The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper describes an application of Artificial Bee Colony (ABC) to load frequency control (LFC) in single, two and multi-area interconnected power systems. The proposed ABC algorithm is used to obtain the optimal values of the proportional-integral-derivation (PID) controller parameters based load frequency control (LFC). The principal function of the LFC loop is to control the frequency and active...
Mechanical faults present a large portion of induction motor failures, if left undetected, it can lead to partial or total breakdown of the machine. This paper propose a scheme to detect and diagnose mechanical faults in an induction motor by the AR model coefficients of the Torque signal. First, the torque signal obtained from experiment in different conditions: healthy condition, motor with dynamic...
This article presents a review of several methods used for parameters extraction of solar cells. These methods are found in the literature since the 60s. At least thirty distinct methods are mentioned and categorized. Three of each category are discussed in details. The best one is chosen based on some criteria cited below. This paper could serve as a convenient reference for future work in solar...
Segmentation by using region-based deformable models has known a great success and large domain of applications. In this paper, we propose a fast algorithm to minimise model which combines local fitting energy and global fitting energy. The minimisation via the proposed algorithm avoids solving any Partial Differential Equation PDE. Consequently, there is no need to any stability conditions. Furthermore,...
In recent years direct torque control (DTC) has become an alternative to the well known vector control especially for permanent magnet synchronous motor (PMSM). But it presents a problem of field linkage and torque ripple. In order to solve this problem the conventional DTC is combined with space vector pulse width modulation (SVPWM). This control theory has achieved great success in the control of...
Content-Based Image Retrieval (CBIR) becomes necessary when dealing with large collections of images. Recently, interesting retrieval methods are based on Bag-of-Words (BoW) model. It allows the projection of an image in a vector space called the word space. Nevertheless, this space can be further refined in order to reflect the semantic content of an image. Indeed, it can be transformed into a lower...
In the last years, the alternative energy resources and the fuel cell based distributed generation (DG) system applications have attracted increased interest. This paper investigates a doubly Fed Induction Generator (DFIG) wind turbine and a Fuel Cell (FC) based DG system. The modeling and the control of a hybrid DFIG WT/FC system are presented. The system configuration and the characteristics of...
This paper presents a predator-prey model that is the key element of ecological systems. We present the results of coevolving artificial creatures of two species (predator and prey) in a 3D physically simulated environment. The evolutionary process uses the physical properties of virtual creatures and two opposite fitness functions to drive the process to the behaviors we are looking for. Our best-evolved...
In this work, we aim to predict the design of a resonant inverter with the induction coil system for metal induction hardening. Considering a rod sample metal made out of Z200C12 material, we propose to determine the required power size of the inverter and the coil specifications, which would meet the necessary heat to achieve the appropriate hardening profile according to the industrial standard...
This paper presents a two-loops structured control system design for quadrotor's position/attitude trajectory tracking. The aim of the outer loop is to provide the roll/pitch tilting commands to the inner loop, which in turns generates the quadrotor's tilting angles required to control the horizontal CG position. To fulfill that purpose, the outer loop utilizes Generalized Dynamic Inversion of a prescribed...
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...
This paper introduces a custom real-time control platform design for a quadrotor. The control framework is designed to be universal but yet, flexible for implementation of various control and navigation algorithms. The developed platform is modular and is presented in three categories: hardware, software and communication. System identification is also presented for parameters measurement and estimation...
Embedded multimedia systems with multi-application scenarios increase the number and computational power of processing elements. To satisfy this growing demand, a network on chip is used due to lower message latency, better scalability and more reliable performance predictability. Today the focus is not on the implementation of one single application on the many-core platforms, but using a single-die...
Managed Pressure Drilling (MPD) in oil-gas industry remains a challenge problem. As the annulus is completely clogged, upstream choke pressure measurement can be used to control the well downhole pressure. To reinforce the tunnel face, MPD becomes difficult as the annulus is totally open. In this paper, we propose a finite dimensional model to all fluid phenomena between the main pump till the fluid...
A novel adaptive backstepping sliding mode control (ABSMC) law with fuzzy monitoring strategy is proposed for the tracking control of a cart-pendulum system. The proposed ABSMC scheme combining the sliding mode control and the backstepping technique, ensure that the occurrence of the sliding motion in finite time and the trajectory of the tracking error converge to equilibrium point. Furthermore,...
In this paper, the problem of fault detection under disturbances for multi-input and multi output linear systems is investigated. The considered fault detection approach relies on the recently developed PI observer. A new algorithm is proposed to calculate the gain of the PI observer with the purpose of optimizing the fault detection performance. In the proposed approach, part of the gain matrix is...
In the present work, thin films of zinc oxide (ZnO) were deposited by sol-gel associated to spin coating method. Sol was prepared using zinc acetate, 2-Methoxyethanol and monoethanolamine (MEA) as starting materials. Films were grown using solgel method associated to spin coating method. ZnO films morphology was investigated by Scanning Electron Microscope. SEM images reveal that films are composed...
This article proposed a new smart diagnosis algorithm of the open-circuit fault in a PV generator. For the faults conventional diagnosis, it used the analysis of the actual operation parameters of the PV generator. For the faults smart diagnosis, it based on the optimization of SVM technique by the neural network for the classification of observations located on its margin. The resulting algorithm...
Elliptic Curve Cryptography (ECC) has been the focus of much recent attention since it offers the highest security per bit of any known public key cryptosystem. This benefit of smaller key sizes makes ECC particularly attractive for constrained devices, since its implementation requires less memory and processing power. The present work gives a description of a hardware implementation of an F2m elliptic...
In this paper, the design of a perimeter security system based on fiber optic disturbance sensor with improved sensitivity was described. The system consisted of fiber optic disturbance sensor that was the Sagnac interferometer and a control computer. First, the light polarization and fiber birefringence effects on the sensor sensitivity improvement were studied. Then a modified digital Phase Generated...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.