Example of formulation of autonomous algorithms used in procedure of modal parameter estimation

The paper deals with experimental modal analysis used in engineering practice for investigation of structural dynamics of machines, buildings, civil engineering objects, vehicles, air- and spacecrafts as well as ships. The main scope of the research was focused on stabilization diagram processing and modal model consolidation algorithms being parts of the parameter estimation stage of the identification procedure of a considered system. Formulated algorithms of the stabilization diagram processing that use statistical indicators or fuzzy reasoning are presented in the paper. Next, a modal model consolidation algorithm that aims at the determination of the best estimate of each of the identified system poles from a set of its estimates obtained from a series of estimation procedures is described. The algorithm applies statistical measures of the distribution of modal parameters. Finally, examples of application of the formulated algorithms to real data are reported.