Browsing by Subject "Robust adaptive control"

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    Computable delay margins for adaptive systems with state variables accessible
    (Institute of Electrical and Electronics Engineers Inc., 2017) Hussain, H. S.; Yildiz, Y.; Matsutani, M.; Annaswamy, A. M.; Lavretsky, E.
    Robust adaptive control of plants whose state variables are accessible in the presence of an input time delay is established in this paper. It is shown that a standard model reference adaptive controller modified with projection ensures global boundedness of the overall adaptive system for a range of nonzero delays. The upper bound of such delays, that is, the delay margin, is explicitly defined and can be computed a priori. © 1963-2012 IEEE.
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    Robust adaptive posicast controller
    (IFAC, 2015) Yıldız, Yıldıray; Annaswamy, A.
    Adaptive Posicast Controller that is robust to delay-mismatch is introduced in this paper. Inspired from a recent result on guaranteed delay margins in adaptive control, the original adaptive laws of the above mentioned controller are modified using projection to compensate the uncertainty in the input delay. It is conjectured and shown in simulations that even though the assumed upper bound for the delay value is exceeded, Adaptive Posicast Controller with projection algorithm keeps all the system signals bounded.