Clearance of a small scale remotely piloted aircraft by means of a polynomial based analysis method

In this paper an overview on polynomial based analysis methods for application to robust stability of linear systems subject to uncertain parameters is presented. A comparison among the most important Kharitonov type approaches proposed in literature and their applicability to the flight control law clearance problem of highly augmented aircraft is also discussed. A novel algorithm is then proposed, which can deal with high order uncertain dynamic aircraft models within reasonable computation time by introducing some degree of approximation in determining the clearance region´s shape. Application to robustness analysis of an augmented small scale unmanned aircraft is finally presented, whose uncertain high order open loop dynamic model has been tuned with inflight experimental data.