Assessment of fault tolerance for actively controlled railway wheelset

This paper studies the key issue of fault tolerance for actively controlled railway wheelsets. It assesses failure modes in such systems, with a focus on actuator failures, and consequence of those hardware failures. It seeks to establish the necessary basis for control reconfiguration to ensure system stability and performance in the event of a faulty, without the need for hardware redundancies. A number of control schemes (with and without faults) are included in the study. Both analytical and simulation results are presented.