【作者】 赵伟； 谭彩虹；

【Author】 Zhao Wei Tan Caihong (Shenyang Institute of Automation,Chinese Academy of Sciences,Shengyang 110016,China)

【机构】 中科院沈阳自动化研究所第三研究室；

【摘要】 在 EPA 温度变送器中采用了铂热电阻作为前端传感器的输入,并以一元三次方程和一元四次方程的算术解法为基础,得出了实用的解析式,详细叙述了当时解析式的推导过程并用实际数据进行了验证,同时使用 Matlab 对误差进行了相应的分析。与其它算法相比,该方法具有无模型误差,计算时间固定的优点,可推广到类似的应用领域中。更多还原

【Abstract】 In the research of EPA temperature transmitter,platinum temperature-resistance is used as for- ward transducer input,based on the arithmetical computation of cubic equation with one known and quartic equation with one known;the particular process is given when temperature is between-200 and 0 centi- grade and the whole formula of is shown too.The validity is tested by actual data,and the calculation error is analyzed using Matlab software.Compared with other arithmetic,this method is better because it has no model error and the time for calculating is fixed.It can also be applied in similar fields if necessary.更多还原