中文名称：零值误差 英文名称：zero error 定义：测得值为零值时的基值测量误差。
针对这一问题，本文研究了零件加工误差对动模板合模位置的影响，得出了零件加工误差的许用值范围，并计算了由于销轴摩擦力对合模力放大比的影响关系式。
Aiming at these problems, this paper studies how the original error affects the accuracy, works out its allowable values, and finds out the equation between friction of pins and clamping force.
分析表明：零件直径方向的尺寸差值的绝对值随着对刀高度误差的增大而增大；
Analysis shows that the absolute values of difference workpiece diameter will increase with the increases of tool setting error.
零误差实验可以更有效地观察粗差在经过抗差估计以后的分布情况，再将估计值与真值比较，从而较客观地对各种抗差估计方法做出评价。
Zero-error experiment can observe the distribution of gross error after robust estimation, then compare the estimation value and real value, so we can evaluate externally all kinds of robust method.
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