高温超导磁浮车直线电机悬挂系统主动控制  

Active control of linear motor suspension systems in high-temperature superconducting maglev trains

作　　者：郑杰[1] 邓斌[1] 邓自刚[2] 何沛恒 李强[1] ZHENG Jie;DENG Bin;DENG Zigang;HE Peiheng;LI Qiang(School of Mechanical Engineering,Southwest Jiaotong University,Chengdu,Sichuan 610031,China;State Key Laboratory of Rail Transit Vehicle System,Southwest Jiaotong University,Chengdu,Sichuan 610031,China)

机构地区：[1]西南交通大学机械工程学院,四川成都610031 [2]西南交通大学轨道交通运载系统全国重点实验室,四川成都610031

出　　处：《机车电传动》2024年第5期132-138,共7页Electric Drive for Locomotives

基　　金：西南交通大学学科交叉研究专项(2682021ZTPY109)。

摘　　要：高温超导磁浮列车在运行过程中会受到轨道随机不平顺及直线电机法向力的影响,导致车体、磁浮架和电机的振动耦合,电机的振动会引起气隙变化,进一步导致法向力的变化,变化后的法向力反作用于电机悬挂系统,影响磁浮架和车体振动。为了减少因电机气隙变化,文章在电机动子与磁浮架之间添加悬挂系统,同时将主动控制技术应用在悬挂系统上,建立了带主动控制器的高温超导磁浮车动力学理论模型,以轨道随机不平顺和电机法向力作为外部激励,在MATLAB/Simulink中使用PID和Fuzzy-PID控制器对电机动子动态响应进行了仿真,并与被动悬挂系统进行了比较,验证了控制方法的可行性。仿真结果表明,相比于被动悬挂系统,使用两种控制方法能够较好抑制电机气隙波动,且Fuzzy-PID的控制效果要明显优于PID控制。该方法为直线电机振动抑制提供了新思路,并通过仿真验证了该方法的可行性。High-temperature superconducting(HTS)maglev trains are subjected to random track irregularities and normal forces from onboard linear motors during operation,leading to vibrational coupling among the train bodies,maglev frames,and motors.These motor vibrations cause changes to the air gap,which in turn result in variations in the normal forces.The altered normal forces react on the motor suspension systems,affecting the vibrations of both the maglev frames and the train bodies.A dynamic model was established for HTS maglev trains equipped with an active controller.This model incorporated an additional suspension system between the motor rotor and the maglev frame to mitigate the effects of air gap variations,and introduced an active control technique to the suspension sys-tem.Under external excitations composed of random track irregularities and normal forces from the linear motor,the dynamic responses of the motor rotor were simulated using MATLAB/Simulink with both PID and Fuzzy-PID controllers.Comparisons were made with pas-sive suspension systems to verify the feasibility of the proposed control approach.Simulation results show that,compared to passive sus-pension systems,both control methods effectively suppressed air gap fluctuations in the motor,with Fuzzy-PID demonstrating signifi-cantly better control performance than PID.This approach offers a novel solution for suppressing linear motor vibrations,and its feasibili-ty has been confirmed through simulations.

关 键 词：高温超导磁浮 直线电机悬挂系统 气隙波动 主动控制 FUZZY-PID控制器 磁浮列车 

分 类 号：U237[交通运输工程—道路与铁道工程]