System Identification of a Circulation Control UAV Using X-Plane Flight Simulation Software and Flight Data

摘要

This paper presents a system identification method using simulation and flight data to derive a mathematical model for a small-scale fixed-wing Circulation Control UAV (UC~2AV). Longitudinal dynamic models of the RMRC Anaconda UAV and the UC~2AV have been obtained using the X-Plane flight simulation software and CIFER flight identification software. Longitudinal stability and control derivatives that show the relationship between control surface deflection angles and the pitching moment have been derived. Flight tests of the UC~2AV with the Circulation Control system active are conducted to capture the effect of Circulation Control on the models and adjust the models accordingly. Verification experiments demonstrate good match between model and aircraft (RMS error < 1.4) and good model predictive ability (Theil inequality coefficient is < 0.19).