Multiple model adaptive control using second level adaptation for a delta-wing aircraft

Abstract

Purpose

The purpose of this paper is to design a stable controller such that the control input is applied to the delta-wing aircraft in order to adjust the roll dynamics. The controller must provide a desired tracking performance with minimum tracking error.

Design/methodology/approach

In this paper, the second level adaptation (SLA) strategy is applied to control a delta-wing aircraft using multiple models. The implemented control structure is compared with the first level adaptation (FLA) and model reference adaptive control (MRAC) techniques.

Findings

SLA architecture not only copes with a wide uncertainty domain caused by aerodynamic effects, but also its rapid and accurate convergence is one of its most important features. Furthermore, this strategy makes a smoother control signal with respect to FLA and MRAC even at the same initial times. It should be also noted that SLA using three models, copes with uncertainty that may occur to the aircraft at high Angle Of Attacks (AOAs) at the entire flight envelope.

Originality/value

In this paper for the first time the application of this strategy is used to identify and control a delta-wing aircraft. Furthermore a systematic block diagram approach is proposed for the design.

Citation

Ahmadian, N., Khosravi, A. and Sarhadi, P. (2015), "Multiple model adaptive control using second level adaptation for a delta-wing aircraft", International Journal of Intelligent Unmanned Systems, Vol. 3 No. 1, pp. 2-17. https://doi.org/10.1108/IJIUS-08-2014-0006