Noise prediction and optimization of E-axle based on vibration and noise contour map
The problem of high noise level can be circumvented by optimizing the torque characteristics of the E-axle in the pre-development phase of the project.According to the vibration and noise characteristics of the E-axle platform,a set of stable and efficient test procedures and analysis methods are proposed.First,a complete set of experimental procedures was designed,and an accurate data analysis method was formulated.Then contour map that can fully reflect the vibration and noise characteristics of the E-axle was drawn.Finally,the vibration and noise contour map of the E-axle platform is used to accurately evaluate the vibration and noise risk under the acceleration condition of the E-axle,which can provide pre-design guidance for the E-axle torque characteristics for original equipment manufacturers and electric drive axle parts companies.This method was used to successfully identify the whine of the motor and gears of an E-axle under constant speed and acceleration conditions.The torque characteristics of the E-axle was optimized,and the peak value of the 48th-order noise of the motor was reduced 8.5 dB(A),which confirmed that the method was accurate and reliable,and had the value of popularization and application.
E-axleNoise and vibrationContour mapNoise prediction
万方数据
维普
