Design of a Deceleration Feedback Control System for Stable Braking Feel

摘要

With a conventional hydraulic brake system, the braking feel is affected by the friction characteristics of the brake pad, and other factors. Furthermore, in a cooperative braking control system with both regenerative braking and friction braking, variations in such friction characteristics can cause unintentional deceleration fluctuations. To suppress such fluctuations, we designed a deceleration feedback control system using two-degree-of-freedom control and model reference control methods. This paper proposes the deceleration control system and shows its effectiveness based on both simulation and experimental results obtained with a vehicle equipped with a brake-by-wire system.