The transfer path of the low frequency brake torque variation shifting to the steering wheel was acquired. The steering wheel vibration reappearance test was conducted as a road test and dynamo test rig experiments were also carried out. The effect factors were analyzed including the influences of different parts of the front suspension and steering system. The research work presented in the psper will be helpful for control method researching to reduce the vibration through transfer path. The results show that the brake torque variation passes the tire-ground coupling system, the front suspension system, the steering system and finally reaches to the steering wheel. The transfer path attenuates the signal overall and amplifies thd signal in some local parts. The mechanical amplification in the structure plays an important role in the signal transferring.
Journal of Vibration and Shock
brake judder, transfer path, order analysis, brake torque variation(BTV)