Driving Force Control of Electric Vehicles with Estimation of Slip Ratio Limitation Considering Tire Side Slip

Abstract

This paper presents the estimation method of the slip ratio limitation for electric vehicles that ensures traction, based on the tire brush model considering tire side slip. Also the estimated slip ratio limitation is applied to the driving force control, a traction control that has been proposed by the authors' research group. According to the proposed method, vehicle safety can be improved by preventing understeer when cornering with accelerating or decelerating on slippery roads. Effectiveness of the proposed method is verified by experiments using an experimental electric vehicle.