Experimental performance Analysis of Multi-Channel Active Control System for Road Noise in Vehicles Using FXLMS algorithm 2020-01-1277
It’s significant to analyze the Experimental performance of active control system for road noise. In this paper, a 4-channel active control system of vehicle road noise based on FXLMS algorithm is established. The bench test and road test are carried out to test and analyze the performance of the control system. Firstly, the general mathematic model of the multi-channel active control system based on FXLMS algorithm is established. The computational complexity of the algorithm is analyzed and compared with that of the adaptive notch filter. Secondly, a hardware-in-the-loop test bench based on multi-channel FXLMS algorithm and a measurement system based on DASP are set up, to measure the noise reduction performance of active noise control system under various working conditions. Finally, using four speakers, four Accelerometers and two microphones, the bench test and the road test are carried out under various working conditions and the results are analyzed.