同位素测厚仪的合金曲线标定方法的研究

A New Method of Calibrating Alloy Curve of Isotope Thickness Gauge

同位素测厚仪在冶金、造纸等行业有着广泛的应用。传统的测厚仪合金曲线标定多采用直接多项式拟合方法,测量精度较差。提出了一种在没有精确测量数学模型的条件下,采用分段多项式拟合和补偿基准曲线相结合的方法对同位素测厚仪进行合金曲线的标定。经过工业现场的应用表明,这种方法可以在减少标定点的基础上,确保曲线的拟合精度,保证测量精度。

Isotope thickness gauge is widely applied to many fields, such as metallurgy and paper making. Polynomial curvefitting is a mainly conventional method of calibrating alloy curve, but is has a little poor measure accuracy. Without a accuracy mathematical model. It proposes a method that subsection polynomial curvefitting is combined with compensating base curving to calibrate alloy curve. The result of the industrial application shows that the method may ensure fitting precision and measure accuracy based on reducing the number of standard plates.