A study of adhesion force model for wheel slip prevention (examination by beam model)

Abstract

In order to enhance the speed of wheel slip prevention control for railway vehicles, modeling of adhesion characteristics after saturation of adhesion force, which had hitherto not been performed with trains, was performed via a beam model. The behavior of adhesive force between the wheel and rail in a wet condition was examined with a brake performance test stand for an actual vehicle. Results of comparing the model and test values indicated that the beam model represented test values well. We propose the disturbance observer to estimate adhesion force. The disturbance observer was effective in estimating adhesion force that is difficult to measure directly.