Căutare Annals of the University "Dunarea de Jos" of Galati. Fascicle III: Electrotechnics, Electronics, Automation Control and Informatics după Titlu
Afișează articolele 144-163 of 230
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Omline industrial Proces Broacast and Control Based on IP and Serial Networks
("Dunarea de Jos" University of Galati, 2007)The Internet network in conjunction with a strong security policy can be an ideal online broadcast system for the industrial processes monitoring and control. Because the distributed controllers are connected through ... -
On a Takagi-Sugeno Fuzzy Controller with Non-Homogenous Dynamics
("Dunarea de Jos" University of Galati, 2001)The paper proposes a Takagi-Sugeno fuzzy controller with non-homogenous controller dynamics with respect to the two input channels, that means, in the linear case, different transfer functions with respect to the reference ... -
On Activity Modelling in Process Modelling
("Dunarea de Jos" University of Galati, 2001)The paper is looking to the dynamic feature of the meta-models of the process modelling process, the time. Some principles are considered and discussed as main dimensions of any modelling activity: the compatibility of ... -
On Estimation of the Orientation of Mobele Robots Ising Turning Fuctions and Sonar Information
("Dunarea de Jos" University of Galati, 2003)SONAR systems are widely used by some artificial objects, e.g. robots, and by animals, e.g. bats, for navigation and pattern recognition. The objective of this paper is to present a solution on the estimation of the ... -
On Exponential and Asymptotic Estimation of State Variables in Bioprocesses
("Dunarea de Jos" University of Galati, 2001)The paper presents on-line estimation strategies for bioprocesses, which are characterized by strongly nonlinear dynamics. A general form for the state observers is analysed and the exponential observability of bioprocesses ... -
On Image Transmission in Communication Channels Using Alamouti Space-Time Codes
("Dunarea de Jos" University of Galati, 2012)Transmitting large amounts of data through wireless communication channels, at high speed and low error probability, is a major challenge for the researchers in the field. In this paper, aspects of image transmission in ... -
On Phenomena Based Metamodelling - A Process System Engineering Point Of View
("Dunarea de Jos" University of Galati, 2000)This work is looking to methodological aspects of process modelling. The point of view is more from Process System Engineering (PSE) in order to develop formal and generic techniques for process modelling, and to use ... -
On Process Modelling Using Physical Oriented and Phenomena Based Principles
("Dunarea de Jos" University of Galati, 2000)This work presents a modelling framework based on phenomena description of the process. The approach is taken to easy understand and construct process model in heterogeneous possible distributed modelling and simulation ... -
On the Applicability of State-of-the-Art Fault Diagnosis Methodologies to Simple and Complex Systems
("Dunarea de Jos" University of Galati, 2010)This paper performs an analysis on the applicability of state-of-the-art fault diagnosis methodologies to both simple and complex systems. Here, a complex system represents a system whose global behavior, which emerges ... -
On the harmonics reduction using wavelet based signal processing
("Dunarea de Jos" University of Galati, 2000)This paper presents a method for calculating the reference currents needed for the command of an active filter. By using the Discrete Wavelet Transform (DWT) the high-frequency components of the currents are eliminated. ... -
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 ... -
On the Potential of Using Fractional-Order Systems to Model the Respiratory Impedance
("Dunarea de Jos" University of Galati, 2006)This contribution provides an analysis of the human respiratory system in frequency domain by means of estimating the respiratory impedance. Further on, analysis of several models for human respiratory impedance is done, ... -
On the Snubber Influence to the Switching and Conduction Losses in a Converter Using Switched Capacitor
("Dunarea de Jos" University of Galati, 2002)The paper deals to design and to compute the snubber parameters influence on the switching and conduction losses of the transistors (IGBT) used as bidirectional switches in a converter with switched capacitor. The converter ... -
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 ... -
Optimal Coding for Qualitative Sources on Noiseless Channels
("Dunarea de Jos" University of Galati, 2006)In this paper we perform the encoding for sources which are only qualitatively characterized, that is, each message the source delivers possesses a certain quality, expressed as cost, importance or utility. The proposed ... -
Optimal Control Development System for Electrical Drives
("Dunarea de Jos" University of Galati, 2008)In this paper the optimal electrical drive development system is presented. It consists of both electrical drive types: DC and AC. In order to implement the optimal control for AC drive system an Altivar 71 inverter, a ... -
The Optimal Control for D.C. Position Drive System
("Dunarea de Jos" University of Galati, 2007)A position drive system with D.C. motor is operated using conventional position, speed and current controls. These controls provide a good dynamic and steady-state behaviour, but they do not take in consideration the ... -
Optimal Control for Electric Vehicle Stabilization
("Dunarea de Jos" University of Galati, 2010)This main objective of the paper is to stabilize an electric vehicle in optimal manner to a step lane change maneuver. To define the mathematical model of the vehicle, the rigid body moving on a plane is taken into ... -
Optimal Control Structure for Variable Speed wind Power System
("Dunarea de Jos" University of Galati, 2002)This paper presents an optimal control structure for variable speed, fixed pitch wind turbine. The control objective results from the optimization criterion that includes two contradictory demands: maximization of the ... -
Optimal Control Using Evolutionary Algorithms
(2017)Optimal Control Problems involve dynamic systems that are subject to algebraic or differential constraints and whose evolution may be characterized by a performance index. Such a problem can be solved by the well known ...
