Excavator seat vibration investigation based on operational transfer path analysis
Pang Xiao-ke1, Zhou Yi-qi1, Tang Wei1, Wang Li,2, Mi Yong-zhen1
1.Key Laboratory of High Efficiency and Clean Mechanical Manufacture, Ministry of Education, School of Mechanical Engineering Shandong University, Jinan 250061, China;
2.School of Mechanical and Automotive Engineering,Qilu University of Technology,Jinan 250353,China
Abstract：The vibration of a new type of excavator prototype was inspected,and the vibration transmission from the engine to the cab seat was analyzed. The singular value decomposition (SVD) technique was applied to improve the method of operational transfer path analysis (OTPA).With the vibration test data under working condition,an OTPA model of vibration from the engine to the cab seat was built.The frequency domain features of the synthesized output signal agree well with the test output signal, so the model is proved valid. The key frequencies were revealed by analysing the synthesized output signal. The path necessary to be improved was identified in the light of all paths’vibration contribution spectrum and vector diagrams.Some specific improvements were proposed in accordance with the spectrum analysis of transmissibility function and acceleration. The research provides an efficient engineering reference to noise or vibration transmission control.
庞晓柯1，周以齐1，唐伟1，王丽1，2,米永振1. 基于工况传递路径分析的挖掘机座椅振动研究[J]. 振动与冲击, 2015, 34(9): 171-176.
Pang Xiao-ke1, Zhou Yi-qi1, Tang Wei1, Wang Li,2, Mi Yong-zhen1. Excavator seat vibration investigation based on operational transfer path analysis. JOURNAL OF VIBRATION AND SHOCK, 2015, 34(9): 171-176.
[1] 庞剑，谌刚，何华．汽车噪声与振动——理论与应用[M]．北京：北京理工大学出版社，2006．
[2] LEI Liu. A frequency response function-based inverse substructuring approach for analyzing vehicle system NVH response [D]. Tuscaloosa: The University of Alabama, 2002.
[3] KONERS G. Panel noise contribution analysis: An experimental method for determining the noise contributions of panels to an interior noise [C]//SAE Technical Papers：SAE International, 2003-01-1410.
[4] DUBBAKA K R, ZWENG F J, HAQ S U. Application of Noise path target setting using the technique of Transfer Path Analysis [C]//SAE Technical Papers：SAE International, 2003-01-1402.
[5] 刘东明，项党，罗清，等．传递路径分析技术在车内噪声与振动研究与分析中的应用[J]．噪声与振动控制，2007（04）：73-77．
Liu Dong-ming, Xiang Dang, Luo Qing, et al. Applying transfer path analysis to automotive interior noise and vibration refinement and development [J]. Noise and Vibration Control, 2007(04): 73-77.
[6] 慕乐，周鋐．基于传递路径分析的怠速工况下转向盘振动路径识别及改进[J]．汽车技术，2011（04）：15-17+21．
Mu Le, Zhou Hong. Identification of steering wheel vibration paths and improvement in idle condition based on transfer path analysis [J]. Automobile Technology, 2011(04): 15-17+21
[7] 赵彤航．基于传递路径分析的汽车车内噪声识别与控制[D]．长春：吉林大学，2008．
[8] MAIA N M, SILVA J M, RIBEIRO A R. The transmissibility concept in multi-degree-of-freedom systems [J]. Mechanical Systems and Signal Processing, 2001, 15(1): 129-137.
[9] GAJDATSY P, JANSSENS K, DESMET W, et al. Application of the transmissibility concept in transfer path analysis [J]. Mechanical Systems and Signal Processing, 2010, 24(7): 1 197-1963 .
[10] SITTER G D, DEVRIENDT C, GUILLAUME P, et al. Operational transfer path analysis [J]. Mechanical Systems and Signal Processing, 2010, 24(2): 416 - 431.
[11] 郭荣，裘剡，房怀庆，等．频域传递路径分析方法(TPA)的研究进展[J]．振动与冲击，2013（13）：49-55．
Guo Rong, Qiu shan, Fang Huai-qing, et al. Advance in studying on transfer path analysis methods in frequency domain [J]. Journal of Vibration and Shock, 2013(13): 49-55.
[12] KAKARALA R, OGUNBONA P O. Signal analysis using a multiresolution form of the singular value decomposition [J]. Image Processing, IEEE Transactions on, 2001, 10(5): 724 - 735.
[13] KOHAVI R. A study of cross-validation and bootstrap for accuracy estimation and model selection [C]//IJCAI-95. Proceedings of the Fourteenth Internatio．Montreal, Que., Canada, 20-25 Au, San Mateo, CA, USA：Morgan Kaufmann Publishers, 1995: 1137-43.
[14] DE KLERK D. Dynamic response characterization of complex systems through operational identification and dynamic substructuring [D]. Delft: Technische Universiteit Delft, 2009.
[15] RENINGER P -, MARTELET G, DEPARIS J, et al. Singular value decomposition as a denoising tool for airborne time domain electromagnetic data [J]. Journal of Applied Geophysics, 2011, 75(2): 264 - 276.
[16] 付俊涵．传递路径中声源串扰消除问题研究[D]．北京：北京交通大学，2012．
[17] KLERK D D, OSSIPOV A. Operational transfer path analysis: Theory, guidelines and tire noise application [J]. Mechanical Systems and Signal Processing, 2010, 24(7): 1950-1962.
