C.L. Bottasso, D. Leonello, A. Maffezzoli, F. Riccardi

In this paper we consider the problem of estimating the inertial properties of small-size rotorcraft vehicles. The proposed procedure consists in first subjecting the vehicle to a pendular motion; next, time histories of attitude and angular velocity are obtained by using an inertial measurement unit attached to the vehicle; finally, estimates of the inertia tensor components are obtained by using maximum-likelihood constrained optimization in the time domain. The experimental equipment is extremely simple to realize and of low cost. An important highlight of the proposed approach is that the inertial properties of the vehicle are estimated using specific experimental observations which can be conducted in the laboratory prior to performing flight testing. Hence, flight trials can focus of the sole estimation of the aerodynamic parameters, easing the problem and improving the quality of the estimates. The procedure is first tested in a simulated environment, by artificially creating virtual time histories so as to verify the observability of all parameters. Then, the procedure is validated by using an object of known inertial characteristics. Finally, the document is concluded with the application of the proposed methodology to a small rotorcraft vehicle.

35th European Rotorcraft Forum 2009,

Conference Paper

englisch

21,0 x 29,7 cm, 9 Seiten

DGLR-Bericht, 2009, 2009-03, 35th European Rotorcraft Forum 2009 - Conference Proceedings; S.1-9; 2009; Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V., Bonn

NA

in getr. Zählung;

inertia, uas, rotorcrafts

Bestellbar

2009