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

作者：Wang, Lianchun; Li, Jinhui; Zhou, Danfeng; Li, Jie

来源：Applied Sciences-Basel, 2017, 7(1): 38.

DOI：10.3390/app7010038

• maglev
• levitation system
• bridge
• self-excited vibration
• energy

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 y(E) and bridge y(B) in pairs are explored. The results indicate that removing the feedback of the bridge's displacement y(B) from the pairs (y(E) - y(B)) 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 y(E) 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.

• 出版日期2017-1
• 单位中国人民解放军国防科学技术大学