TPA technique for ship coupled vibration sources based on BSS
ZHANG Lei, LI Bin, YANG Zichun, CHEN Guobing
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Power Engineering College, Naval University of Engineering, Wuhan 430033, China
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History+
Received
Revised
Published
2018-09-25
2019-07-02
2020-09-15
Issue Date
2020-08-28
Abstract
To solve the core problem of the operational transfer path analysis (OTPA) method, and improve its application range and engineering practicability，a TPA technique combined with blind source separation (BSS) was proposed. Firstly, problems of vibration sources’ cross coupling and missing vibration source being not able to be identified in OTPA method were analyzed deeply. Then, BSS and OTPA method were integrated and fused. The EMD-SVD method was introduced to quantitatively estimate the number of vibration sources, and guide selection of input measuring points of vibration sources. Signals of multiple vibration sources were regarded as convolutional aliasing, a novel non-orthogonal joint block diagonalization (JBD) method was applied to separate cross-coupling vibration sources. On the premise of solving the uncertainty of sorting of separated vibration sources, the BSS-OTPA model with few restrictions was established by taking separated vibration sources as input vibration sources of OTPA method. Finally, ship vibration acoustic radiation tests were conducted and the BSS-OTPA model was used to successfully identify and quantify ship mechanical vibration noise sources. It was shown that the study results can directly support real-time prediction of radiated acoustic field of ship mechanical equipment vibration sources, and vibration and noise control.
ZHANG Lei, LI Bin, YANG Zichun, CHEN Guobing.
TPA technique for ship coupled vibration sources based on BSS[J]. Journal of Vibration and Shock, 2020, 39(17): 150-156
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References
[1] Diez-Ibarbia A，Battarra M，Palenzuela J，et al．Comparison between transfer path analysis methods on an electric vehicle[J]．Applied Acoustics，2017(118)：83-101．
[2] 莫愁，陈吉清，兰凤崇. 逆子结构传递路径分析方法[J]. 吉林大学学报（工学版），2015，45(6)：1751-1756.
MO chou，CHEN Ji-qing，LAN Feng-chong. Inverse sub-structuring transfer path analysis method[J]. Journal of Jilin University(Engineering and Technology Edition) ，2015， 45(6)：1751-1756.
[3] Tcherniak D．Application of operational noise path analysis to systems with rotational degrees of freedom[C]．Proceedings of ISMA-2010．Leuven，Beigium，2010．
[4] 曹跃云，张磊，杨自春，何元安．船舶振动噪声源传递路径分析及试验验证[J]．振动与冲击，2013，32(22)：158-162．
CAO Yue-yun，ZHANF Lei，YANG Zi-chun，et al. A new OPA model for ship noise sources and test validation[J]. Journal of Vibration and Shock，2013，32(22)：158-162．
[5] 张鑑. 噪声振动传递路径研究及其应用[D]. 北京：北京交通大学，2015.
[6] Gajdatsy P，Janssens K，Gielen L．Critical assessment of operational path analysis：effect of neglected paths[C]．15th International Congress on Sound and Vibration．Daejeon：Korea ICSV，2008：1090-1097．
[7] 张磊，曹跃云，杨自春，何元安．运行工况下舰船振动-声传递路径分析及试验[J]．华中科技大学学报（自然科学版），2013，41(2)：41-47．
ZHANF Lei，CAO Yue-yun， YANG Zi-chun，et al. Theocratical analysis and experimental validation of vibration acoustic transferring paths of ships under operational conditions[J]. Journal of Huazhong Univ of Sci. & Tech.(Natural Science Edition) ，2013，41(2)：41-47．
[8] 郑启明，钱静. 利用改进重相干分析改进订标机工况传递路径模型[J]. 噪声与振动控制，2016，36(3)：169-173.
ZHENG Qi-ming，QIAN Jing. Improvement of the operational transfer path model of a label sewing machine using multiple coherence analysis[J]. Noise and Vibration Control，2016，36(3)：169-173.
[9] Gajdatsy P，Janssens K，Gielen L．Critical assessment of operational path analysis： mathematical problems of transmissibility estimation[J]．Acoustical Society of America，2008，5(123)：5463-5468．
[10] Cheng W，Lu Y Y，Zhang Z S，et al. Tikhonov regularization-based operational transfer path analysis[J]．Mechanical Systems and Signal Processing，2016(75)：494-514．
[11] 张磊，曹跃云，杨自春，何元安．水下圆柱壳体结构噪声的工况传递路径分析[J]．振动、测试与振动，2012，32(6)：897-602．
ZHANF Lei，CAO Yue-yun， YANG Zi-chun，et al. Structure-Borne Noise of Submerged Cylindrical Shell Based on Operational Transfer Path Analysis[J]. Journal of Vibration，Measurement & Diagnosis，2012，32(6)：897-602．
[12] Zhang L K，Jiang Y，He L．Bidirectional coupled noise source separation over the same frequency band using convolutive blind separation method[J]．Applied Aoucitc．2013，74(3)：301-306．
[13] Jacek D，Radoslaw Z．Rolling bearing diagnosing method based on Empirical Model Decomposition of machine vibration signal[J]. Applied Acoustics，2014(77)：195-203.
[14] 张伟涛. 盲信源分离的联合对角化方法研究[D]. 西安：西安电子科技大学，2011.
[15] LI Chang-li，XU Li-zhong，XU Shun-Fang. A nonorthogonal approximate joint diagonalization method excluding degeneration solution for blind source separation[J]. Journal of Computational and Theoretical Nanoscience，2014，11(2)：353-357.
[16] Zhang L，Cao Y Y，Yang Z C．Non-orthogonal joint block diagonalization based on the LU or QR factorizations for blind separation of vibration source[J]．Journal of Vibroengineering，2017，19(5)：3381-3394.
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