Author(s)

Ricardo F.M. de Andrade, Carlos Magluta and Ney Roitman

Abstract

— The present paper treats with the development of a system for estimating the Frequency Response Functions (FRFs) using Multiple Input Multiple Output (MIMO) Technique. The system was developed using Lab VIEW software (Laboratory Virtual Instrument Engineering Workbench), which uses a graphical programming language, and includes libraries for data acquisition, instrument control, data analysis and data presentation. Results of experimental tests carried on a prototype of a simply supported beam were used to test the developed system. Experimental tests were also carried on a small scale model of an offshore platform using two orthogonal simultaneous random excitations. The response of 32 accelerometers were measured, and the obtained FRFs between all acceleration responses

Keywords