Separation and optimization of posture errors in optical aspheric coordinate measurement
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Separation and optimization of posture errors in optical aspheric coordinate measurement
Optics and Precision EngineeringVol. 15, Issue 8, Pages: 1229-1234(2007)
作者机构:
国防科技大学 机电工程与自动化学院,湖南 长沙,410073
作者简介:
基金信息:
DOI:
CLC:TH703
Received:06 March 2007,
Revised:29 May 2007,
Published Online:30 August 2007,
Published:30 August 2007
稿件说明:
移动端阅览
JIA Li-de, ZHENG Zi-wen, LI Sheng-yi, et al. Separation and optimization of posture errors in optical aspheric coordinate measurement[J]. Optics and precision engineering, 2007, 15(8): 1229-1234.
DOI:
JIA Li-de, ZHENG Zi-wen, LI Sheng-yi, et al. Separation and optimization of posture errors in optical aspheric coordinate measurement[J]. Optics and precision engineering, 2007, 15(8): 1229-1234.DOI:
Separation and optimization of posture errors in optical aspheric coordinate measurement
Based on the development of a new special-purpose optical aspheric coordinate measurement machine
the effect of the relative posture errors between the measurement system and the workpiece in 6 degrees was researched
and its mathematical model was established. With a model parameter estimation method
the least square (LS) optimal model was established based on the measuring data and the nominal surface
and then the LS estimations of the posture errors were obtained to correct the measurement result. The experimental results indicate that the method can eliminate the effect of posture errors and increase the reliability and accuracy of the measuring data
which ensures the measurement system in a repeatability of 0.3 μm and an accuracy of 0.5 μm.