Lai Wei

Analysis of abnormal low-frequency lateral carbody sway in metro vehicles induced by alternating side wear of rails

Low-frequency carbody sway in the range of 2–3 Hz is a recurrent abnormal vibration phenomenon in metro systems, degrading ride comfort and operational stability. Field observations indicate that this vibration is concentrated in specific line sections and is closely associated w...

Hopf bifurcation characteristics of high-speed railway bogies under regularized sliding mode control

Sliding mode control (SMC) has been extensively investigated for the stability control of active suspension systems in high-speed trains due to its robustness and rapid response to complex disturbances. However, existing studies remain largely performance-oriented, with insuffici...