| Vehicle chassis system is a complex multi-level, multi-variable system. Thus, simplex controller designed for controlling the entire chassis system is not applicable. With the development of technology, various controllers designed to control different aspect of chassis dynamic performance has been emerged. ABS, ESP, ASS, these three are all typical control systems which individually was designed to improve vehicle safety, handling and stability, ride comfort, and now they all become hotspots of research, development and have been used more and more widely.As the complex degree of vehicles increased and people expect vehicles to performance better and better in many aspects, simplex controller cannot meet the demand of improving dynamic performance of vehicle chassis system as an integrated whole. Integrated control of vehicle chassis system on dynamic performance has incomparable advantages compared to traditional control methods, because of that, it is now one of the research hotspots of international research field. The key point of this technology is how to improve vehicle dynamic performance as an integrated whole by adopting effective and reasonable integration control strategy to dispel conflicts and interferences among several control systems, under the condition that different systems share same information come from transducers.This paper explored the integrated control strategy of ABS, ESP, ASS systems on the basis of analyzing core control strategies of these three systems. Firstly, analyze the development trend of chassis electronic control systems and integrated control theory. Secondly, analyze the control strategies and control methods of ABS and ASS system which are already developed and widely used, explored the control algorithm of ESP system which are not clearly enough to domestic researchers, put forward an effective ESP control algorithm and verified its feasibility. Lastly, analyze the factors of contradiction an conflicts among the three systems when it comes to integrated control, bring forward an integrated control strategy and use co-simulation technology between ADAMS/Car software and Matlab/Simulink software, verified its the effectiveness on the basis of multi-body dynamic model simulation and analysis. |
