کنفرانس مهندسی برق ایران

صفحه اصلی / سی و دومین کنفرانس بین المللی مهندسی برق

Fixed-Time Nonlinear Observer for a Class of Applicable Nonlinear Systems

نویسندگان :

علی ابویی¹ Mohammad Hadi Rezaei²

1- دانشگاه یزد 2- دانشگاه یزد

کلمات کلیدی :

Fixed-time stabilization،nonlinear observer،initial conditions،disturbance

چکیده :

This article focuses on the problem of designing fixed-time nonlinear observer for a class of nonlinear systems with matched and mismatched uncertainties. The class of nonlinear systems discussed in this paper includes many real-world nonlinear systems such as unmanned aerial vehicles, robot manipulators, and so on, which makes the proposed observer applicable to many practical nonlinear systems. According to fixed time stability theorem, it is proven that states of proposed observer will achieve to the real states in a fixed time. The advantage of fixed-time observer, compared to finite-time observer, is that the convergence time upper bound of fixed time is unaffected by initial conditions; it solely depends on the design parameters. Numerical simulations demonstrate the effectiveness of the proposed observer.