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磁流变悬架的瞬态动力学控制研究
  • 期刊名称:振动工程学报,2008,Vol.21(2);167-172
  • 时间:0
  • 分类:U463[机械工程—车辆工程;交通运输工程—载运工具运用工程;交通运输工程—道路与铁道工程]
  • 作者机构:[1]重庆大学机械工程学院,重庆400044, [2]重庆大学光电技术及系统教育部重点实验室,重庆400044
  • 相关基金:国家自然科学基金资助项目(60574074);博士后基金(20070420719)资助项目
  • 相关项目:基于磁流变技术的探月机器人着陆缓冲控制
中文摘要:

针对磁流变阻尼器的时滞对悬架在凸块路面下的性能影响较大,设计了基于Smith预估补偿的仿人智能控制器,并在Matlab/Simulink平台上进行了仿真。对改装的某轿车进行了凸块路面输入路试,试验结果与仿真结果表明,与原车相比较,采用仿人智能控制器的半主动悬架能够降低车身振动的加速度峰峰值,缩短调整时间,改善舒适性和操纵稳定性,基于Smith预估补偿的仿人智能控制器能够消除时滞对系统性能的影响,加速度峰值降低近34.67%,控制效果优于天棚阻尼控制。

英文摘要:

The time-delay of Magneto-rheological (MR) damper may greatly reduce the control performance of MR suspension on impulse road. To avoid the influence of time-delay, a Human Simulated Intelligent Control (HSIC) based on Smith's predictor is designed and numerical simulation is carried out on Matlab/Simulink platform. The road test of a refitted saloon car is carried out on impulse road. Both impulse road test and simulation show that the MR suspension with HSIC controller can reduce the acceleration peak values of vertical vibration and pitch vibration and shorten adjusting time and improve ride comfort and stability. The HISC controller with Smith's predictor can avoid the effect of time-delay on control performance, and peak-to-peak value of vertical vibration acceleration reduced by 34. 67%, whose control performance is better than that of skyhook.

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