Research on static levitation stability of medium-low speed maglev vehicle on low-lying track

Abstract

The levitation vibration characteristics of medium-low speed maglev vehicles differ between elevated and low-lying tracks. The elevated tracks are predominantly studied in existing literature, while low-lying tracks receive limited attention. Consequently, investigating the levitation vibration characteristics of medium-low speed maglev vehicles on low-lying tracks and identifying methods to achieve stable levitation is meaningful for evaluating vehicle performance. This paper presents a co-simulation model that integrates real levitation control models, a detailed multi-body vehicle dynamics model, and a finite element model of the low-lying track. Based on established levitation control theory, a method for adjusting levitation control parameters is proposed. The model’s reliability and the effectiveness of the proposed method are validated through simulations and comparisons with subsequent tests. Additionally, the findings indicate that the vibration transmission rate between the F-rail and the vehicle on low-lying tracks exceeds 20 times, providing valuable reference data for the design of the low-lying track.