Measurement of the Lateral Displacement of the Wheel-Rail based on the Vision Sensor

초록

This paper describes the design and implement of a real-time vision system for active steering of a railway vehicle to detect a lateral displacement between wheel and rail. Active steering bogie of railway vehicles has proven its ability to bridge the gap between stability and curve friendliness. This system consists of one actuator, a controller, and sensors to detect lateral displacement, track disturbance, and track curvature. The vision sensor is applied to digital image processing techniques for detecting wheel/rail displacement in active steering bogie in various dynamic environments. Running test results show that our vision based lateral displacement measurements are accurate in each sampling rate, and make it a sensor to be placed in the active steering control systems.