基于聚类分析的旋转机械声发射碰摩定位算法

详细信息

Acoustic emission rub-impact location algorithm for rotating machinery based on cluster analysis

School of Information Science and Engineering, Shenyang University of Technology, Shenyang 110870, China

摘要: 旋转机械的特性决定了其在运行中可能会出现碰摩故障并且不易停机检修,所以旋转机械的碰摩定位是一个亟需解决的问题。针对此问题,提出了利用声发射信号特性的参数定位方法,并采用改进的聚类算法优化定位结果。该方法能够在旋转机械运行时进行检测,并且能够准确对碰摩源进行定位。试验结果表明,与时差定位算法相比,提出的方法可以更有效地分离出碰摩源,而且经过改进后的聚类算法运行速度更快。
- 声发射 /
- 定位 /
- 碰摩 /
- 聚类分析
Abstract: Because the characteristics of rotating machinery determine that it may encounter rub-impact faults during operation and is not easy to stop for maintenance, the rub-impact positioning of rotating machinery is an urgent problem to be solved. To solve this problem, this paper proposed a parameter location method based on acoustic emission signal characteristics, and used an improved clustering algorithm to optimize the location results. This method can monitor the running of rotating machinery and accurately locate the source of rub-impact. The experimental results showed that compared with the TDOA location algorithm, the proposed method can more effectively separate the collision sources, and the improved clustering algorithm ran faster.
- acoustic emission /
- positioning /
- rub-impact /
- cluster analysis

[1]	MA C,MA Y J,HE T A,et al.Positioning rub of the aero-engine based on acoustic emission and Mathematical Morphology in noise background[J].Procedia Engineering,2011,17:654-659.
[2]	张程杰,郭涛,梁颖,等.基于线性震源定位算法的声发射损伤定位技术[J].无损检测,2021,43(12):41-44.
[3]	GODIN N,HUGUET S,GAERTNER R.Integration of the Kohonen's self-organising map and k-means algorithm for the segmentation of the AE data collected during tensile tests on cross-ply composites[J].NDT & E International,2005,38(4):299-309.
[4]	刘增华,董拓灿,彭秋玲,等.碳纤维复合材料板的声发射源定位[J].无损检测,2016,38(10):48-52.
[5]	JOHNSON M.Classification of AE transients based on numerical simulations of composite laminates[J].NDT & E International,2003,36(5):319-329.
[6]	褚福磊,王庆禹,卢文秀.用声发射技术与小波包分解确定转子系统的碰摩位置[J].机械工程学报,2002,38(3):139-143.
[7]	HE T,XIAO D H,PAN Q,et al.Analysis on accuracy improvement of rotor-stator rubbing localization based on acoustic emission beamforming method[J].Ultrasonics,2014,54(1):318-329.
[8]	李晶,邓艾东,杨勇,等.近场子空间聚焦的碰摩故障声发射定位方法[J].声学学报,2017,42(6):703-712.
[9]	何郴阳,王勋,李佳明.基于相关分析法的汽轮机动静碰摩故障定位方法研究[J].今日制造与升级,2021(3):62-64.