西南交通大学学报2017，Vol.52Issue(1)：118-126,9.DOI:10.3969/j.issn.0258-2724.2017.01.017
磁悬浮控制器设计及静悬浮稳定性分析
Design of Magnetic Levitation Controller and Static Stability Analysis
摘要
Abstract
In order to realize the stable suspension of the maglev train in the condition of low track beam stiffness,and reduce construction cost of track beam,a electromagnet-elastic-track-carbody model was established based on Newton's second law.Firstly,the vibration information of electromagnet,track beam and carbody was introduced into the control system by the designed state observer;then the feedback gain matrix was obtained using linear matrix inequality.Next,both were utilized for the dynamic simulation by MATLAB to derive the optimal track beam stiffness and quality,which are 200 kN/m and 325 kg,respectively.The analysis results show that compared with the traditional optimal controller based on the Riccati equation,the controller using linear matrix inequality control algorithm achieves a better quadratic performance index.The control strategy is able to realize the system stable suspension at small stiffness and mass of track beam,and stabilize the system after 0.5 seconds or so.The system is robust to some external disturbances.关键词
磁浮列车/轨道梁/磁悬浮控制器/线性矩阵不等式/鲁棒性Key words
maglev train/track beam/magnetic levitation controller/LMI/robustness分类
交通工程引用本文复制引用
汪科任,罗世辉,张继业..磁悬浮控制器设计及静悬浮稳定性分析[J].西南交通大学学报,2017,52(1):118-126,9.基金项目
国家自然科学基金资助项目(11572264)牵引动力国家重点实验室自主研究课题(2016TPL-T07). （11572264）
