基于多目标协同优化算法的单轴式单轨车辆系统参数优化研究  

Parameter Optimization of Single-Axle Monorail Vehicle System Based on Multi-objective Collaborative Optimization Algorithm

作　　者：文孝霞[1] 高爽 杜子学[1] 杨震[1] 邬浩鑫 WEN Xiaoxia;GAO Shuang;DU Zixue;YANG Zhen;WU Haoxin(School of Mechatronics and Vehicle Engineering,Chongqing Jiaotong University,Chongqing 400074,China)

机构地区：[1]重庆交通大学机电与车辆工程学院,重庆400074

出　　处：《重庆交通大学学报（自然科学版）》2023年第6期146-154,共9页Journal of Chongqing Jiaotong University(Natural Science)

基　　金：城市轨道交通车辆系统集成与控制重庆市重点实验室开发基金项目(CKLURTSIC-KFKT-202004);公共交通装备设计与系统集成重庆市重点实验室开发基金项目(CKLPTEDSI-KFKT-202107)。

摘　　要：为提高单轴式单轨车辆的稳定性能,分析了带空间杆系结构的单轴式转向架跨座式单轨车辆结构,建立了带空间杆系结构的单轴式单轨车辆非线性动力学模型。利用全局灵敏度方法,开展了单轨车辆空间杆系结构定位参数、悬挂参数对单轴式单轨车辆稳定性能灵敏度分析。以单轴式单轨车辆车体侧滚角和轮重减载率为目标,以车辆曲线通过性为约束,基于改进型遗传算法(NSGA-II)对单轴式转向架空间杆系结构定位参数及系统悬挂参数开展优化研究。优化结果显示:参数优化后,单轨车辆车体侧滚角减少了6.695%,轮重减载率减少了9.262%,提升了单轴式单轨车辆的运行稳定性。In order to improve the stability of the single-axle monorail vehicle,the structure of the single-axle bogie straddle monorail vehicle with spatial linkage structure was analyzed,and the nonlinear dynamics model of the singleaxle monorail vehicle with the spatial linkage structure was established.The sensitivity analysis of the positioning parameters and suspension parameters of the spatial linkage structure of the monorail vehicle to the stability of the single-axle monorail vehicle was carried out by use of the global sensitivity method.Taking the side rolling angle and wheel load reduction rate of the single-axle monorail vehicle body as the target and taking the vehicle curve passing ability as the constraint,the optimization research was conducted on the positioning parameters of the spatial linkage structure and system suspension parameters of a single-axle bogie,which was based on the improved genetic algorithm(NSGA-II).The optimization results show that after the parameter optimization,the side rolling angle of the monorail vehicle body is reduced by 6.695%,and the wheel load reduction rate is reduced by 9.262%,which improves the operation stability of the single-axle monorail vehicle.

关 键 词：车辆工程 单轴式单轨车辆 运行稳定性 侧滚角 减载率 改进型遗传算法 

分 类 号：U232[交通运输工程—道路与铁道工程]