Sections of railway line associated with variations in track stiffness often have an increased maintenance requirement owing to the relatively rapid deterioration of track geometry. Variations in stiffness could arise from changes in ground conditions, transitions from free track onto a fixed structure and other localised features. Increased dynamic loads may be responsible for track degradatio...

This paper describes the application of a novel band-pass sliding mode control (SMC) to the driving mode of MEMS-based resonators and resonant sensors (e.g. vibrating gyroscopes). The proposed technique relies on binary electrostatic actuation of the movable mass, dependent on the dynamics of the sliding/switching surface, in such a way that the generated actuation tracks possible changes in th...

PURPOSE To track variations in the deformation of the arterial wall noninvasively by estimating the accumulated displacement and strain over a cardiac cycle may provide useful indicators of vascular health. METHODS In this paper, we propose an approach to track a region of interest (ROI) locally and estimate arterial stiffness variation in a familial hypercholesterolemic swine model of sponta...