摘要
以平行平板流动模型和Bingham模型为理论基础,推导了磁流变减振器的阻尼力计算公式.在车辆悬架动态性能模拟试验台上对磁流变减振器的示功特性和速度特性进行了试验验证.最后基于天棚on-off控制,利用dSPACE搭建了实车试验平台,并进行了实际越野路面的道路试验.试验结果表明:与传统被动悬架对比,磁流变半主动悬架能够很好地抑制车身以及驾驶员座椅的低频共振峰值,降低车身垂向振动幅值,提高车辆行驶平顺性和乘坐舒适性.
The paper introduced the theory and the structure of the magneto-rheological （MR） absorber, based on the parallel plate flow model and Bingham model, a mathematic model of the damper force was presented as the basic theory for the structure design of the damper. By way of the bench test for the MR damper, the damping-displacement and speed characteristics were studied. And based on the skyhook on-off control algorithm, the real car test platform was built for the road test. The experiment data indicats that. compared with the traditional passive suspension, the MR semi-active suspension can restrain the low frequency resonance amplitude significantly and reduce the acceleration RMS of vehicle body; the MR absorber can improve the vehicle ride comfort effectively.
出处
《北京理工大学学报》
EI
CAS
CSCD
北大核心
2014年第2期148-152,共5页
Transactions of Beijing Institute of Technology
基金
国家部委预研项目(1030020220701)
关键词
磁流变减振器
台架试验
半主动悬架
on-off控制
magneto-rheological damper
bench test
semi-active suspension control
on-off con-trol
