原子能科学技术2013，Vol.47Issue(3)：468-471,4.DOI:10.7538/yzk.2013.47.03.0468
Levenberg-Marquardt算法在应力测量中子衍射峰位中的应用
Application of Levenberg-Marquardt Algorithm in Analysis of Neutron Diffraction Peak Position for Stress Measurement
摘要
Abstract
In order to realize precise and quick data processing for the neutron residual stress diffractometer at China Advanced Research Reactor (CARR), the Levenberg-Marquardt (LM) algorithm was applied to analysis of neutron diffraction peak position for stress measurement. The object function for peak fitting, the flow chart of the diffraction peak position calculation based on the LM algorithm and the corresponding Labview program were described in detail. Then, a series of diffraction profiles were fitted by the program, which shows that the program could precisely and quickly tell peak position. So the program could be applied to the precise and batch data analysis of neutron residual stress diffractometer.关键词
中子衍射峰位/峰形拟合/Levenberg-Marquardt算法/中子残余应力谱仪Key words
neutron diffraction peak position/ profile fitting/ Levenberg-Marquardt algorithm/ neutron residual stress diffractometer分类
数理科学引用本文复制引用
刘晓龙,陈东风,韩松柏,李峻宏,高建波,刘蕴韬..Levenberg-Marquardt算法在应力测量中子衍射峰位中的应用[J].原子能科学技术,2013,47(3):468-471,4.基金项目
973计划资助项目(2010CB833101) （2010CB833101）
