Aircraft Motion Decoupling of Roll and Yaw Dynamics Using Generalized Dynamic Inversion Control

Abstract

In this paper, Generalized Dynamic Inversion (GDI) control methodology for linear state equality constraints is proposed for independent motion control of an aircraft along the roll and the yaw axes. In GDI control, dynamic constraints are defined based on the roll and yaw attitude deviation functions and are inverted using Moore Penrose Generalized Inverse (MPGI) to realize the control law. In the particular part of GDI control, constraint differential equation is formulated for the yaw channel, where as the constraint dynamics for the roll axis is constructed by using the involved null control in the auxiliary control part of GDI. The two noninterference control actions is a key advantage of GDI control, and it provides extra degree of design freedom. Numerical simulations are conducted on the lateral dynamics of a transport aircraft to demonstrate the motion decoupled tracking performance of the proposed control strategy.