Estimtion of aeroelastic models in structural limit-cycle oscillations from test data

摘要

An optimal estimation algorithm to identify aeroelastic models in structural limit-cycle oscillations (LCO) is developed. This algorithm is based on an optimal estimation theory with a continuous cost function to minimize the difference between the estimates and data. The optimality equations are reformulated in the frequency domain through Beecham-Titchener's averaging technique. The resulting equations are then solved by a finite difference method.