永磁悬浮轨道侧向力控制系统的DMC-PID控制策略  

The DMC-PID control strategy of the lateral force control system of permanent magnetic levitation track

作　　者：过振宇 杨杰[1] GUO Zhenyu;YANG Jie(School of Electrical Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,China)

机构地区：[1]江西理工大学电气学院,江西赣州341000

出　　处：《铁道科学与工程学报》2021年第6期1373-1381,共9页Journal of Railway Science and Engineering

基　　金：国家自然科学基金资助项目(61763016)。

摘　　要：针对永磁悬浮轨道弯道侧向力控制系统的大惯性、纯滞后以及非自衡等特点,提出一种DMC-PID串级控制的永磁悬浮侧向力控制策略。结合PID的快速响应能力和DMC预测控制的抗干扰能力强优点,二者优势互补。对比传统PID控制策略、DMC-PID串级控制策略在永磁悬浮侧向力控制系统中的动态性能。仿真结果表明:DMC-PID串级控制策略较传统PID控制策略控制效果更优,具有侧向力波动更小、调节时间更短以及响应速度更快等优点,表现出良好的跟随性和抗干扰能力。在永磁悬浮列车转弯时,采用DMC-PID串级控制策略能够较快通过控制数字液压缸的伸缩使得车载磁体与磁轨磁体对中,侧向力趋近于目标值0 N,较大程度提高永磁悬浮列车的平稳性。Aiming at the characteristics of large inertia,pure hysteresis and non-self-balance of the permanent magnet levitation track curve lateral force control system,a DMC-PID cascade control permanent magnet levitation lateral force control strategy was proposed.Combining the rapid response capability of PID and the strong anti-interference capability of DMC predictive control,the two have complementary advantages.Compare the dynamic performance of traditional PID control strategy and DMC-PID cascade control strategy in permanent magnet levitation lateral force control system.The simulation results show that the DMC-PID cascade control strategy has a better control effect than the traditional PID control strategy.It has the advantages of smaller lateral force fluctuations,shorter adjustment time and faster response speed,showing good followability and antiinterference ability.When the permanent magnet levitation train is turning,the DMC-PID cascade control strategy can quickly control the expansion and contraction of the digital hydraulic cylinder to make the vehicle magnet and the magnetic track magnet align,and the lateral force approaches the target value 0N,which greatly improves the lateral stability of the permanent magnet levitation train。

关 键 词：永磁悬浮轨道 侧向力 数字液压缸 DMC-PID串级控制 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]