C. Results of Braking Force Distribution
Fig. 16 shows the distribution of the braking force. The (a) curve represents the total required braking force; the (b) curve, (c) curve, and (d) curve represent the rear-wheel friction braking force, front braking force, and regenerative braking force, respectively. From Fig. 16, we can conclude that the friction braking force of the front wheel is smaller than the regenerative braking force, and the front-wheel braking force is provided mainly by the electrical braking in deceleration time of the EV. The higher the speed is, the greater the proportion of electrical brake is, which proves that high speed is more suitable for the regenerative braking.