The Augmented Electronic Stability Program With Semi-Active Air Suspension Integrated

To improve an automobile’s ride and comfort, handling and stability etc., based on the stiffness test of the air spring, a 15 DOFs vehicle model was created, a strategy of Augment Electronic Stability Program (AESP) with semi-active air suspension integrated was realized. Furthermore, their integrated control strategy combined both the skyhook and groundhook under critical operating conditions was proposed. The property of the vehicle with different control strategies under critical operating conditions of double-line change was simulated in both time and frequency domain, also the phase portrait of the vehicle concerning with the stability was provided, also the Safety Margin of the vehicle introduced in this paper was presented. It’s shown that the trajectory of the automobile is more ideal with AESP, the safety of automobile can be improved, the overall performance of vehicle is optimized as well.