基于Fisher判别的接触式轮廓仪自动标注分析

Automatic Marking Analysis of Contact Profilometer Based on Fisher Discriminant

针对接触式轮廓仪的自动标注问题,运用Fisher判别法、一元回归分析等方法建立了被测工件在水平状态和倾斜状态下的轮廓线中槽口宽度、圆心间距离、斜线与直线夹角、圆半径等参数值的数学模型,根据平面向量旋转方法对倾斜状态下被测工件轮廓线进行校对和修正,并利用配对T检验法分析2种测量状态下被测工件各项参数计算值之间的差异,完成了不同测量状态下接触式轮廓仪自动标注分析的研究过程。

In view of the problem of automatic marking of contact profilometer,the mathematical models of notch width,distance between centers of circles,angle between oblique line and straight line,radius of circle and other parameters in the contour line of measured workpiece in horizontal and inclined state are established by using Fisher discriminant method and one variable regression analysis.The contour line of workpiece under inclined state is calibrated according to plane vector rotation method.In addition,the paired T-test method is used to analyze the difference between the calculated values of various parameters of the workpiece in the two measurement conditions,The research process of automatic annotation and analysis of contact profilometer in different measurement states is completed.