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一、引言若通过一定的仪器(如圆度仪)或采用一定的测试方法(如误差分离技术)获得了被测工件截面的轮廓信号r(一般只能获得相对变化值),再加上基圆半径r_o(一般取工件名义圆半径),则依据
I. INTRODUCTION If the contour signal r of the cross-section of the tested workpiece is obtained through certain instruments (such as a roundness meter) or using certain testing methods (such as error separation technique) (generally only the relative change value will be obtained) Circle radius r_o (generally take the nominal radius of the workpiece), then based on