Output-only modal analysis : Development of a GUI for MATLAB

In this paper the development of a Graphical User Interface (GUI) for Matlab is described. The simple peak-picking method as well as the more advanced stochastic subspace method are implemented in a user-friendly way. By pushing buttons the user is guided through the whole process of output-only modal analysis: converting measurements to engineering units, preprocessing the data, system identification, extracting modal parameters from a stabilisation diagram, gluing mode shape parts together (typically for output-only modal analysis), animating mode shapes.