Command Governor strategies to increase safety and comfort on aircrafts

This paper focuses on constrained control problems based on Command Governor (CG) approach. The CG is a device which is added a to a primal compensated system; its action consists in modifying, whenever necessary, the reference signal supplied to the system, in order to enforce prescribed constraints with acceptable tracking performance. Here, we present an application of the CG strategy to a small commercial aircraft. To show the benefits of the proposed constrained control algorithm, numerical simulations are carried out on a linearized model of the aircraft in the neighborhood of an operating flight condition, taking into account typical constraints which the aircraft is subject to satisfy (i.e. angle of attack and angular rates limitations, commands saturation).