电力动车组变刚度转臂节点的半主动控制  

Semi-active Control of Rotary Arm Joints with Variable Stiffness for EMU

作　　者：李旭阳 代亮成[1] 池茂儒[1] 赵明花 周荻 LI Xuyang;DAI Liangcheng;CHI Maoru;ZHAO Minghua;ZHOU Di(State Key Laboratory of Rail Transit Vehicle System,Southwest Jiaotong University,Chengdu,610031)

机构地区：[1]西南交通大学轨道交通运载系统全国重点实验室,成都610031

出　　处：《中国机械工程》2025年第1期160-167,176,共9页China Mechanical Engineering

基　　金：国家重点研发计划(2022YFB4301303,2022YFB4301202)。

摘　　要：为抑制电力动车组运行中由异常轮轨匹配产生的车体晃动,提出一种采用半主动转臂节点代替被动式转臂节点的解决方法。设计了具有两级刚度特性的半主动转臂节点并建立其力学模型,推导了具有可变惯性通道的半主动转臂节点复刚度表达式,并通过台架试验验证了力学模型的准确性。基于半主动转臂节点控制策略,建立了半主动转臂节点与车辆动力学的联合仿真模型,分析了不同轮轨匹配状态下半主动转臂节点对车辆动力学性能的影响。结果表明:在低等效锥度轮轨匹配状态下,半主动转臂节点能有效衰减一次蛇行对应速度区间内车体大幅值、低频的横向振动,显著减小车体横向加速度主频处的幅值;正常轮轨匹配状态下,与搭载传统被动转臂节点的车辆相比,搭载半主动转臂节点的车辆有更优的曲线通过能力和更高的临界速度。In order to suppress the swaying of carbody caused by abnormal wheel-rail matching relationships in EMU operation,a semi-active rotary arm joint was proposed to replace the passive rotary arm joint.The semi-active rotary arm joint with two-level stiffness characteristics was designed,and a mechanics model of the semi-active rotary arm joint was established.The complex stiffness expression of semi-active rotary arm joint with variable inertia channel was derived.The accuracy of the model was verified by bench test comparisons.Based on the control strategy of semi-active rotary arm joint,the co-simulation model of semi-active rotary arm joint and vehicle dynamics was established,and the influences of semi-active rotary arm joint on vehicle dynamics performance under different wheel-rail matching relationships was analyzed.The results show that the semi-active rotary arm joint may effectively reduce the high-amplitude and low-frequency swaying of the carbody in speed interval corresponding to primary hunting,and obviously reduce the amplitude at main frequency of lateral acceleration of the carbody under the condition of low-conicity wheel-rail matching.Compared with the vehicle equipped with traditional passive rotary arm joint,the vehicle equipped with semi-active rotary arm joint has better curve passing capacity and higher critical speed under the conditions of normal wheel-rail matching.

关 键 词：电力动车组 变刚度转臂节点 半主动控制 一次蛇行 车辆动力学性能 

分 类 号：U270[机械工程—车辆工程]