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

作　　者：杨建华[1] 刘文琦[1] 郎华威[1] 周海鹏[1] 

机构地区：[1]大连理工大学,大连116023

出　　处：《仪器仪表学报》2004年第z1期725-726,共2页Chinese Journal of Scientific Instrument

摘　　要：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.

关 键 词：同位素测厚仪 曲线标定 补偿曲线 

分 类 号：TH7-55[机械工程—仪器科学与技术]