激光三角法测距的误差因素分析
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摘要
在激光三角法测距中,被测物体表面特征、整个测量装置以及环境对测量精度都会产生一定的影响。文章从物面倾斜角度、被测物体表面曲率、被测物体表面颜色、被测物体表面粗糙度与光泽、CCD分辨率、光学系统相差、测量环境等方面对测量误差的产生进行了理论分析,重点从物面倾斜方面分析误差产生的原因,推算出光能质心光线的角位置、会聚光斑在CCD上的光能质心位置、测量误差大小的计算公式,在此基础上针对各种因素给出误差补偿方法。
In the laser triangulation measurement,surface characteristics of the object being measured,measurement devices and the environment will have a certain impact on the measurement accuracy. This paper theoretically analyzes reason of the measurement error from the inclined angle,surface curvature of measured object,the surface color of measured object,the roughness and gloss of measured surface,CCD resolution,optical system aberrations,measurement environment,and it focuses on the object plane inclination,calculate the calculation formula on the angular position of the light center,the position of the light center in the CCD and measurement error,on this basis,the error compensation method is given for various factors.
In the laser triangulation measurement,surface characteristics of the object being measured,measurement devices and the environment will have a certain impact on the measurement accuracy. This paper theoretically analyzes reason of the measurement error from the inclined angle,surface curvature of measured object,the surface color of measured object,the roughness and gloss of measured surface,CCD resolution,optical system aberrations,measurement environment,and it focuses on the object plane inclination,calculate the calculation formula on the angular position of the light center,the position of the light center in the CCD and measurement error,on this basis,the error compensation method is given for various factors.
引文
[1]于培章.激光三角法位移检测误差分析及改进[D].长春理工大学,2013.
[2]李有堂,贾冰.影响待测物面测量误差的因素及补偿[J].机械设计与制造,2010,02:208-210.
[3]曹伟.复合材料高精度视觉测厚与不稳定因素的分析与处理[D].天津大学,2009.
[4]杜家胜.大尺寸热态环件激光测量技术研究[D].合肥工业大学,2012.
[5]于伟莉.激光光斑中心位置计算方法的研究[D].长春理工大学,2008.
[6]张孝林,户艳,杨晓龙.逆向工程中数据测量技术及测量误差研究[J].机床与液压,2011,16:90-93+96.
[7]汪琛,赵斌.单镜头激光三角法薄板厚度测量研究[J].激光技术,2013,01:6-10.
[8]罗立强.激光三角测量装置的优化研究[D].哈尔滨工业大学,2008.
[9]定翔,李飞,洪宝玉.三维轮廓扫描法测量透镜曲率半径的实验研究[J].应用光学,2012,04:761-765.
[10]贾冰.影响待测物面测量误差的因素及补偿方法[D].兰州理工大学,2009.
[11]黄睿.激光位移传感器及输出特性的研究[D].北京交通大学,2010.
[12]吴剑锋,王文,陈子辰.激光三角法测量误差分析与精度提高研究[J].机电工程,2003,05:89-91.
[13]陈龙.薄壁型钢几何缺陷测量系统研制及试验研究[D].南京理工大学,2013.
[2]李有堂,贾冰.影响待测物面测量误差的因素及补偿[J].机械设计与制造,2010,02:208-210.
[3]曹伟.复合材料高精度视觉测厚与不稳定因素的分析与处理[D].天津大学,2009.
[4]杜家胜.大尺寸热态环件激光测量技术研究[D].合肥工业大学,2012.
[5]于伟莉.激光光斑中心位置计算方法的研究[D].长春理工大学,2008.
[6]张孝林,户艳,杨晓龙.逆向工程中数据测量技术及测量误差研究[J].机床与液压,2011,16:90-93+96.
[7]汪琛,赵斌.单镜头激光三角法薄板厚度测量研究[J].激光技术,2013,01:6-10.
[8]罗立强.激光三角测量装置的优化研究[D].哈尔滨工业大学,2008.
[9]定翔,李飞,洪宝玉.三维轮廓扫描法测量透镜曲率半径的实验研究[J].应用光学,2012,04:761-765.
[10]贾冰.影响待测物面测量误差的因素及补偿方法[D].兰州理工大学,2009.
[11]黄睿.激光位移传感器及输出特性的研究[D].北京交通大学,2010.
[12]吴剑锋,王文,陈子辰.激光三角法测量误差分析与精度提高研究[J].机电工程,2003,05:89-91.
[13]陈龙.薄壁型钢几何缺陷测量系统研制及试验研究[D].南京理工大学,2013.