– One of the more challenging and yet unresolved issues which is paramount to the success of ATM networks is that of congestion control for Available Bit Rate (ABR) traffic. Unlike other ATM service categories, ABR provides a feedback mechanism, allowing interior nodes to dictate source rates. Previous work has demonstrated how linear adaptive control theory can be utilized to create a stable a...

A classical question in adaptive control is that of convergence of the parameter estimates to constant values in the absence of persistent excitation. We provide an affirmative answer for a class of adaptive stabilizers for nonlinear systems. Then we study their asymptotic behavior by considering the problem of whether the parameter estimates converge to stabilizing values-the values which woul...

Because of extreme local saturation at pole tips of excited phase and uncircular shape of rotor and stator, a Swithed Reluctance Motor (SRM) does not have a simple and accurate mathematical model. Therefore, the output control of this motor requires a robust controller which is not based on an accurate model of the process. Fuzzy controllers, to some extent, will satisfy these requirements. Tet...

In this paper, path following control and trajectory tracking control of a mobile robot have been studied. Reference convergence in a path following problem and time convergence in a trajectory tracking problem are considered in the cost function of the nonlinear model predictive control framework. The benefit of path following control is that the path following controller eliminates aggressive...

Constant power loads have negative impedance characteristics, which reduce the damping of DC/DC converter systems and effects on stability DC microgrid. In this paper, a finite-time parameter observer-based sliding mode controller is proposed for boost with constant loads. Firstly, non-singular terminal sliding-mode designed based flatness differential control theory. Secondly, observer to esti...

in this study, based on the optimal free derivative without memory methods proposed by cordero et al. [a. cordero, j.l. hueso, e. martinez, j.r. torregrosa, generating optimal derivative free iterative methods for nonlinear equations by using polynomial interpolation, mathematical and computer modeling. 57 (2013) 1950-1956], we develop two new iterative with memory methods for solving a nonline...

A discontinuous projection based adaptive robust control (ARC) design is constructed for nonlinear systems transformable to the semi-strict feedback form without knowing the bounds of parameter variations and uncertain nonlinearities. Departing from the existing robust adaptive control schemes in which the unknown bounds are estimated on-line, the proposed ARC design only adapts actual physical...

In this paper, the tracking control problem of underwater robot manipulators is investigated under influence lumped disturbances, including unknown ocean current disturbances and parameter uncertainties. The proposed novel continuous nonsingular finite–time (CNFT) method twofold. Firstly, modified adaptive super–twisting algorithm (ASTA) with a fast terminal sliding mode (NFTSM) manifold to gua...

This paper designs a novel smooth super-twisting extended-state observer (SSTESO)-based sliding-mode control (SSTSMC) scheme to promote the robust ability and voltage-tracking performance of DC-DC buck converters. First, an SSTESO is proposed estimate unknown lumped disturbance compensate for estimation voltage controller. The realized by constructing function replace nonlinear sign in STESO, w...