摘要
车辆座椅系统对汽车平顺性以及驾乘人员的舒适性有着重要影响,磁流变阻尼器阻尼可控的特点可有效降低车辆在行驶过程中的振动。对座椅用磁流变阻尼器进行阻尼特性试验,使用遗传算法对阻尼器的Bouc-Wen模型进行参数识别。通过分析单自由度座椅系统的受力情况,建立车辆座椅悬架系统单自由度动力学模型,设计出用于座椅磁流变半主动悬架的开关天棚半主动控制策略并进行仿真。结果表明:使用遗传算法识别的参数及辨识出的模型均能满足要求。采用磁流变半主动座椅悬架后,相对于被动座椅悬架,座椅加速度峰值降低17.4%,座椅加速度均方根值减少13.1%,平顺性有明显的提高。
The vehicle seat system has an important impact on the car ride comfort. Using the controllable damping characteristics of the magnetorheological damper (MRD) can effectively reduce the vibration of the vehicles. In this paper,the damping characteristic of the MRD of the seat system is tested, and the parameters of the Bouc-Wen model of the MRDare identified by using genetic algorithm. Through analyzing the loading condition of the single DOF seat system, the single DOF dynamic model of the seat suspension system is established and the semi-active control system of the roof switch for the seat MRD semi- active suspension is designed and simulated. The result shows that the parameters and the model identified by using genetic algorithms can meet the requirements. After using the magnetorheological semi- active seat suspension, the seat acceleration peak is reduced by 17.4 %, the seat acceleration mean square root is reduced by 13.1 %.Automobile ride comfort is significantly improved.
作者
孟小杰
于海龙
芮筱亭
张釜诚
魏慜
MENG Xiao-jie;YU Hai-long;RUI Xiao-ting;ZHANG Fu-cheng;WEI Min(Institute of Launch Dynamics, Nanjing University of Science and Technology, Nanjing 210094, China)
出处
《噪声与振动控制》
CSCD
2017年第1期58-62,81,共6页
Noise and Vibration Control
基金
国家自然科学基金资助项目(61304137)
关键词
振动与波
磁流变阻尼器
BOUC-WEN模型
遗传算法
座椅减振
半主动控制
vibration and wave
magnetorheological fluid damper
Bouc- Wen model
genetic algorithms
seat cushioning
semi-active vibration control
