A method for identification of transfer path of abnormal interior sound caused by front-end accessory Online publication date: Wed, 25-Jan-2017
by Cheng Yang; Chunlin He; Meilong Hu
International Journal of Vehicle Noise and Vibration (IJVNV), Vol. 12, No. 4, 2016
Abstract: Reduction of abnormal interior sound is of great significance for improving the acoustic performance and riding comfort of a vehicle. For a multiple-input single-output (MISO) system, if inputs are correlated, the cause of a problem might not be correctly detected. In this case, a transfer path analysis (TPA) method based on Hilbert transform (HT) approach can be used for severity ranking between every two input signals, to find out the major contributor and transfer direction. This paper chooses a case study of abnormal interior sound from a sport utility vehicle when the heating ventilation and air conditioning (HVAC) system is working. And the method above is applied with four correlated inputs. Practical analysis results illustrate that the compressor pressure low (PL) has the highest severity level over other inputs. After applying improvements, the interior noise decreases by 7-10 dB(A) at observation frequency and the abnormal sound problem is nearly solved.
Online publication date: Wed, 25-Jan-2017
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Vehicle Noise and Vibration (IJVNV):
Login with your Inderscience username and password:
Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.
If you still need assistance, please email firstname.lastname@example.org