Dynamics modeling and control of large transport aircraft in heavy cargo extraction

Key words:  Cargo extraction  Transport aircraft  Flight dynamic model  Equilibrium  Interval system  Robust control

摘要:

Abstract:

In this paper, a novel version of six-degree-of-freedom nonlinear model for transport aircraft motion in cargo extraction is developed and validated by the theoretical mechanics and flight mechanics. In this model constraint force and moment reflecting the flight dynamic effects of inner moving cargo are formulated. A methodology for a control law design in this phase is presented, which linearizes the aircraft dynamics making use of piecewise linearization and utilizes robust control technique for interval system to achieve specified handling qualities with robustness to uncertainties. The simulations demonstrate adequate effectiveness and excellent robustness of the proposed controller.