A robust triaxial localization method of AE source using refraction path  

作　　者：Yichao Rui Jie Chen Jiongkun Chen Jiadong Qiu Zilong Zhou Wenzhong Wang Jinyang Fan 

机构地区：[1]State Key Laboratory of Coal Mine Disaster Dynamics and Control,Chongqing University,Chongqing 400044,China [2]School of Resources and Safety Engineering,Chongqing University,Chongqing 400044,China [3]School of Resources Environment and Safety Engineering,University of South China,Hengyang 421001,China [4]School of Resources and Safety Engineering,Central South University,Changsha 410083,China [5]Coal Geological Exploration Institute of Gansu,Lanzhou 730030,China

出　　处：《International Journal of Mining Science and Technology》2024年第4期521-530,共10页矿业科学技术学报（英文版）

基　　金：the National Natural Science Foundation of China (Nos.52304123 and 52104077);the Postdoctoral Fellowship Program of CPSF (No.GZB20230914);the China Postdoctoral Science Foundation (No.2023M730412);the National Key Research and Development Program for Young Scientists (No.2021YFC2900400)。

摘　　要：Acoustic emission(AE)localization algorithms based on homogeneous media or single-velocity are less accurate when applied to the triaxial localization experiments.To the end,a robust triaxial localization method of AE source using refraction path is proposed.Firstly,the control equation of the refraction path is established according to the sensor coordinates and arrival times.Secondly,considering the influence of time-difference-of-arrival(TDOA)errors,the residual of the governing equation is calculated to estimate the equation weight.Thirdly,the refraction points in different directions are solved using Snell’s law and orthogonal constraints.Finally,the source coordinates are iteratively solved by weighted correction terms.The feasibility and accuracy of the proposed method are verified by pencil-lead breaking experiments.The simulation results show that the new method is almost unaffected by the refraction ratio,and always holds more stable and accurate positioning performance than the traditional method under different ratios and scales of TDOA outliers.

关 键 词：Acoustic emission(AE) Source localization Robust method Refraction paths Weight estimations 

分 类 号：TD315[矿业工程—矿井建设]