The levitation control in a linear magnetic levitation (maglev) rail system is a subject of considerable scientific interest because of highly nonlinear and unstable behaviours. The authors mainly focus on the sequential developments of backstepping-based control systems including a backstepping control (BSC), an adaptive BSC (ABSC) and an adaptive dynamic surface control (ADSC) for the levitated positioning of the linear maglev rail system. In the proposed ADSC system, a filter mechanism is incorporated with BSC to cope with the problem of the explosion terms caused by repeated differentiations in backstepping design procedure. Moreover, a robust observer is designed for predicting system uncertainties to solve the trouble of chattering phenomena caused by a sign function in BSC and ABSC law despite the utilisation of a fixed value or an adaptive tuning algorithm for the lumped uncertainty bound. The effectiveness of the proposed control schemes for the levitation control of a maglev system is verified by numerical simulations and experimental results, and the superiority of the ADSC system is indicated in comparison with the BSC and ABSC systems.


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    Title :

    Backstepping-based levitation control design for linear magnetic levitation rail system


    Contributors:
    Wai, R.J. (author) / Lee, J.D. (author)

    Published in:

    Publication date :

    2008


    Size :

    15 Seiten, 35 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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