摘要
相比于纯电磁悬浮系统,混合悬浮系统由于增加了不可控的永磁体,其控制难度增加,且更容易发生吸死状况。本文针对混合悬浮系统的控制性能展开研究。首先,基于混合悬浮电磁铁结构建立其数学模型,利用有限元仿真软件对数学模型进行修正,得到更与实际情况相贴合的数学模型。其次,对系统运动方程进行线性化处理,建立了系统的传递函数,并进行稳定性分析。最后,分别建立PID和模糊PID控制器,并通过SIMULINK模块进行仿真。结果表明,两种控制器均能实现稳定悬浮,但模糊PID控制器超调量更低、防吸死性能更佳,具有更优的控制性能。
Compared with the pure electromagnetic suspension system,the hybrid suspension system is more difficult to control due to the addition of uncontrollable permanent magnets,and is more prone to suction death conditions.The control performance of hybrid suspension system is studied in this paper.Firstly,the mathematical model is established based on the structure of hybrid suspension electromagnet,and the finite element simulation software is used to modify the mathematical model to get a more realistic mathematical model.Secondly,the motion equation of the system is linearized,the transfer function of the system is established and its stability is analyzed.Finally,the PID and the fuzzy PID controllers are established respectively and simulated by the SIMULINK module.The results show that both controllers can achieve stable suspension,but the fuzzy PID controller has better control performance with lower overshoot and better anti-suction death performance.
作者
卢相宇
马卫华
罗世辉
刘清辉
LU Xiangyu;MA Weihua;LUO Shihui;LIU Qinghui(State Key Laboratory of Traction Power,Southwest Jiaotong University,Chengdu 610031,China)
出处
《机械》
2023年第1期1-8,共8页
Machinery
基金
国家自然科学基金面上项目(51875483)
牵引动力国家重点实验室自主研究课题(2020TPL_T04)。
