Anti-skid re-adhesion control using tangential force estimator based on disturbance observer for electric commuter train

This work proposes a new anti-skid re-adhesion control based on disturbance observer considering the air brake for electric commuter train. We have already proposed the anti-skid re-adhesion control with regenerative braking system based on disturbance observer. This proposed method has been the re-adhesion control using only regenerative braking mode. However, actual train uses both electric brake and air brake in the high-speed range. Hence, This work proposes a new anti-skid re-adhesion control considering the air brake, which carries out cooperation control of electric brake and air brake in order to realize a fine re-adhesion control. The numerical simulation results point out that the proposed system has the desired driving wheel torque response and a fine anti-skid re-adhesion control.

I. INTRODUCTION

The characteristic of tangential force coefficient is strongly affected by the conditions between rails and driving wheels. The drive system of electric commuter train is requested to have the robust and advanced anti-slip/skid control system. In order to overcome this problem, we have already proposed a new anti-slip/skid re-adhesion control system of electric commuter train, which is based on disturbance observer and speed sensor-less vector control. The experimental results and numerical simulation results point out that the proposed anti-slip/skid re-adhesion control system has the desired driving wheel torque response for both the tested bogie system of electric commuter train and the electric multiple units Series 205–5000 of East Japan Railway Company [1] [2] [3] [4] [5].