A study on the anti-roll performance of vehicle body dynamic stabilization system

Publication Type:
Journal Article
Qiche Gongcheng/Automotive Engineering, 2016, 38 (8), pp. 967 - 973
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© 2016, Society of Automotive Engineers of China. All right reserved. A vehicle body dynamic stabilization system based on the principle of interconnected hydraulic suspension is proposed for a sport utility vehicle, and the dynamics models for vehicles with transverse stabilizer bar and dynamic stabilization system are set up respectively by using multi-body dynamics analysis method, with the variations and effects of rolling stiffness analyzed. The vehicle body dynamic stabilization system is designed, manufactured and installed on the vehicle with a series of dynamic tests conducted. Natural rolling frequencies and hence rolling stiffness are obtained by time-domain parameter identification based on state variable method. The results of both simulation and test show that the vehicle body dynamic stabilization system can increase rolling natural frequency and stiffness and their increments rise with the operating pressure of system. The vehicle body dynamic stabilization system can enhance dynamic rolling stability with its performance superior to traditional stabilizer bar, while maintaining the ride comfort and off-road performances of vehicle.
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