The Exploration of Evaluation Method about the Driving Electromotor Acoustic Comfort of the Pure Electric Vehicles

Abstract:

The driving electromotor noise of a pure electric bus was taken as the evaluation object in this paper. The noise signals were gathered by dual channels and to simulating human auditory by synthetic stereo, and were processed into a series of noise samples for human subjective testing generated according to the 3dB differential progressive attenuation of noise sound pressure level. Then the author investigated the human body comfort/discomfort subjective feelings under various noise samples through the high fidelity audio playback, described the subjective feelings with ‘descriptor’, and quantified the subjective feelings with scores at the same time. On this basis, the correlation of subjective feelings between acoustic comfort and discomfort were revealed, and the noise sample sets corresponding with comfort feeling were found out. Based on these, an evaluation method of electromotor acoustic comfort was established.

• Periodical: Applied Mechanics and Materials (Volume 224)
• Pages: 113-118
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.224.113
• Online since: November 2012
• Authors: Ming Liang Yang, Wei Ping Ding
• Keywords: Acoustic Comfort, Acoustic Discomfort, Evaluation Method, Noise of Electromotor, Pure Electric Vehicles, Subjective Feeling

References

[1] Zaizhou Wang, Qiang Song, Chengning Zhang. Noise Analysis and Decreases on the Traction Motor of Electric Vehicle. Micromotors, No. 9, Vol. 39 (2006), pp.62-63, 68.

[2] Chunxiang Zhang, Renpu Jiao, Zaizhou Wang. Research of Noise Spectrum Characteristics of Traction Motor System for Electric Vehicle. Micromotors, No. 4, Vol. 42(2009), pp.73-74.

[3] Ying Dai. Electromagnetic Noise Investigation of Induction Machine for Electric Vehicle Drives. Harbin: engineering Ph.D. Thesis of Harbin Institute of Technology, November, (2007).

[4] Yan Shi, Gequn Shu, Fengrong Bi. Sound Quality Evaluation and Prediction of Vehicle Exhaust Noise. Journal of Tianjin University, No. 6, Vol. 44(2011), pp.511-515.

[5] Dengfeng Wang, Zongwei Liu, Jie Liang, Shigang Wang, Jiguang Jiang. Subjective evaluation test and objective quantificational description of vehicle interior noise quality. Journal of Jilin University(Engineering and Technology Edition), Vol. 36(2006).

[6] Wei Zhang, Guangxiong Chen, Xinbiao Xiao, Xuesong Jin. Objective Evaluation of Sound Quality of Noises inside High Speed Train. Journal of the China Railway Society, No. 2, Vol. 33(2011), pp.13-19.

[7] Jinmin You, Tianning Chen, Limei He. Subjective and Objective Evaluation of Compressor Sound Quality and Correlation Research, Fluid Machinery, No. 1, Vol. 35(2007), pp.1-4, 53.

[8] Weiping Ding, Hongliang Li, Yanmei Liu, Mingliang Yang. Acoustic optimization design for suspension characteristics based on the method of dynamic subsystem modification. Int. J. Vehicle Noise and Vibration, No. 1, Vol. 4(2008), pp.220-234.

DOI: 10.1504/ijvnv.2008.021896

[9] Ding, W. and Chen, H. Research on the interior noise contributed from a local vibration of an elastic thin-walled cavity [J], Applied Acoustics, Vol. 63(2002), p.95–102.

DOI: 10.1016/s0003-682x(01)00016-0

[10] Ding, W-P. Study on the performance matching analysis method between the suspension and entire car systems [J]', Machinery Design and Manufacture (the People, s Republic of China), No. 6(2002), pp.57-59.

[11] Lijian Zhang, Martin G. Helander, Colin G. Drury. Identifying Factors of Comfort and Discomfort in Sitting. Human Factors, No. 3, Vol. 38(1996), pp.377-389.

DOI: 10.1518/001872096778701962