The paper focuses on an adaptive output-tracking problem using on-line extremum seeking command generation. Two interconnected dynamic uncertain subsystems are considered. Using direct adaptive neural network based control, both subsystems are forced to follow their corresponding trajectories. While the command for the first subsystem is predetermined, the command for the second subsystem is computed on-line such that the influence of the second subsystem on the first one is minimized. The problem is motivated by the need to design an autopilot for autonomous formation flight. The autopilot must perform in an aerodynamically uncertain environment. The control problem reflects two aircraft flying in a closed-coupled formation wherein the trailing aircraft must constantly seek an optimal relative position that minimizes the aerodynamic drag force induced by the wing vortices of the lead aircraft. Using feedforward neural networks and on-line extremum seeking command generation, the proposed control scheme provides bounded output tracking and minimizes the effect of uncertainty on the first subsystem's dynamics. Closed-loop system stability is shown using Lyapunov's direct method.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Adaptive extremum seeking control design


    Contributors:
    Lavretsky, E. (author) / Hovakimyan, N. (author) / Calise, A. (author)

    Published in:

    Publication date :

    2003


    Size :

    6 Seiten, 9 Quellen




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Extremum Seeking for Model Reference Adaptive Control

    Ariyur, Kartik / Ganguli, Subhabrata / Enns, Dale | AIAA | 2009


    Extremum Seeking for Model Reference Adaptive Control

    Ariyur, K. / Ganguli, S. / Enns, D. et al. | British Library Conference Proceedings | 2009


    Adaptive Extremum Seeking Control of Fed-Batch Bioreactors

    Titica, M. / Dochain, D. / Guay, M. | British Library Online Contents | 2003


    Extremum Seeking Control: Convergence Analysis

    Nesic, D. | British Library Online Contents | 2009


    Phase-based Extremum Seeking Control

    Wang, Suying | BASE | 2016

    Free access