传感技术学报2016，Vol.29Issue(11)：1705-1710,6.DOI:10.3969/j.issn.1004-1699.2016.11.013
全相位与Geiger算法的岩石声发射源定位方法
Rock Acoustic Emission Source Localization Method Based on All Phase and Geiger Algorithm
摘要
Abstract
Geiger localization algorithm is widely used in the analysis of rock localization,however,it is very strict on the initial value,if the initial value is not properly selected,it is difficult to enter the convergence range. In order to improve the positioning precision and reduce the number of iterations,rock acoustic emission source localization method based on all phase and Geiger algorithm is put forward. First of all,the experiment was carried out on the granite(50 mm×100 mm×50 mm). Secondly,making full use of the advantage of apfft phase invariance to analyse the lead signal,and the delay time is obtained by the phase difference method,at the same time,the initial value of the Geiger iteration is obtained by the inversion of the acoustic emission source. In the end,combining least square method and Geiger algorithm to obtain optimum solution. Experimental simulation results are shown:Comparing the positioning results of the United States PCI-2 type acoustic emission instrument,the average error decreased by about 5 mm. This method can effectively solve the problem of selecting the initial value of Geiger,so that it can quickly enter the convergence range,improving the convergence speed and positioning accuracy.关键词
信号分析/声发射源定位/全相位相位差/Geiger/最小二乘法Key words
signal analysis/acoustic emission source location/all-phase phase difference/Geiger/least square method分类
建筑与水利引用本文复制引用
黄晓红,孙国庆,张凯月..全相位与Geiger算法的岩石声发射源定位方法[J].传感技术学报,2016,29(11):1705-1710,6.基金项目
国家自然科学基金面上项目（51174071；51374088）；河北省钢铁联合基金项目（E2016209357）；华北理工大学培育基金项目 （）
