Prediction and suppression of wing rock using bifurcation analysis
ZHOU Chi-jun
LEI Hu-min
ZHU Ji-hong
YIN Hang
Abstract：To predict and suppress the wing rock phenomenon appeared at high angle of attack, a new multiple degree-of-freedom model is first established via reasonable simplifications of lateral dynamics as well as a considerate access to wing rock’s primary properties. The wing rock motion is then predicted accurately in the open-loop analysis through using the bifurcation method. On this basis, a robust constraint adaptive backstepping control algorithm is proposed in the presence of model uncertainties and external disturbances, in which a command filter is introduced to impose magnitude limit on actuators and the tracking errors are compensated by filter dynamics. Moreover, the tracking errors in adaptive laws are replaced by compensated errors which renders a stable adaptation process even though the input saturation occurs. The closed-loop bifurcation analysis show that the wing rock motion is suppressed efficiently. Finally, the effectiveness of the multiple degree-of-freedom model and robustness of the proposed control algorithm are verified by six-degree-of-freedom numerical simulation.
Keywords：wing rockmultiple degree-of-freedom modelbifurcation analysisadaptive controlbackstepping 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：10( 233-242 )