高速动车组一系垂向半主动悬挂研究
STUDY ON SEMI-ACTIVE PRIMARY VERTICAL SUSPENSION OF HIGH-SPEED ELECTRIC MULTIPLE UNIT
曹洪勇 1付彬 2王旭 1刘彬彬 2Di Gialleonardo Egidio 2Bruni Stefano2
作者信息
- 1. 中车青岛四方机车车辆股份有限公司技术中心,山东青岛 266111
- 2. 米兰理工大学机械工程系,意大利米兰20156
- 折叠
摘要
轻量化是轨道交通车辆发展的重要方向,可降低车辆能耗和运营维护成本.然而车体轻量化改变了车体弹性模态频率,增大了车体结构振动,造成车辆垂向舒适性恶化.提出了一系垂向半主动悬挂策略,即采用可变阻尼减振器替换原有一系垂向减振器,通过对减振器阻尼特性进行实时控制,改善车体刚性和一阶弯曲模态振动.分析了车体刚性和弹性振动与构架振动的耦合关系,在此基础上对一系半主动悬挂的工作原理进行阐述.改进了经典的车辆垂向动力学模型,通过模型计算验证了车体和构架的多种耦合振动关系.对磁流变阻尼减振器的动态特性开展试验测试,建立了该减振器的动力学模型,实现对磁流变阻尼减振器非线性特性的准确预测.以国内某高速列车为原型,建立了完整的车辆动力学模型,并结合磁流变阻尼减振器动力学模型,对一系半主动悬挂的控制策略和应用效果展开研究,得到了两种易于工程应用的控制方法.结果表明一系半主动悬挂对车辆垂向振动,尤其是车体一阶弯曲振动具有显著的控制效果,可改善车辆垂向舒适性指标约30%.
Abstract
Light-weighting is a crucial development trend of rail vehicles,which enables reduction of energy consumption and maintenance cost.However,a light-weight car-body is prone to reduce natural frequencies of car-body flexible modes and cause more intensive structural vibration,resulting in degradation of vertical ride comfort.This work establishes the technology of semi-active primary suspension where the original vertical passive damper in primary suspension is replaced with the adjustable damper.The damping is controlled to improve the car-body rigid and first bending vibrations.The coupling relationship between car-body and bogie vibrations is firstly analyzed which is the basis to understand the working mechanism of semi-active primary suspension.Then the classic vehicle simplified vertical model is improved to fully capture and verify the coupling effect between car-body and bogies.Afterwards,the dynamic behavior of a prototype of magneto-rheological damper is characterized in laboratory tests and a dynamics model is established,capable of representing its non-linear behavior with good accuracy.Based on a real high-speed vehicle in China,a complete vehicle dynamics model is established,integrating the validated damper model to study the control strategy and assess the control effect in a real application.Two control strategies are studied showing satisfactory reduction of car-body vibration,especially for the vibration components due to the car-body first bending,enabling approximately 30%improvement of ride index.
关键词
一系半主动/垂向舒适性/车体一阶弯曲/磁流变阻尼Key words
semi-active suspension/vertical ride comfort/car-body first bending/magneto-rheological damper引用本文复制引用
基金项目
国家重点研发计划资助项目(2022YFB4301202)
国家重点研发计划资助项目(2022YFB4300105)
出版年
2024
NETL
NSTL
万方数据