数控轴线单向位置偏差测量不确定度的序列评定  

Sequence Evaluation of Uncertainty in Measuring Unidirectional Positional Deviation of Numerically Controller Axes

作　　者：李义军[1] 尼娜 

机构地区：[1]内蒙古工业大学机械学院,内蒙古呼和浩特010051 [2]内蒙古机电职业技术学院电气工程系,内蒙古呼和浩特010052

出　　处：《中国制造业信息化（学术版）》2007年第7期72-74,共3页

摘　　要：提出了用激光干涉仪测量数控轴线单向位置偏差,建立序列测量模型并导出测量序列任一截口的合成标准不确定度(uci),实验结果证明温度偏离标准温度引起的不确定度对uci的贡献率超过了80%,而只有uci能够体现这个贡献率。因此评定数控轴线单向位置偏差的检测精度科学合理的方法是采用合成不确定度,以取代传统的实验标准差。In order to evaluate the uncertainty in the measurement sequence for unidirectional positional deviation of numerically controlled axes, it builds a sequence measurement model and presents the itch state- combined standard uncertainty（UCI） with laser interferometer. The experiment result shows that the contribution rate generated at the uncertainty with the deviation of temperature from the standard temperature contributes to UCI is larger than 80%. Only UCI can represent the contribution rate. Therefore; it is scientific and reasonable that the measurement precision of unidirectional positional deviation of numerically controlled axes can be evaluated by UCI instead of the experiment standard deviation.

关 键 词：数控轴线 单向位置偏差 任一截口合成标准不确定度 

分 类 号：TH124[机械工程—机械设计及理论]