Fast computation of uncertainty lower bounds for state-space model-based operational modal analysis

• Main Authors: Shi, Yuanfeng, Li, Binbin, Au, Siu-Kui
• Other Authors: School of Civil and Environmental Engineering
• Format: Article
• Language: English
• Published: 2022
• Subjects: Engineering::Civil engineering; Operational Modal Analysis; Uncertainty Quantification; Cramer-Rao Bound; Maximum Likelihood Estimator; State-Space Model
• Online Access: https://hdl.handle.net/10356/154692
• Institution: Nanyang Technological University

In operational modal analysis, identified modal parameters, e.g., natural frequencies, damping ratios, and mode shapes, are subject to uncertainties due to effects such as limited data, measurement noise, modelling error and unknown excitations. It becomes relevant to quantify the associated uncerta...