Time-domain Transfer Path Analysis of Automobile Interior Noise
CHU Zhi-gang1,2 XIONG Min2 YANG Yang3 HE Yan-song2
1. The State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400044, China；
2. College of Automotive Engineering, Chongqing University, Chongqing 400044, China；
3. Faculty of Vehicle Engineering, Chongqing Industry Polytechnic College, Chongqing 401120, China
Abstract：Compared with the traditional transfer path analysis(TPA) in the frequency domain, time-domain TPA can playback the noises and their path contributions and further analyze their sound quality so that it can make us comprehend and grasp the noises and their path contributions more intuitively and comprehensively. Based on the structure-borne impedance matrix method and the airborne source substitution method, this article presents a time-domain TPA method to analyze the automobile interior noise including structure-borne and airborne, and illustrates its implementation process in detail. On this basis, a time-domain TPA model is built to analyze the copilot position noise caused by the engine. The results show that the contribution of structure-borne is significantly greater than the contribution of airborne during the whole run-up and run-down process, the right upper mount and the left upper mount are the main contribution paths and their high path FRFs are the root causes of the great contributions. The results point out the direction for the establishment of subsequent noise control scheme.
[1] Tandogan F O, Guney A. Technical note: Vehicle interior noise source contribution and transfer path analysis [J]. International Journal of Vehicle Design, 2010, 52(1)：252-267.
[2] Plunt J. Finding and Fixing Vehicle NVH Problems with Transfer Path Analysis [J]. Sound and Vibration，2005, 39(11)：12-16.
[3] 郭荣, 万钢, 左曙光. 燃料电池轿车车内噪声传递路径分析研究[J]. 汽车工程, 2007, 29(8)：635-641.
Guo Rong, Wan Gang, Zuo Shuguang. A study on the transfer path of the interior noise of a fuel cell car[J].Automotive Engineering, 2007, 29(8)：635-641
[4] 王万英, 勒晓雄, 彭为, 等. 轮胎振动噪声结构传递路径分析[J]. 振动与冲击, 2010, 29(6)：88-92.
WANG Wanying, JIN Xiaoxiong, PENG Wei, et al. Structural transfer path analysis of vibration and noise [J]. Journal of Vibration and Shock, 2010, 29(6)：88-92.
[5] 侯锁军, 史文库, 毛阳. 应用传递路径分析方法对方向盘抖动贡献量的研究[J]. 西安交通大学学报, 2013, 47(3)：132-136.
HOU Suojun, SHI Wenku, MAO Yang. Vehicle Steering Wheel Wobbling Contribution Investigation by Transfer Path Analysis [J]. Journal of Xi'an Jiaotong University, 2013, 47(3)：132-136.
[6] 杨洋，褚志刚，熊敏. 基于阻抗矩阵法的车内共鸣声的传递路径分析[J]. 振动与冲击, 2014, 33(18): 170-176.
YANG Yang, CHU Zhigang, XIONG Min. Transfer path analysis of booming noise in a car cabin based on impedance matrix method [J]. Journal of Vibration and Shock, 2014, 33(18): 170-176.
[7] 曹跃云，张磊，杨自春，等.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.
A new OPA model for ship noise sources and test validation [J]. Journal of Vibration and Shock, 2013, 32(22): 158-162.
[8] 张磊，曹跃云，杨自春，等. 双层圆柱壳体水下振动噪声结构传递路径分析[J]. 振动与冲击,2012, 31(20): 12-16.
ZHANG Lei, CAO Yueyun, YANG Zichun, et al. Structural transfer path analysis for vibration and noise of a submerged cylindrical double-shell [J]. Journal of Vibration and Shock, 2012, 31(20): 12-16.
[9] Kim S J, Lee S K. Prediction of interior noise by excitation force of the powertrain based on hybrid transfer path analysis [J]. International Journal of Automotive Technology, 2008, 9(5)：577-583.
[10] Croker M, Maunder M, Imai Y, et al. Reducing crank rumble using transfer path analysis to assess engine modifications[C]. Noise and Vibration Conference and Exhibition，May 5-8, 2003, MI, United states: SAE Paper 2003-01-1428.
[11] Dubbaka K R, Zweng F J, Haq S U. Application of noise path target setting using the technique of transfer path analysis[C]. Noise and Vibration Conference and Exhibition ，May 5-8, 2003, MI, United states: SAE Paper 2003-01-1402.
[12] Gajdatsy P, Janssens K, Gielen L, et al. Critical assessment of Operational Path Analysis: mathematical problems of transmissibility estimation[C]. 7th European Conference on Noise Control 2008, EURONOISE 2008, June 29 - July 4, 2008, Paris, France：5463 - 5468.
[13] Gajdatsy P, Janssens K, Gielen L, et al. Critical assessment of Operational Path Analysis: effect of coupling between path inputs[C]. 7th European Conference on Noise Control 2008, EURONOISE 2008, June 29 - July 4, 2008, Paris, France：5821 - 5826.
[14] Janssens K, Gajdatsy P, Gielen L, et al. OPAX: A new transfer path analysis method based on parametric load models [J]. Mechanical Systems and Signal Processing, 2011, 25(4)：1321-1338.
[15] Kim S J, Og K G, Kim S G, et al. Estimation of interior noise by using hybrid transfer path analysis [J]. Noise Control Engineering Journal, 2008, 56(4)：256-268.
[16] Auweraer H, Mas P, etal. Transfer Path Analysis in the critical path of vehicle refinement: the role of fast, hybird and operational path analysis[C]. Noise and Vibration Conference and Exhibition，May 15 – 17, 2007, IL, United states: SAE Paper 2007-01-2352.
[17] Schuhmacher A, Tcherniak D. Engine contribution analysis using a noise and vibration simulator [J]. Sound and Vibration. 2009, 43(1)：16-21
[18] Bogema D. "Can You Hear It Now? Time-Domain Source-Path-Contribution Applied To a Diesel Engine"[J]. SAE Technical Paper 2012-36-0626.
[19] 郝鹏, 郑四发, 连小珉. 运动噪声源的时域传递路径模型及贡献率分析[J].机械工程学报, 2012, 48(8)：104-109.
HAO Peng, ZHENG Sifa, LIAN Xiaomin. Time-domain transfer path modal and contribution analysis of moving noise sources [J]. Journal of Mechanical Engineering, 2012, 48(8)：104-109.
[20] 卢文祥, 杜润生.机械工程测试∙信息∙信号分析[M].武汉：华中理工大学出版社, 1999：312-315.
[21] Janssens M H A, Verheij J W. Pseudo-forces methodology to be used in characterization of structure-borne sound sources [J]. Applied Acoustics, 2000, 61(3)：285-308
