细微调整。 在本文中介绍了用泰勒展开法对网络参数、线性近似式、线性偏差和线性范围的计算。对具有0～3个网络参数的线性网络导出了这些参数的解析表达式。对实际计算中遇到的几种情况给出了修正公式。计算了不同B值下的线化范围。对B=3880K的一组实际元件进行了计算,得到0～50℃温区内线性偏差小于±0.2℃
This article is the first of four series. The four articles are respectively 1. Taylor expansion method; 2. Multi-point coincidence method; 3. Three linear networks of thermistors; 4. Fine adjustment of parameters. In this paper, Taylor’s expansion method is introduced to calculate the network parameters, linear approximation, linear deviation and linear range. An analytical expression for these parameters is derived for linear networks with 0-3 network parameters. The actual calculation of several cases encountered in the correction formula is given. The linearization range at different B values was calculated. A set of real components of B = 3880K were calculated, and the linear deviation in the temperature range of 0 ~ 50 ℃ was less than ± 0.2 ℃