关键词: 大尺寸测量, 不确定度分析, 蒙特卡罗仿真方法, 激光跟踪仪

Abstract: To evaluate large-scale measurement uncertainty, Monte Carlo simulation method was introduced especially for multi-stations fusion measurement. Repeated probability sample of each sensor unit was accomplished with this method and the measurement sample results were created and the coordinates measurement uncertainty were obtained by statistics samples so as to show 3D scatter of points through computer visualization. By affection experiment of different sample sizes on operation time and accuracy, sample size was confirmed as 500 times. Comparison results of uncertainty among Monte Carlo method, statistic and analytical method had come perfect, in which the maximum deviation was 2.7μm compared to analytical method. Experiment result showed that Monte Carlo simulation method could be used to evaluate the large-scale measurement instruments and uncertainty of multi-stations fusion measurement and the fusion precision was superior to each local precision.

Key words: large-scale measurement, uncertainty analysis, Monte Carlo simulation method, laser tracker, fusion measurement