Study on Detection of Signs of Wheel-Climb Derailment for Railway Vehicle(Mechanical Systems)

In this paper, a novel of detecting signs before wheel-climb derailment in scaled experiment is examined, and it is dedicated to the early signs detection of derailment for railway vehicles discussing a sensing method and a detecting algorithm for reducing the damage and aiming to avoid the happening of the derailment accident in advance. A scaled model of railway vehicle including one car body and two trucks as well as an original device that could simulate various wheel climb derailments only for the selective wheel were designed and made. Based on several patterns of derailment experiments, an algorithm for detecting signs of derailment beforehand was proposed. It was found and verified that the peak threshold of pitch angular rate and the integral threshold of roll angular rate of truck flame could be possible to detect signs before the wheel-climb derailment all the time during driving.