Active Steering Control Strategy and Fault-Tolerant Method for Railway Vehicles Based on Bogie Active Yaw Control

A co-simulation model incorporating bogie active yaw control (BAYC) was initially developed using Simpack and Simulink. Subsequent investigation into the active steering control mechanism of railway vehicles, facilitated by this model, delineated the distinctions and interconnections between the two targets of mitigating wheel-rail wear and balancing wheelset lateral force. This elucidation aimed to clarify the preferred control target of the BAYC system. To realize this target, an evaluation of the merits and demerits of two control strategies was conducted across various dimensions. The control effects, control efforts, stability, robustness, and vibration transmission characteristics of different control strategies were then demonstrated. Additionally, discussions ensued concerning the alignment between actuator drifting mode characteristics and the running safety of vehicle, thus furnishing an engineering framework for the implementation of passive fault-tolerant control (FTC). Ultimately, the active FTC following actuator failure was effectuated leveraging the over-drive characteristics inherent to the BAYC system.