Slip ratio estimation and regenerative brake control without detection of vehicle velocity and acceleration for electric vehicle at urgent brake-turning

In slip ratio control systems, it is necessary to detect vehicle velocity in order to detect the slip ratio. However, it is very difficult to measure the vehicle velocity directly. Then, we have proposed an estimation method and control method of slip ratio without detecting both the vehicle velocity and the acceleration. In this paper, we carry out simulations and experiments of the estimation method and the control method in turning motion with an electric vehicle. The vehicle motion is stable with the slip ratio control. We verify practical effectiveness of the proposed algorithm.