Scientific papers - Annals of "Dunarea de Jos" University of Galati - Analele științifice ale Universității "Dunărea de Jos" din Galați: Recent submissions
Afișează articolele 1341-1360 of 1845
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Performance Comparison of Sliding Mode Controller and Conventional Pid Controller for DC Motor
("Dunarea de Jos" University of Galati, 2013)This paper is concerned with the performance comparison of Sliding Mode Controller and conventional PID Controller for the control of DC Motor. The DC motor can be modeled as a linear time invariant single input single ... -
New Strategy Combine Cluster Head's Data for Increasing WSN Lifetime
("Dunarea de Jos" University of Galati, 2013)This article represents a new method to select several distinct routes among cluster heads want to limit the direct connection of all cluster heads and base station. Cluster heads use those near base station to transfer ... -
Some Properties of Entropies for change Detection
("Dunarea de Jos" University of Galati, 2013)The segmentation of signals is an important process in change detection applications. Many results reported in the literature use information and entropy, as direct or indirect processed variables. The objective of the ... -
Conceptual framework for cloud based ubiquitous learning environment through M-Learning
("Dunarea de Jos" University of Galati, 2013)Cloud computing is a recent trend in storing and managing data over a network. Cloud computing entrusts remote services with a user's data, software and computation. Here, we propose a design where a ubiquitous learning ... -
Intelligent Software Agents for decizion Making in Enterprise
(Universitatea "Dunarea de Jos" of Galati, 2013)This paper will attempt to highlight the complexity of decision-making mechanisms as well as the interest of integrating the cognitive dimension into the simulation models, with a view to evaluate the impact of technological ... -
Counting Minimum Cost Bounded Degree Subtrees in Graphs with Small 2-Vertex-Connected Components
("Dunarea de Jos" University of Galati, 2013)In this paper we present new algorithms for counting minimum cost bounded degree subtrees in connected graphs in which the 2-vertex-connected (biconnected) components have small sizes. The 2-vertex-connected components and ... -
Hybrid modelling based control of an processing / reprosessing mechatronicline served by an autonomous robotic system
("Dunarea de Jos" University of Galati, 2013)The new idea in this paper is to make a processing line capable of reprocessing pieces that have not passed the quality test. The focus is to provide a model of the processing line and to introduce in the process a wheeled ... -
Artifacts Removing in Ultrasonic Images by Fusion Processes
("Dunarea de Jos" University of Galati, 2013)Allmost airborne ultrasonic images used in robotics have artefacts and distorstions, when comparing real objects with those presented in ultrasonic images. The differences between reral and reference images have various ... -
Gis Components: an Overview of the Software Format Approaches
("Dunarea de Jos" University of Galati, 2000)The paper proposes a softwarel multimedia point of view of the resources and fi1e formats used in GIS applications. An overview of the most known software approaches for GIS data management and components is proposed in ... -
Computational experience in Solving Large Linear Matrix Equations for Automatic Control
("Dunarea de Jos" University of Galati, 2004)State-of-the-art, uni-processor linear matrix equation solvers for automatic control computations are investigated and compared for various problem sizes. Generalpurpose SLICOT solvers are the most efficient ones for ... -
On the Performances of Different types of Controllers for Active Power Filters
("Dunarea de Jos" University of Galati, 2004)This paper analyses the performances of three different types of controllers for shunt active power filters. The controllers are used in the d-q frame, the same frame in which the reference signal for the 5th and 7th ... -
Robots Control by Adaptive Gain Smooth Sliding Observer-Controller and Parameter Identification
("Dunarea de Jos" University of Galati, 2004)An adaptive gain, smooth sliding observer-controller are developed to control uncertain parameters, -degree of freedom rigid robotic manipulators. Furthermore, an on-line, closed loop identification scheme, for time-varying ... -
Transducer-Shape Optimization for Angle Estimation of a Broadbrand Monaural Sonar System
("Dunarea de Jos" University of Galati, 2004)In this paper we describe a procedure for the search of the optimal trans-ducer geometry for a monaural, broadband sonar system. We restrict ourselves to a simple transducer morphology that can be technologically realized: ... -
Open-Loop control of a Bipolar Stepper Motors Using the Specialized Integrated Circuits
("Dunarea de Jos" University of Galati, 2004)The paper describes the open-loop control of a stepper motors. Bipolar stepper motors can be driven with an L297, an L298N bridge driver and very few external components. With an L298N this configuration drives motors with ... -
Feedback Linearization Control of Wind Power Systems
("Dunarea de Jos" University of Galati, 2004)This paper focuses on the development of a feedback linearization control for a variable speed fixed pitch wind turbine driving a permanent magnet synchronous generator. The power system is considered to operate on an ... -
Describing Function Method for PI-Fuzzy Controlled Systems Stability Analysis
("Dunarea de Jos" University of Galati, 2004)The paper proposes a global stability analysis method dedicated to fuzzy control systems containing Mamdani PI-fuzzy controllers with output integration to control SISO linear / linearized plants. The method is expressed ... -
Robust Discrete-Time Adaptive Sliding Mode WMR Trajectory Tracking and Parameter Identification
("Dunarea de Jos" University of Galati, 2004)In this paper a discrete-time adaptive sliding mode controller for three wheels mobile robot (WMR) is presented. The dynamical model with time-varying mass has been taken into account. The sliding-mode controller has ... -
A Simple Load Power Estimator for Quasi-Direct AC-AC Converter System
("Dunarea de Jos" University of Galati, 2003)In this paper a simple load power estimator for the three-phase quasi-direct acac converter system is reported. Since the ac-ac converter control by means of pulsewidth modulation (PWM) is based on the power balance ... -
Vague Criteria Relational Database Queries
("Dunarea de Jos" University of Galati, 2003)The most accessible interfaces querying relational database should allow vague terms included in selection criteria. The gradual property stands for the simplest vague selection criterion, but more categories of vague ... -
Analysis of Functional Stability of the Triphased Asynchronous Generator Used in Conversion Systems of a Eolian Energy Into Electric Energy
("Dunarea de Jos" University of Galati, 2003)This paper presents a study of the influence of the main perturbation agent over the functional stability of the triphased asynchronous generator (for the two alternative: with coiled and short circuit rotor), used for ...
