Browse Publications Technical Papers 2010-01-0749
2010-04-12

Experimental Investigation into Friction Induced Noise of Automotive Wiper System 2010-01-0749

The test is carried out to examine the vehicle interior noise, windscreen vibration and wiper blade vibration induced by wiper friction, under the combination conditions with various wiping speed and windscreen wetness. The noise's time-frequency characteristics, influence factors and noise source were approached by means of time domain, frequency domain and time-frequency domain analysis. The results indicated that wiper noise can be classified into reversal noise and wiping noise. The reversal noise is characterized by impulsive noise, and wiping noise is featured by wide-band noise with harmonic components. The nature of both types of noises is strongly affected by the windshield wetness; however, it is far less affected by the wiping speed. The wiping noise is mainly resulted from lateral and vertical vibration of wiper blades. Nevertheless, the wiping noises under wet and half-dry conditions are respectively caused by the wiper blade vibration of driver side and that of co-driver side.

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