The main factors determining the measurement accuracy are respectively discussed based on the analyses of the measurement error of angular displacement.
对角位移干涉测量系统进行了误差分析，讨论了影响角位移测量精度的主要因素。
A method for roll angular error measurement of NC machine tool vertical axis was studied based on straightness measurement using laser interferometers system.
以激光干涉仪直线度误差测量为基础研究了数控机床垂直轴滚转角误差的检测方法。
An eccentricity error mathematic model was built up based on the measurement principle of the optical angular encoder and error analysis.
通过对光栅角编码器测角原理和偏心误差产生原因的分析，建立了偏心误差模型。
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