Abstract:The vehicle stability characteristic was represented by coupling of state variables, the front or rear tyre side slip angle and its angular velocity. To improve the maneuverability and stability of vehicle, a fuzzy supervisory control based on integrated control algorithm was implemented to coordinate the subsystems of the vehicle chassis control system. According to the control weights assigned by the upper supervisory controller, the subsystems including active steering control, active driveline control and active brake control were proposed to achieve their performance targets independently. An 8-degree-of-freedom nonlinear vehicle model was used in simulation to verify the integrated algorithm through critical test maneuvers. Simulation results confirm that, compared with the conventional stand-alone or combined controllers, the proposed hierarchical control algorithm provides vehicle with better performance of maneuverability and stability, while avoiding conflicts among the subsystems and decreasing consumption of the control.