TRACKING THE MODAL PARAMETERS OF TIME-VARYING STRUCTURES BY REGULARIZED NONPARAMETRIC ESTIMATION AND OPERATIONAL MODAL ANALYSIS Vrije Universiteit Brussel
This paper presents an efficient nonparametric time-varying (TV) system identification method combined with mode tracking for Operational Modal Analysis (OMA). OMA is a special identification technique for estimating the modal properties of structures based on vibration data collected under real operating conditions and without having access to the excitation signals. The time-varying aspect refers to cases where the structural dynamic behavior ...