Regularized Integration for Low-Speed Track Irregularity Measurement in EMS Maglev System

作者：Mingbo Liu, Guofeng Zeng, Ziping Han, Xin Liang · 年份：2025 · DOI：10.1109/itsc60802.2025.11423795 · 研究领域：Magnetic Bearings and Levitation Dynamics、Electric Motor Design and Analysis、Machine Fault Diagnosis Techniques

Track irregularities are a critical factor affecting the safety and stable operation of high-speed maglev systems. Track irregularities not only lead to unstable vehicle motion but also impact passenger comfort. Therefore, track irregularity measurement is crucial for ensuring efficient and safe operation. However, under low-speed onboard inspection conditions, traditional inertial-based methods for track irregularities face several challenges. Due to low signal-to-noise ratios and interference from system characteristics, existing methods struggle to provide precise and reliable track irregularity data. To overcome these limitations, this paper proposes a noiserobust integration method. The method employs frequencydomain regularization techniques to suppress signal drift and modal amplification while preserving key features of the track's structural response. By reducing the influence of interfering factors, it ensures the accuracy and robustness of track irregularity reconstruction, making it suitable for low-speed onboard inspection environments. To validate the proposed method, sensitivity evaluations of control parameters and external noise were conducted using a single bogie model, along with low-speed operational measurement data.