论文信息 - COSMAD: a Scilab toolbox for output-only modal analysis and diagnosis of vibrating structures

COSMAD: a Scilab toolbox for output-only modal analysis and diagnosis of vibrating structures

Modal analysis of vibrating structures is a usual technique for design and monitoring in many industrial sectors: car manufacturing, aerospace, civil structures. We present COSMAD a software environment for in-operation situation without any measured or controlled input. COSMAD is an identification and detection Scilab toolbox. It covers modal identification with visual inspection of the results via a GUI or fully automated modal identification and monitoring. The toolbox offers a complete package for signal visualization, filtering and down-sampling, the tracking of frequency and damping over time, mode-shape visualization, MAC computation, etc. The detection part is also a comprehensive toolbox for modal diagnosis and physical localization of faulty components

M. Goursat | L. Mevel

[1] Maurice Goursat,et al. STOCHASTIC SUBSPACE-BASED STRUCTURAL IDENTIFICATION AND DAMAGE DETECTION —APPLICATION TO THE STEEL-QUAKE BENCHMARK , 2003 .

[2] Jean-Claude Golinval,et al. DESCRIPTION OF THE STEELQUAKE BENCHMARK , 2003 .

[3] L. Mevel,et al. Statistical model-based damage detection and localization: subspace-based residuals and damage-to-noise sensitivity ratios , 2004 .

[4] A. Benveniste,et al. Single sample modal identification of a nonstationary stochastic process , 1985, IEEE Transactions on Automatic Control.

[5] Maurice Goursat,et al. On-Line Modal Monitoring of Aircraft Structures Under Unknown Excitation , 1999 .

[6] L. Hermans,et al. MODAL TESTING AND ANALYSIS OF STRUCTURES UNDER OPERATIONAL CONDITIONS: INDUSTRIAL APPLICATIONS , 1999 .

[7] Bart De Moor,et al. N4SID: Subspace algorithms for the identification of combined deterministic-stochastic systems , 1994, Autom..

[8] A. Benveniste,et al. MERGING SENSOR DATA FROM MULTIPLE MEASUREMENT SET-UPS FOR NON-STATIONARY SUBSPACE-BASED MODAL ANALYSIS , 2002 .