›› 2012, Vol. ›› Issue (06): 1384-1389.

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Identification method of vehicle interior airborne noise transfer behavior based on m pseudo-stochastic sequence

GAO Yin-han1, TANG Rong-jiang2, LIANG Jie1, ZHAO Tong-hang3, LU Bing-wu3, JIANG Wen-jun3   

  1. 1. State Key Laboratory of Automobile Simulation and Control, Jilin University, Changchun 130022, China;
    2. College of Instrumentation & Electrical Engineering, Jilin University, Changchun 130061, China;
    3. FAW Group Corporation R&D Center, Changchun 130011, China
  • Received:2011-11-14 Online:2012-11-01

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Abstract: According to the source-path-receiver model of vehicle interior airborne noise, the m pseudo-stochastic sequence correlative identification method of transfer function was proposed. Simulation results demonstrated that the method has excellent noise immunity performance. A m sequence generator with adjustable shift clock frequency and optional register series was designed by the complex programmable logic device CPLD as core and external circuit. The field tests indicated that compared with broadband white noise sweep method, the identification method based on m sequence technique has advantages in accuracy and noise suppression. The test error ratio was less than 1/3, and the background noise of test environment could increase by 40 dB(A).

Key words: vehicle engineering, airborne noise, m pseudo-stochastic sequence, correlative identification, transfer function

CLC Number: 

  • U467.4
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