七桥混连油气悬架车辆振动优化与控制  

VIBRATION OPTIMIZATION AND CONTROL OF SEVEN-AXLE HYBRID COUPLING HYDRO-PNEUMATIC SUSPENSION VEHICLE

作　　者：田文朋 夏峰[1] 徐信芯[2] TIAN WenPeng;XIA Feng;XU XinXin(Aviation Technology Key Laboratory for Full-Scale Aircraft Structures Static/Fatigue,Aircraft Strength Research Institute,Xi'an 710065,China;Construction Machinery College,Chang'an University,Xi'an 710065,China)

机构地区：[1]中国飞机强度研究所全尺寸飞机结构静力/疲劳航空科技重点实验室,西安710065 [2]长安大学工程机械学院,西安710065

出　　处：《机械强度》2022年第1期19-28,共10页Journal of Mechanical Strength

基　　金：国家自然科学基金项目(51805041)资助~。

摘　　要：为获得某七桥油气悬架登高平台消防车的最优振动响应,设计了同侧并连+对侧交连的油气悬架混合耦连方案。根据车辆结构特征,建立了"垂向-侧倾-俯仰-横摆"相耦合的二十自由度非线性动力学模型,联合仿真分析了车辆的振动响应特性,以及关键参数的影响规律。通过层次分析法和极差变换标准化处理,建立包含车辆平顺性和稳定性两评价指标的单目标优化函数,进行油气悬架系统参数优化运算。基于全局振动协调控制原理,应用李亚谱诺夫理论设计自适应律,进行模型参考自适应控制。仿真对比结果显示:参数优化叠加自适应控制后,车辆振动响应的评价指标得到了显著地改善。In order to obtain the optimal vibration response of a seven-axle elevated platform vehicle with hydro-pneumatic suspension(HPS),a hybrid coupling scheme of parallel connection&contralateral cross-linked for HPS was designed.The dynamic model with 20 degrees of freedom which can comprehensively reflect vehicle coupling vibration including vertical-lateral-longitudinal-transverse was established.The vibration response characteristics of the vehicle and the influence of key parameters were analyzed by joint simulation.A single objective function contains two evaluation indices of vehicle ride comfort and stability was established through analytic hierarchy process(AHP)and range transformation standardization.The parameters optimization calculation of HPS was carried out.The model reference adaptive control,based on the principle of global vibration,applying Lyapunov design adaptive law,was carried on the HPS.The simulation results show that the evaluation index of vehicle vibration response is significantly improved after parameter optimization and superposition adaptive control.

关 键 词：七桥混连油气悬架 动力学模型 平顺性和稳定性 参数优化 自适应控制 

分 类 号：TH114[机械工程—机械设计及理论]