System identification uncertainty quantification using orthogonal excitations the Semi-span SuperSonic Transport (S~4T) model

摘要

Orthogonal harmonic multisine excitations were utilized in a wind tunnel test and in simulation, of the SemiSpan Supersonic Transport model to assess aeroservoelastic characteristics. Fundamental issues associated with analyzing sinusoidal signals were examined, including spectral leakage, excitation truncation, and uncertainties on frequency response functions and mean-square coherence. Simulation allowed for evaluation of these issues relative to a truth model, while wind tunnel data Introduced real-world implementation issues.