本文關(guān)鍵詞： 三坐標(biāo)測量機 誤差橢圓 直徑 不確定度 蒙特卡羅方法　出處：《上海交通大學(xué)學(xué)報》2017年04期 　論文類型：期刊論文

【摘要】：利用三坐標(biāo)測量機(CMM)測量圓幾何特征的功能,建立了基于誤差橢圓理論與蒙特卡羅方法的測量不確定度評定模型.以誤差橢圓表征采樣點的不確定度,結(jié)合蒙特卡羅方法仿真所得較少的測量樣本數(shù)據(jù)快速得到了最小二乘擬合條件下的圓直徑測量的不確定度.同時,與實驗測量和文獻(xiàn)公式計算的結(jié)果進(jìn)行對比,驗證了其有效性.結(jié)果表明,所建立的模型能夠準(zhǔn)確評定圓直徑測量的不確定度.
[Abstract]:Using the function of CMM (CMM) to measure the geometric characteristics of a circle, an evaluation model of measurement uncertainty based on error ellipse theory and Monte Carlo method is established. The uncertainty of sampling points is represented by error ellipse. The uncertainty of circle diameter measurement under the condition of least square fitting is quickly obtained by using the less sample data obtained by Monte Carlo simulation. At the same time, it is compared with the results of experimental measurement and literature formula calculation. The results show that the model can accurately evaluate the uncertainty of circle diameter measurement.
【作者單位】： 上海交通大學(xué)機械與動力工程學(xué)院;
【基金】：國家數(shù)控機床科技重大專項(2015ZX04005001)資助
【分類號】：TH721;TG81
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本文編號：1537778