摘要
提出了用最小二乘法拟合压力传感器输入输出关系二次曲线的方法.文中对这两种方法作了比较,并用实例说明二次多项式拟合结果可大大提高测量的精度;其次,采用矩阵运算及MATLAB编程可提高计算效率.
In this paper, the secondary order curve of the relationship in the input and output of pressure sensors decided by the least square method is presented. The accuracy of the secondary order curve is better than that of the straight line from the instance in two methods. The rate of calculation can be improved by the matrix operation and MATI.AB programming.
出处
《中国计量学院学报》
2005年第3期185-187,共3页
Journal of China Jiliang University
关键词
最小二乘法
正规方程
二次曲线
标准差
least square method
normal equation
secondary order curve
standard deviation
