Căutare Scientific papers - Annals of "Dunarea de Jos" University of Galati - Analele științifice ale Universității "Dunărea de Jos" din Galați după Data publicării
Afișează articolele 101-120 of 1845
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Dynamic Analyze for the Chassis-Cab System Having Elastic Intermediate Link (Elastic Interface)
(Universitatea "Dunărea de Jos" din Galați, 2004)Among the machinery generating occupational diseases due to the vibrations transmitted to human body the portable hand-held construction equipment such as drill hammers and demolition hammers are classified. In order ... -
Analysis of the Anti-Seismic Passive Isolation System Based on the Virtual Prototyping
(Universitatea "Dunărea de Jos" din Galați, 2004)This work propose a new onset for dynamic behaviour analysis of the passive anti-seismic and/or anti-vibrational elastic elements and systems. The basics of this new approach are constituted by the virtual prototyping ... -
3D Modelling Multiple Faucets Bodies
(Universitatea Dunărea de Jos" din Galați, 2004)In this work is doctored the way of tackles the and realization of a innards by the students in the program Autocad. The work has as objective a these accomodation with the commands 3D the and a crossing from 2D to 3D ... -
Analitical evaluation of the Dynamic Performances for the Wheel Loader Analysis
(Universitatea "Dunărea de Jos" din Galați, 2004)In this paper the author propose a physical and mathematical model, useful to analyse the dynamic performances of the wheel loader equipment. It supposed that the evaluation of the natural frequencies constitute a well ... -
Autolisp & DCL Method for Automatic Technological Design
(Universitatea "Dunărea de Jos" din Galați, 2004)The work has as purpose to present the general principles of working with the technological processors in designing the casting technologies and to put into evidence the advantages of this designing method. As examples, the ... -
Analysis of the Dynamic Response to Stochastic Actions on the Tilting System of the Loader Bucket with Hydraulic Correlator
(Universitatea "Dunărea de Jos" din Galați, 2004)The resistance encountered by the active organ – the bucket – of the loader when digging into the material pile is part of the category of external influences applied to the equipment. Generally this force is not constant ... -
A Solution to a Deflection Beam Problem
(Universitatea "Dunărea de Jos" din Galați, 2004)The present paper shows how the minimal total potential energy principle it is used for elastic systems in the case of the determination of the linearelastic displacements which determines the beams bending. Qualitative aspects ... -
The Coefficient of Restitution in the Plastic Deformation Process
(Universitatea "Dunărea de Jos" din Galați, 2004)In the analysis of dynamic processes and plastic deformation which appear on the forging and die forging equipments dint the shocks (forging hammers and screw presses), it is use frequently theoretical study of de collision ... -
About of the Analytical Exactly Solutions of the Differential Equations of the Non-Linear Oscillators
(Universitatea "Dunărea de Jos" din Galați, 2004)This work presents the manner of the solving of the non-linear differential equations from order II with the form &y& + p(t)y = q(t)y1-2a . These equations can characterize the excited vibrations of the mechanical ... -
About Concrete Consolidation and Vibration
(Universitatea "Dunărea de Jos" din Galați, 2004)Proper vibration of fresh concrete is an important process in order to ensure optimum strength, durability, and appearance of quality precast products. Accepted practices in the precast industry are unique in some respects ... -
Research Regarding the Investigation of Steel Hardness
(Universitatea "Dunărea de Jos" din Galați, 2004)Mobile hardness testing is on the advance: in these times of cost pressures and higher quality requirements there is a quick and economical supplement to stationary hardness testing in the modern production process. The ... -
Regarding the Efficiency of the Decelaration Through Impedance Coiling of the Hydraulic Cylinders
(Universitatea "Dunarea de Jos" din Galați, 2004)The paper present a point of view sustained by calculations about the efficiency of the deceleration system by impedance coiling of the hydraulic cylinders. It is shown that the simple presentation of the impedance ... -
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 ... -
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 ... -
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 ... -
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 ... -
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 ... -
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 ...
