三坐標測量儀用于碰撞試驗中車身測量結果的不確定度

呂恒緒 龍海靖 李充
中國汽車技術研究中心,天津300162
摘　要:介紹了三坐標測量儀在汽車碰撞試驗中對車身測量時測量結果的不確定度評定,根據測量不確定度的理論與方差合成定理,提出了三坐標測量儀測量結果的不確定度數學模型,分析了不確定度的來源及對測量結果的影響,最后給出了測量結果的不確定度。[著者文摘]


Uncertainty of the Result Measured by Coordinate Measuring Machine （CMM） in Collision TestLV Heng- xu, LONG Hai- jing, LI Chong China Automotive Technology ＆ Research Center, Tianjin 300162, ChinaAbstract:Introducing the evaluation about the uncertainty of the result measured by the coordinate measuring machine （CMM） in collision test. According to the uncertainty of measurement theory and the variance composition theorem, the mathematical model of the uncertainty of the result measured by CMM is built, and the sources of the uncertainty and the influence on the measuring result are analyzed, finally, the uncertainty of measuring result is obtained.[著者文摘]

Key words:uncertainty ; coordinate measuring machine （ CMM ） ; collision test