Uncertainty Evaluation Study of CMM Dynamic Measurement Based on Quasi Monte Carlo Method
In a contact measurement process, the coordinate measuring machine (CMM) probe will bring dynamic measurement error, therefore, dynamic calibration of the probe tip effective diameter should to be done at different probing speeds, and calibration uncertainty should to be given. There are some problems, slow convergence and unstable, using Monte Carlo (MC) method in uncertainty In this paper, Quasi Monte Carlo (QMC) method is presented in the probe tip effective diametet uncertainty evaluation. At a certain positioning speed and distance approximation, probe tip effective diameter experimental tests are done with changing probing speeds. MC and QMC methods are used on uncertainty evaluation respectively, and the results are compared and analyzed. The simulation shows that QMC can be used on dynamic uncertainty evaluation of CMM probe tip. Compared with MC, QMC obtains a better stability and precision in small sample size and gains hieher comDutine sneed in laree sarrrole size.
CMM measurement uncertainty dynamic measurement Quasi Monte Carlo Monte Carlo
ZHONG Weihong MA Xiushui LI Yingdao LI Yuan
Ningbo Institute of Technology, Zhejiang University, Ningbo, China 315100
国际会议
湘潭
英文
366-371
2011-07-19（万方平台首次上网日期，不代表论文的发表时间）