摘要
为某SUV车提出一套基于液压互联悬架原理的车身动态稳定系统,运用多体动力学分析方法,分别建立装有横向稳定杆和车身动态稳定系统车辆的动力学模型,对比分析侧倾刚度的变化和影响。设计、制造并安装车身动态稳定系统,对实车进行一系列动态试验;运用基于状态变量的时域参数识别方法获取侧倾固有频率,进一步得到侧倾刚度。仿真和实车试验结果均表明,车身动态稳定系统可增大侧倾固有频率和刚度,且其增幅随着系统工作压力提高而加大;车身动态稳定系统在不影响车辆舒适性和越野性能的前提下,可以提高动态侧倾稳定性,性能优于传统的横向稳定杆。
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.
出处
《汽车工程》
EI
CSCD
北大核心
2016年第8期967-973,共7页
Automotive Engineering
基金
国家自然科学基金(U1234208)资助
关键词
液压互联悬架
车身动态稳定系统
状态变量法
参数识别
interconnected hydraulic suspension
vehicle body dynamic stabilization system
state variable method
parameter identification
