Low altitude heavyweight airdrop flight control design using sliding mode control with gains adaptation
LIU Ri
SUN Xiu-xia
DONG Wen-han
WANG Dong
Abstract：This paper proposes a global sliding mode flight control method with switching gains adaptation for low altitude heavyweight airdrop operations, in the presence of uncertainties whose bounds are not known. This method uses the feedback linearization technique to decouple the nonlinear heavyweight airdrop model, thus solving the strong nonlinear problem of the system. On this basis, a global sliding mode controller with switching gains adaptation is presented. It guarantees the global robustness of the system and overcomes the influence of the initial errors in the reaching phase of the sliding mode to the switching gains adaptation process. A modified gains adaptation method is proposed, which solves the overestimation problem of the switching gains in the sliding phase of the sliding mode. The stability and robustness properties are proved by using the Lyapunov theory. The control performance as well as the advantage of the proposed method is evaluated in a number of simulation scenarios.
Keywords：flight controlnonlinear systemfeedback linearizationadaptive controlsliding mode control
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：8( 1337-1344 )