| 电涡流传感器及求特性曲线拟合方程的新方法 |
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| 引用本文： | 刘兆琦,杨建忠. 电涡流传感器及求特性曲线拟合方程的新方法[J]. 西安石油大学学报(自然科学版), 1998, 0(3) |
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| 作者姓名： | 刘兆琦 杨建忠 |
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| 作者单位： | 西安石油学院电子工程及仪器(刘兆琦)，中原油田炼化总公司(杨建忠) |
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| 摘 要： | 介绍了用途广泛的电涡流传感器的工作原理，输出特征以及建立特性曲线拟合方程式的新方法——在最小二乘法的基础上结合０．６１８优选法进一步使拟合方程式中常数更加合理．用这种方法可以求得最佳拟合直线方程和最小的非线性误差，其值比最小二乘法求得的非线性误差更小．此法适用于各种类型的线性传感器或可以通过适当的变量代换把变量之间的非线性关系化为线性关系的传感器或测量系统．
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| 关 键 词： | 传感器，优选法，典型曲线拟合，方法／［电涡流］ |
Vortex Flow Transducer and a New Method Getting Optimum Fitting Characteristic Curve |
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| Abstract: | The working principle and the output performance of vortex flow transducers are introduced. A new method getting their fitting characteristic curve is put forward. The method combines least square method with 0.618 optimum seeking method. The best linear fitting curve and the least non linear error can be obtained by this method, and the non linear error is less than that obtained by least square method. The method is suitable for all kinds of linear transducers and measuring systems and non linear transducers and measuring systems which can be transformed into linear ones by variable displacement. |
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| Keywords: | transducer optimum seeking method typical curve fitting method/[vortex flow] |
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