A study of integrated chassis control algorithm with brake control and suspension control systems for vehicle stability and handling performance

Electronic control system has become increasingly popular in automotive applications in recent years, resulting in significant improvement on the vehicle performance. Chassis systems were made progress more stabile and higher dynamic performance by braking control, steering control and suspension control. Especially, ESC (electronic stability control) as an active safety technology assists the driver to keep the vehicle on the intended track and thereby actively prevents accidents. But most electronic chassis control systems so far have been designed for optimization of its own performance. This, sometimes, has resulted in performance degradation when two or more control modules were operating together. Therefore, many studies are shown that is being given to judicious integration of individual chassis control systems in an effort to push the overall vehicle performance further to its limit. The paper deals with the investigation of integration synergy of brake and suspension control for improving vehicle stability on emergency handling. The basic idea is to take electronic braking control system and controllable suspension. In this paper, ESC contributions to active safety and CDC (continuous damping control) to semi active suspension have been present with a reliable simulation environment. Then, algorithms for integration of suspension and brake control systems have been developed. An integrated approach for braking and suspension control for maximum lateral stability that is an optimal collaboration between the brake & suspension with respect to maximum stability in highly dynamic maneuvers, various integration rules have been designed, tested, and compared with one another, and the results will be investigated in this paper.