Method of Normal Equations for Reducing Cross-Sensitivity of Multi-Sensors

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Method of Normal Equations for Reducing Cross-Sensitivity of Multi-Sensors

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- Method of Normal Equations for Reducing Cross-Sensitivity of Multi-Sensors
- Vol. 43, Issue 6, Pages: 57-61(2009)
- 作者机构：
  
  1. 西安交通大学电气工程学院,西安,710049
  2. 西北核技术研究所,西安,710024
- 作者简介：
- 基金信息：
- DOI：
  CLC： TP212.6
- Online First：10 June 2009，
  
  Published：2009
- 稿件说明：
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Method of Normal Equations for Reducing Cross-Sensitivity of Multi-Sensors[J]. 2009, 43(6): 57-61.
DOI：

Method of Normal Equations for Reducing Cross-Sensitivity of Multi-Sensors[J]. 2009, 43(6): 57-61. DOI：

摘要

针对用线性回归分析法降低多传感器交叉敏感中存在的问题

利用最小二乘法和矩阵计算理论

提出用法方程组的方法求解多传感器逆模型的拟合曲面方程的系数.该方法的优点是简单、快捷

且易于编程实现多元高次拟合曲面方程的系数.实验结果表明

用法方程组的方法也可以明显地改善多传感器的交叉敏感问题.融合后压力传感器的温度灵敏度系数α

降低近两个数量级

电流影响系数α

降低一个数量级以上

而零位温度系数α

也下降了1/3

且拟合曲面方程次数越高

改善的效果越好.

Abstract

For the problem in reducing cross-sensitivity of multi-sensors by linear regression

a method of normal equations based on the theory of least squares and matrix computations is proposed to solve the coefficient of fitting curved surface equation in the inverse model of multi-sensors

which is simple in programming to evaluate the coefficient of multivariable and higher order equation. The experiment shows that it can obviously reduce the multi-sensor cross-sensitivity

and improve nearly two orders of magnitude for the temperature coefficient of pressure sensor sensitivity

more than one order of magnitude or the electricity coefficient of sensor sensitivity

and three times for the temperature coefficient of zero position

especially for higher orders of fitting curves surface equations; algorithm.

关键词

Keywords

references

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