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We aim to design in the present paper an adaptive output feedback control scheme to address the tracking problem of an uncertain system having full relative degree in the presence of neglected dynamics and modelling errors. Then, the obtained controller is augmented by an online radial basis function neural network (RBF NN) that is used to adaptively compensate for the nonlinearity existing in the...
This paper presents a novel terminal synergetic control for DC-DC buck converters. Since buck converters have high nonlinearity and uncertainty, an indirect adaptive control is developed based on recently developed synergetic control methodology. Fuzzy systems are used in an adaptive scheme to approximate the system using a nonlinear model while synergetic control guarantees robustness and the use...
In this paper an adaptive control technique combined with the so-called IDA-PBC (Interconnexion Damping Assignment, Passivity Based Control) controller is proposed for the stabilization of a class of underactuated mechanical systems, namely, the Inertia Wheel Inverted Pendulum (IWIP). It has two degrees of freedom with one actuator. The IDA-PBC stabilizes for all initial conditions (except a set of...
Due to the special characteristics of piezoelectric actuators, the modelling and control task of these devices has been one of the most important research topic in the last decade. In the first part of this paper, a T-S fuzzy model is proposed to represent the behavior of this type of actuators and the recursive least squares (RLS) algorithm is used to optimize the parameters of this model. In the...
This paper deals with the issue of projective synchronization of two distinct fractional-order chaotic systems with the presence of both uncertain dynamics and external disturbances. More precisely, this study is an attempt to investigate a novel fuzzy adaptive controller for achieving an appropriate projective synchronization of uncertain fractional-order chaotic systems. The adaptive fuzzy systems...
Our research focuses on exploring alternative perspectives to developing and modeling graphical user interfaces to enhance adaptability of a graphical user interface. The aim of our research is to model graphical user interfaces from a linguistic perspective: a linguistic point of view to graphical user interfaces. The linguistic model aims at enhancing adaptability by enhancing two quality properties:...
In 1986, Jacob Nielsen proposed a virtual protocol for computer-human interaction. His protocol aims at analyzing and understanding the interaction between the human and the computer based on linguistic criteria. Our research elaborates on his protocol to investigate the abilities and capabilities of employing a linguistic perspective in building graphical user interfaces with enhanced traceability...
Enterprise resource planning (ERP) projects are very complex tasks, expensive, time-consuming, and risky investments. One of the main reasons for the high ERP project failure rate is that managers don't assess and manage the risks involved in these projects. In addition, they don't know the importance degree for each of these risks. On the other hand, to the best of our knowledge papers proposing...
The main objective of this work is to study design methods of polynomial control laws by pole placement that presents actually smart solutions to many industrial applications. Even if these regulators are widely used, most of their applications concern problems where the reference signal does not vary in time. In this paper, we propose an indirect adaptive controller by fractional order pole placement,...
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