Lateral Stability Control of a Distributed Electric Vehicle Using a New Sliding Mode Controler

Lateral instability is a key problem that restricts vehicle motion safety of distributed electric vehicles (DEV). This paper designs a new lateral control system composed of subsystems of high, middle and low levels and brings forth an improved sliding mode controller (SMC) method. The similar reference longitudinal velocity generation system is designed via neural network observer and fuzzy logic controller to ensure the smooth and safe driving of the vehicle on low adhesion roads. Relevant working simulation also is carried out to verify the effectiveness of the control method above. The results show that the new control system based on the improved SMC method brings about good yaw rate and speed tracking performance of vehicles and strong robustness of the control system, and can still ensure excellent lateral driving stability on the low adhesion roads, or when making a turn or the friction coefficient is changed.