Control system for an intelligent hybrid electric vehicle

An intelligent hybrid electric vehicle (IHEV) has been designed with integrated intelligent vehicle and hybrid electric vehicle capabilities. A hierarchical control structure, which integrates an intelligent driving assistance control object determination layer, a total driving/braking torque determination layer, a total torque distribution layer, and a torque coordinate control layer, is used in the vehicle control system. The vehicle control strategy was verified in simulations and experimental tests. The results show that the hierarchical IHEV control system successfully and smoothly realizes all of the functions while guaranteeing the optimum safety, economic performance, and driving comfort.