Observatorio de I+D+i UPM

Descripción
In Operational Modal Analysis of a structure, the data acquisition process may be repeated many times. In these cases, the analyst has several similar records for the modal analysis of the structure that have been obtained at different time instants (multiple records). The solution obtained varies from one record to another, sometimes considerably. The differences are due to several reasons: statistical errors of estimation, changes in the external forces (unmeasured forces) that modify the output spectra, appearance of spurious modes, etc. Combining the results of the different individual analysis is not straightforward. To solve the problem, we propose to make the joint estimation of the parameters using all the records. This can be done in a very simple way using state space models and computing the estimates by maximum-likelihood. The method provides a single result for the modal parameters that combines optimally all the records.
Internacional	Si
Nombre congreso	11th International Conference on Recent Advances in Structural Dynamics
Tipo de participación	960
Lugar del congreso	Pisa, Italia
Revisores	Si
ISBN o ISSN	9780854329649
DOI
Fecha inicio congreso	01/07/2013
Fecha fin congreso	03/07/2013
Desde la página	120
Hasta la página	132
Título de las actas	Proceedings of the 11th International Conference on Recent Advances in Structural Dynamics

Esta actividad pertenece a memorias de investigación

• Autor: Francisco Javier Cara Cañas (UPM)
• Autor: Enrique Alarcon Alvarez (UPM)
• Autor: Jesus Juan Ruiz (UPM)

• Creador: Grupo de Investigación: Ingeniería Sísmica: Dinámica de Suelos y Estructuras
• Grupo de Investigación: Estadística computacional y Modelado estocástico
• Departamento: Ingeniería de Organización, Administración de Empresas y Estadística