Active Control System of Vehicle Interior Road Noise with Impulsive Noise

Abstract:

Aimed at the robustness problem caused by the impulsive noise in the road noise active control system， an active control method for the impulsive noise was proposed. First， the road noise acquisition test was conducted， 4 optimal reference signal positions were selected， and the data of road impulsive noise were collected. Then， based on the multi-channel adaptive filtering algorithm， an impulse noise active control algorithm combining the normalized multi-channel adaptive filtering algorithm and the symbolic algorithm was proposed. After that， based on the proposed impact noise active control algorithm， a simulation model of the road noise active control system was built， and the collected impact noise signal and acceleration signal were used for simulation analysis. Finally， using four selected acceleration signals and one loudspeaker to control the road noise at the driver’s place， an active control test of road impact noise was performed to verify the effectiveness of the method proposed. Compared with the original algorithm， the stability and noise reduction effect of the algorithm have been greatly improved.

Key words:active noise control;impulsive noise;normalization algorithm;road test