ABSTRACT

Vehicles equipped with in-wheel motors (IWMs) are capable of independent control of the driving force at each wheel. These vehicles can also control the motion of the sprung mass by driving force distribution. However, one disadvantage of IWMs is an increase in unsprung mass, which may result in an uncomfortable ride. This research aimed to improve ride comfort through driving force control. As a result, a method was derived by analysis that reduced uncomfortable vibration through a control that applies unsprung vertical velocity in the direction that enhances that velocity. The improvement effect on ride comfort of this control was then verified.