A distributed low cost device for the remote observation of track and vehicle interactions
MetadataShow full item record
In the case of a railway wagon running on track, irregularities in the track formation can lead to complex dynamic interactions. Experience has shown that track geometry alone is not a good predictor of vehicle response and that adverse vehicle responses can occur on track sections with geometry measurements that do not trigger maintenance actions.This paper describes a "health card" which is an autonomous solar powered device that can be placed on rolling stock to capture vehicle responses. Health cards make use of an algorithm which autonomously analyses signals from accelerometers mounted on the wagon body, to detect and classify the dynamic interaction of the track and the rail vehicle.The algorithm presented resolves the wagon body motions into five degrees of freedom, applies Spectrogram techniques to obtain a time-frequency representation, and autonomously analyses the representation to detect and classify transient dynamic events from wagon body motions. Although sensing at the wagon body provides a limited measurement of the wagon system, the results of this research is useful for systems requiring minimal or low cost installation. The algorithm is developed and validated using field data including accelerations measured at strategic points on the wagon body and the bogies.
Showing items related by title, author, creator and subject.
Shafiullah, G.; Simson, S.; Thompson, A.; Wolfs, Peter; Ali, S. (2008)Wireless communications and modern machine learning techniques have jointly been applied in the recent development of vehicle health monitoring (VHM) systems. The performance of rail vehicles running on railway tracks is ...
Grey box-based inverse wagon model to predict wheel-rail contact forces from measured wagon body responsesXia, F.; Cole, C.; Wolfs, Peter (2008)A grey box-based inverse wagon model was developed to estimate wheel-rail contact forces using only measurements of wagon body responses as inputs. The project is based on a similar application using a deterministic inverse ...
Xia, F.; Cole, C.; Wolfs, Peter (2007)An inverse wagon model was developed to estimate wheel-rail contact forces using only measurements of wagon body responses as inputs. The purpose of this work was to provide mathematical modelling to embed in low-cost ...