RE-ADHESION CONTROL BASED ON WHEELSET DYNAMICS IN RAILWAY TRACTION SYSTEM

This paper demonstrates how wheelset dynamics is affected by wheel-rail contact nonlinearities. Based on vibration phenomena due to wheel slip, two detection methods are proposed, both utilizing wheel speed information. One uses a running FFT to detect spectrum variation of a particular frequency component while the other uses bandpass and low pass filters to obtain magnitude information of the frequency interest. A re-adhesion scheme which is based on slip detection is developed. The simulation results show that this re-adhesion control scheme can detect slip effectively and improve traction stability. Copyright © 2002 USTARTH

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