Dynamic Analysis of the Maglev Vehicle–Turnout System Considering Spatial Magnetic–Rail Interaction
Source abstract
Abstract
The dynamic performance of medium- and low-speed maglev vehicle–track coupling systems, as well as the dynamic response of the vehicle body and suspension frame under suspension electromagnet failure, is of great significance for the safe operation of maglev tracks. Based on vehicle–track coupling dynamics theory, and considering the spatial dynamic magnetic rail relationship in combination with the suspension control system, a dynamic vehicle–track model incorporating suspension electromagnet failure is established. The effect of such failures on electromagnet suspension force and overall vehicle performance are analyzed. The results indicate that the theoretically calculated electromagnetic force differs significantly from the actual force. Under four electromagnet operating conditions, lateral displacement has the greatest influence on suspension force. By considering the magnetic saturation of ferromagnetic materials and the leakage effect of suspension gaps, a spatial dynamic magnetic orbit relationship is established. A single-pole suspension electromagnet fault has little effect on overall vehicle performance. When the suspension electromagnet on one side fails, the suspension frame tilts toward that side and is supported and operated by a sled. When three suspension points fail, the entire suspension frame loses its suspension state and operates fully under sled support. When a suspension frame electromagnet becomes stuck, severe fluctuations in suspension force and vehicle vibration acceleration occur. These fluctuations increase with vehicle operating speed, seriously endangering operational performance. The findings provide a fundamental theoretical basis for the safe operation and maintenance of medium- and low-speed maglev vehicles under fault conditions.
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Research context
OpenAlex topics: Magnetic Bearings and Levitation Dynamics · Railway Engineering and Dynamics · Electrical Contact Performance and Analysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Mechanical Engineering, Lanzhou Jiao Tong University, Lanzhou 730070, China
State Key Laboratory of High-Speed Maglev Transportation Technology of CSR Qingdao Sifang Locomotive and Rolling Stock Co., Ltd., Qingdao 266000, China
School of Mechanical and Electrical Engineering, Xi’an Traffic Engineering University, Xi’an 710300, China
Funding
National Natural Science Foundation of China · Natural Science Foundation of Gansu Province · General Project of Joint Research Foundation of Gansu Province · State Key Laboratory of High-speed Maglev Transportation Technology
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Show source-provided references
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