铂电阻温度传感器非线性校正的新方法

New Approaches to Non-Linearity Compensation of Platinum Resistor in Temperature Measurement

根据正反馈原理 ,本文提出了铂电阻非线性校正基于级数展开和基于准相对误差最小的两种新方法 ,给出了参数设计的解析表达式。设计及实际应用表明 ,这些方法简单、实用、有效 。

Based on the principle of positive feedback, two new approaches to non-linearity compensation for platinum resistor in temperature measurement, which are called the series expansion-based approach and the minimum pseudo relative error-based approach respectively, are put forward, and analytical expressions of optimal parameters are also given in this paper. It has been shown in practical applications that the methods proposed in the paper not only are correct, practical and precise, but also make it convenient for platinum resistor to be applied to measurement and control systems.