中子谱仪样品台几何误差建模和灵敏度分析
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摘要
介绍了中子衍射残余应力测试谱仪样品台的结构和基于标准探针的定位测量方法;利用多体运动学和齐次变换矩阵建立了基于标准探针定位测量方法的样品台定位误差模型;最后分别对模型中涉及的42个误差分量进行了定位误差的灵敏度分析。分析结果对中子衍射残余应力测试谱仪样品台的精度设计具有参考作用。
The structure of a spectrometer sample table testing residual stress by neutron diffraction and positioning measurement method were introduced herein based on standard probe.The positioning error model was established based on the standard probe positioning measurement scheme by using the multi-body kinematics and homogeneous transformation matrix.Finally,position error sensitivity analysis for 42 error components of the model was carried out.The results of the analysis provide a reference for precision design of the spectrometer sample tables testing residual stress by neutron diffraction.
The structure of a spectrometer sample table testing residual stress by neutron diffraction and positioning measurement method were introduced herein based on standard probe.The positioning error model was established based on the standard probe positioning measurement scheme by using the multi-body kinematics and homogeneous transformation matrix.Finally,position error sensitivity analysis for 42 error components of the model was carried out.The results of the analysis provide a reference for precision design of the spectrometer sample tables testing residual stress by neutron diffraction.
引文
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[2]奂永慧,徐平光,殷匠.角度分散法中子衍射应力测试技术的应用[J].理化检验(物理分册),2012(4):235-240.HUAN Yonghui,XU Pingguang,YIN Jiang.Application of Stress Measurement Technique by Angle Dispersive Neutron Diffraction[J].Physical Testing and Chemical Analysis Part A(Physical Testing),2012(4):235-240.
[3]ZHU S W,DING G F,QIN S F,et al.Integrated Geometric Error Modeling,Identification and Compensation of CNC Machine Tools[J].International Journal of Machine Tools&Manufacture,2012,52:24-49.
[4]杨强,孙志礼,闫明,等.一种新型并联机构位姿误差建模及灵敏度分析[J].中国机械工程,2008,19(14):1649-1653.YANG Qiang,SUN Zhili,YAN Ming,et al.Error Modeling and Sensitivity Analysis of a Novel Parallel Mechanism[J].China Mechanical Engineering,2008,19(14):1649-1653.
[5]赵强,阎绍泽.基于敏感度的运动模拟台误差综合[J].中国机械工程,2006,17(5):478-481.ZHAO Qiang,YAN Shaoze.Error Synthesis for Six Degrees of Freedom Motion Simulation Platform Based on Sensitivity[J].China Mechanical Engineering,2006,17(5):478-481.
[6]POTT A,KECSKEMETHY A,HILLER M.ASimplified Force-based Method for the Linearization and Sensitivity Analysis of Complex Manipulation System[J].Mechanism and Machine Theory,2007,42:1445-1461.
[7]CHEN J S.Computer-aided Accuracy Enhancement Formulti-axis CNC Machine Tool[J].International Journal of Machine Tools and Manufacturing,1999,35(4):593-605.