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Appl. Sci. 2017, 7(1), 38;

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

College of Mechatronics Engineering and Automation, National University of Defense Technology, Changsha 410073, China
Scinence and Technology on Near-Surface Detection Laboratory, Wuxi 214035, China
Author to whom correspondence should be addressed.
Academic Editors: Gangbing Song, Steve C.S. Cai and Hong-Nan Li
Received: 12 October 2016 / Revised: 23 December 2016 / Accepted: 23 December 2016 / Published: 4 January 2017
PDF [3122 KB, uploaded 4 January 2017]


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 (yEyB) 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. View Full-Text
Keywords: maglev; levitation system; bridge; self-excited vibration; energy maglev; levitation system; bridge; self-excited vibration; energy

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Wang, L.; Li, J.; Zhou, D.; Li, J. An Experimental Validated Control Strategy of Maglev Vehicle-Bridge Self-Excited Vibration. Appl. Sci. 2017, 7, 38.

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