URDA GÓMEZ , Pedro

Los datos presentados se corresponden con distintas campañas experimentales llevadas a cabo por el grupo de investigación de dinámica ferroviaria de la Universidad de Sevilla, RAILDYNUS. Los ensayos se corresponden con el recorrido de un vehículo ferroviario denominado "Bogie 2021", a lo largo de una vía a escala que posee el grupo de...

Los datos presentados se corresponden con distintas campañas experimentales llevadas a cabo por el grupo de investigación de dinámica ferroviaria de la Universidad de Sevilla, RAILDYNUS. Los ensayos se corresponden con el recorrido de un vehículo ferroviario denominado "Bogie 2018", a lo largo de una vía a escala que posee el grupo de...

Se presenta los resultados obtenidos tras la medida geométrica de la vía a escala. Tras un procedimiento experimental que comprende el uso de una estación total, inclinómetro y sensor de distancia, se ha obtenido la medida de referencia de la vía, así como las irregularidades asociadas. Todos los datos de la vía a escala se pueden consultar en...

Los datos presentados se corresponden con distintas campañas experimentales llevadas a cabo por el grupo de investigación de dinámica ferroviaria de la Universidad de Sevilla, RAILDYNUS. Los ensayos se corresponden con el recorrido de un vehículo ferroviario denominado "Vehículo auscultador", a lo largo de una vía a escala que posee el grupo de...

El desarrollo de esta tesis se centra en la medici on experimental de fuerzas de contacto rueda carril en un veh culo ferroviario a escala 1 : 10. Para ello, el autor ha dise~nado y fabricado un eje dinamom etrico instrumentado con multiples sensores para la medici on directa de las fuerzas aplicadas en las ruedas. Para la instrumentaci on del...

En este Trabajo Fin de Máster se ha llevado a cabo la construcción de un modelo de sistema multicuerpo de un vehículo eléctrico a control remoto que de aquí en adelante será denominado Róver. Dicho vehículo ha sido equipado con una serie de sensores inerciales que permitirán recoger medidas experimentales para validar el modelo de sistema...

This paper describes the kinematics used for the calculation of track geometric irregularities of a new Track Geometry Measuring System (TGMS) to be installed in railway vehicles. The TGMS includes a computer for data acquisition and process, a set of sensors including an inertial measuring unit (IMU, 3D gyroscope and 3D accelerometer), two...

The actual trend of railway industry on track surveying is heading up the development of fast automated methods for continuous monitoring of track quality. This paper presents a model-based methodology for the estimation of lateral and vertical track irregularities from different sensors mounted on a Track Recording Vehicle (TRV): an Inertial...

In this work, the orientation of a railway is estimated with a novel methodology based on multibody system kinematics using the railway-specific track frame. The proposed method improves the prediction model by considering the translational accelerations due to the track negotiation. To this end, the forward velocity of the vehicle, measured...

The aim of this work is to develop a model-based methodology for monitoring lateral track irregularities based on the use of inertial sensors mounted on an in-service train. To this end, a gyroscope is used to measure the wheelset yaw angular velocity and two accelerometers are used to measure lateral acceleration of the wheelset and the bogie...

This paper describes a new numerical procedure for the modelling and simulation of the wheel–rail contact in railway dynamic simulations. The method is called knife-edge-equivalent contact constraint method, or simply KEC-method. Using this method, the wheel–rail contact is modelled as rigid or constraint-based using a set of kinematic...

The aim of this work is the development of a model-based methodology for the estimation of lateral track irregularities from measurements from different sensors mounted on an in-service vehicle: a gyroscope to measure wheelset yaw angular velocity, two accelerometers to measure lateral acceleration of the wheelset and bogie frame, and an...

In this paper, a multibody dynamic model of a railway vehicle that assumes that vertical and lateral dynamics are weakly coupled, has been experimentally validated using an instrumented scaled vehicle running on a 5-inch-wide experimental track. The proposed linearised model treats the vertical and lateral dynamics of the multibody system...

This paper describes a novel method for the estimation of the trajectory and orientation of a rigid body moving along a railway track. Compared to other recent developments in the literature, the presented approach has the significant advantage of using inertial sensors only, excluding global position and orientation sensors. The excluded...

Sistema y método de medida de geometría de vías (SMGV), para identificar y cuantificar irregularidades en una vía (1), donde el sistema comprende una estructura (2) rígida, para acoplarse a un medio de desplazamiento externo por la vía (1); un módulo de visión (3) para capturar imágenes de los carriles de la vía (1) durante un desplazamiento de...

This paper presents a method for the experimental measurement of the lateral wheel-rail contact force based on Artificial Neural Networks (ANN). It is intended to demonstrate how an Artificial Intelligence (AI) method proves to be a valid alternative to other approaches based on sophisticated mathematical models when it is applied to the...

In the field of railroad dynamics, multibody models used for on-board state observation, parameter identification and track geometry measurement must ensure a high computational efficiency, particularly when real-time simulations are required. In this paper, a simplified model based on the assumption of weakly coupled lateral and vertical...

This paper presents the design, construction and experimental validation of a scaled railway vehicle for the automated and quick survey of the geometry of an experimental scaled track. The method, that can be extended to full scale tracks, validates the measurements of the automated recording vehicle (ARV) by comparison with respect to a...

This paper presents a rigid contact approach to analyse the two-point wheel-rail contact scenario using the simplified constraint-based contact method called Knife-edge Equivalent Contact method (KEC-method). The proposed approach makes use of the computationally efficient online solution of the KEC constraints, where a single-point rail is in...

In this paper, a 1 : 10 scaled dynamometric wheelset is presented. It has been equipped with two different technologies: strain gauges and distance lasers. The first one is based on the measurement of the wheel deformation with strain gauges and the second one on the measurement of the wheel web deflection with high precision distance lasers....

A model-based methodology for the estimation of both lateral and vertical track irregularities is presented. This methodology, based on Kalman filter techniques, was developed for an independent and compact measuring system comprising an instrumented axle equipped with a limited set of low-cost sensors: a 3D gyroscope, a linear variable...

The objective of this article is to present the design and manufacture of a scaled railroad track to be used as a laboratory track for the study of different railway applications. It could be a guideline for future laboratory railroad tracks. The ideal concept was based on possible future studies and, according to them, design requirements have...