摘要
考虑汽车主动悬架控制与路面工况的关系,提出基于模态能量比的多工况路面特征识别方法。首先基于七自由度整车模型对车辆系统进行模态分析,得到7个运动模态及模态参数。然后构建包含随机平直路、斜坡路、连续减速带三种路面特征的多工况路面模型,利用模态能量法对车辆运动状态进行分析,得到7个运动模态的模态能量比及其变化率。最后在得到的各模态能量比变化率基础上,对多工况路面特征进行识别。通过MATLAB/simulink建模仿真验证了识别方法的有效性,验证结果表明,基于模态能量比的路面特征识别方法可以准确地识别路面特征,为不同路面工况下的汽车主动悬架自适应切换控制研究奠定基础。
Considering the relationship between the active suspension control of the vehicle and the road conditions, a method for identifying the characteristics of road conditions is proposed based on modal energy ratio. Firstly, the modal analysis of the vehicle system based on the seven-degree-of-freedom vehicle model resulted in seven motion models and model parameters. Then, a multi-actuated road surface model including random straight roads, slope roads, and continuous deceleration belts was constructed. The modal energy method was used to analyze the vehicle movement status, and the modal energy ratios of the seven movement modals were obtained. Change rate. Finally, on the basis of the obtained modal energy ratio change rate, the characteristics of multiple road conditions were identified. The effectiveness of the identification method was verified through MATLAB/Simulink modeling simulation. The verification results show that the road surface feature recognition method based on the modal energy ratio can accurately identify the road surface characteristics, and is an adaptive switching of the vehicle active suspension under different road conditions, which lays foundation for control researches.
作者
陈双
包黎明
CHEN Shuang;BAO Li-ming(Automobile&Transportation Engineering College,Liaoning University of Technology,Jinzhou Liaoning 121001,China)
出处
《计算机仿真》
北大核心
2019年第11期90-95,共6页
Computer Simulation
关键词
模态分析
运动模态
模态能量比
多工况
路面特征识别
Modal analysis
Motion mode
Modal Energy Ratio
Multi-station
Pavement characteristic recognition
