An Experimental Validated Control Strategy of Maglev Vehicle-Bridge Self-Excited Vibration

Applied Sciences

Danfeng Zhou¹  Jinhui Li¹  Jie Li¹  Lianchun Wang¹ 

[1] College of Mechatronics Engineering and Automation, National University of Defense Technology, Changsha 410073, China;

关键词: maglev;    levitation system;    bridge;    self-excited vibration;    energy;   

DOI  :  10.3390/app7010038

来源: DOAJ

【 摘 要 】

This study discusses an experimentally validated control strategy of maglev vehicle-bridge vibration, which degrades the stability of the suspension control, deteriorates the ride comfort, and limits the cost of the magnetic levitation system. First, a comparison between the current-loop and magnetic flux feedback is carried out and a minimum model including flexible bridge and electromagnetic levitation system is proposed. Then, advantages and disadvantages of the traditional feedback architecture with the displacement feedback of electromagnet yE and bridge yB in pairs are explored. The results indicate that removing the feedback of the bridge’s displacement yB from the pairs (yE − yB) measured by the eddy-current sensor is beneficial for the passivity of the levitation system and the control of the self-excited vibration. In this situation, the signal acquisition of the electromagnet’s displacement yE is discussed for the engineering application. Finally, to validate the effectiveness of the aforementioned control strategy, numerical validations are carried out and the experimental data are provided and analyzed.

【 授权许可】

Unknown