非迭代的波速未知声发射定位算法  

A Non-iterative AE Source Localization Algorithm with Unknown Velocity

作　　者：方卫红[1] 刘丽川[2] 杨继平[2] 税爱社[1] 

机构地区：[1]后勤工程学院后勤信息与军事物流工程系,重庆401311 [2]后勤工程学院军事供油工程系,重庆401311

出　　处：《后勤工程学院学报》2016年第6期1-7,共7页Journal of Logistical Engineering University

摘　　要：为了提高声发射源定位精度,提出了一种速度未知条件下的定位新算法。该定位算法基于INGLADA算法,先将传感器组成的非线性定位方程组变换成一个线性方程组,再用一元三次方程直接计算出速度,并获得定位结果。然后,利用Matlab工具进行二维算法的有效性测试和健壮性测试,结果表明该算法可以有效解决平面定位问题,算法的精度与时间差的精度以及传感器的布置方式有关。最后,进行了油罐底板断铅测试,证明了该算法可以有效定位,且精度较高。The objective of this paper is to develop a localization algorithm that can work with unknown velocity to improvethe precision of localization. A new localization algorithm is proposed based on the INGLADA algorithm. Firstly, the nonlinear equa-tions are transferred to linear equations, then the velocity is worked out by a cubic equation, and the acoustic emission source loca-tion is obtained in succession. Secondly, 2D localization experimental results show the validity and robustness of this algorithm withthe aid of Matlab tools, and reveal that the precision of the algorithm is determined by the time difference and the placement of sen-sors. Finally, an acoustic emission localization test of pencil-lead-break on tank floor is also done accurately by our algorithm.

关 键 词：声发射 定位 速度未知 时差 一元三次方程 条件数 

分 类 号：TG115.28[金属学及工艺—物理冶金]