Noise Analysis of Electric Drive Assembly Based on Tonality Model
In order to analyze the contribution of different frequency bands of noise to the annoyance degree of a low-speed and high-torque electric drive assembly,a low-speed and high-torque electric drive assembly was used as the research object,combined with psychoacoustic theory to establish a tone theory analysis model of the electric drive assembly.The difference in the degree of the influence of the tone on the subjective annoyance at different frequencies of the electric drive assembly was considered,and the theoretical analysis model of the modified tone(annoyance)was established.Combined with the noise source distribution characteristics of the electric drive assembly,the low frequency noise(0～400 Hz),intermediate frequency noise(＞400～2 500 Hz)and high frequency noise(＞2 500 Hz)caused by the electric drive assembly were compared and analyzed.The results show that the most important factors affecting the annoyance level are electromagnetic force wave and switching frequency induced noise,followed by transmission gear noise.
Electric drive assemblyPsychoacousticsTonalityAnnoyance
万方数据
维普
