Fixed-time angle of attack constrained control for aircraft considering dynamic icing process
Zehong Dong, Xingya Da, Yinghui Li, Zhe Li, Like Xie
TL;DR
This paper introduces a new control strategy for aircraft during icing conditions to maintain stability by accounting for dynamic changes in aerodynamics.
Contribution
The novel contribution is a fixed-time angle of attack-constrained control method that considers the dynamic icing process.
Findings
An ice wind tunnel experiment revealed how aerodynamic coefficients change with angle of attack and icing intensity.
A deep neural network method accurately determines the stalling angle of attack during icing.
The proposed control strategy effectively stabilizes aircraft during dynamic icing as verified by simulations.
Abstract
Aircraft icing deteriorates aerodynamic performance and reduces stall angle of attack, the fast convergence rate of tracking error is required to stabilize the aircraft when aircraft icing occurs. The state-of-the-art control methods for icing aircraft mostly assume that the icing of aircraft is instantaneous. Aiming at these issues, a fixed-time angle of attack-constrained control strategy is designed considering dynamic icing process. In order to explore the variation of aerodynamic coefficients in the process of dynamic icing, an ice wind tunnel experiment is implemented, and the relationship between lift coefficient, drag coefficient and pitching moment coefficient with angle of attack and icing intensity is obtained by fitting method. In order to prevent the stalling problem caused by the decrease of the stalling angle of attack in the process of dynamic icing, a method to…
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Taxonomy
TopicsIcing and De-icing Technologies · Aerospace and Aviation Technology · Plasma and Flow Control in Aerodynamics