等速驱动轴横摆振动的研究及解决

Research And Solution Of Swing Vibration Of Drive Shaft

针对某电动汽车在40km/h到60km/h速度下,全油门加速产生的整车振动问题,运用噪声阶次和振动分析,确定为驱动轴三阶振动,产生原因为全油门加速时,驱动扭矩增大产生的轴向派生力(GAF),使整车产生Y向振动,即横摆振动。根据驱动轴轴向派生力的影响因素,通过采用无震颤式万向节(AAR),降低轴向派生力,解决整车横摆振动。

Aiming at the vibration problem of a electric vehicle caused by acceleration offull throttle at speeds ranging from 40 km/h to 60 km/h,the third-order vibration of driving shaft is determined by noise order and vibration analysis.The reason is that when acceleration of fullthrottle,increased driving torque has generated axial force(GAF),which makes the whole vehicle produce Y-direction vibration,i.e.yaw.Vibration.According to the influencing factors of the generated axial force of the drive axle,the generated axial force is reduced and the yaw vibration of the vehicle is solved by using the non-vibration universal joint.