RT info:eu-repo/semantics/article
T1 Measurement of acceleration response functions with scalable low-cost devices. An application to the experimental modal analysis
A1 Magdaleno González, Álvaro
A1 Villacorta Calvo, Juan José
A1 Val Puente, Lara del
A1 Izquierdo Fuente, Alberto
A1 Lorenzana Ibán, Antolín
K1 Microelectrónica
K1 Circuitos electrónicos
K1 Lingüística Informática
K1 myRIO platform
K1 Non-destructive testing
K1 MEMS accelerometers
K1 Plataforma myRIO
K1 Pruebas no destructivas
K1 Acelerómetros MEMS
K1 3328 Procesos Tecnológicos
K1 3307.90 Microelectrónica
AB One of the most popular options in the Structural Health Monitoring field is the tracking of the modal parameters, which are estimated through the frequency response functions of the structure, usually in the form of accelerances, which are computed as the ratio between the measured accelerations and the applied forces. This requires the use of devices capable of synchronously recording accelerations at several points of the structure at high sampling rates and the subsequent computational analysis using the recorded data. To this end, this work presents and validates a new scalable acquisition system based on multiple myRIO devices and digital MEMS (Micro-Electro-Mechanical System) accelerometers, intended for modal analysis of large structures. A simple form of this system was presented by the authors in a previous work, showing that a single board with some accelerometers connected to it got to obtain high quality measurements in both time and frequency domains. Now, a larger system composed by several slave boards connected and synchronized to a master one is presented. Delays lower than 100 ns are found between the synchronised channels of the proposed system. For validation purposes, a case study is presented where the devices are deployed on a timber platform to estimate its modal properties, which are compared with the ones provided by a commercial system, based on analog accelerometers, to show that similar results are obtained at a significantly lower cost.
PB MDPI
YR 2021
FD 2021
LK https://uvadoc.uva.es/handle/10324/59323
UL https://uvadoc.uva.es/handle/10324/59323
LA eng
NO Sensors, 2021, vol. 21, n. 19, 6637
NO Producción Científica
DS UVaDOC
RD 22-nov-2024