Wyniki wyszukiwania - BazTech

1

State-space model and implementation Polish Power Exchange in Matlab and Simulnk environments

Marlęga R.

Information Systems in Management

|

2017

|

Vol. 6, No. 4

294--308

EN

This work contains selected results of research on modelling identification of Polish Power Exchange (TGEE) on the example of the figures quoted on the Day Ahead Market (DAM) on TGEE in Poland. In order to obtain a model of the TGEE system on the beginning it was conducted to identify the figures for the period 01.01.2013-31.12.2015 obtaining discrete parametric model arx in MATLAB and Simulink environments using System Identification Toolbox (SIT). The resultant model was converted to a continuous parametric model, and that one on a continuous model in the state space. On the basis of obtained equations of state and outputs, there was interpreted a state variables and parameters of the selected model, i.e. selected elements of the matrix A and matrix B. Research continues.

2

Wyznaczanie poślizgów w próbkach typu push-out techniką wizyjną

Czabak M.

Zeszyty Naukowe. Mechanika / Politechnika Opolska

|

2014

|

z. 104

31-34

EN

The article presents a technique for determining slips in push-out composite wood and concrete samples by means of a digital camera. The presented analysis uses also the Matlab environment for processing the recorded images of tested samples.

3

A Time optimal path planning for trajectory tracking of wheeled mobile robots

Vivekananthan R., Karunamoorthy L.

Journal of Automation Mobile Robotics and Intelligent Systems

|

2011

|

Vol. 5, No. 2

35-41

EN

Avariety of approaches for trajectory tracking control of wheeled mobile robots have been implemented. This paper presents a model for a time optimal motion control based on fuzzy logic algorithm for a three wheeled nonholonomic mobile robot with desired function. Simplified kinematic equations of a differentially driven robot are designed to follow the path with evaluated linear and angular velocities. Here, the proposed kinematic model is based on a simple geometric approach for getting the desired position and orientation. The speeds are varied depending on the variations in the path and on the posture of the robot. The robot is subjected to move in a constrained workspace. The control architecture was developed based on fuzzy logic algorithm to obtain time optimal motion control of robot trajectory tracking. The kinematic model was done on Matlab software environment and profound impact on the ability of the nonholonomic mobile robot to track the path was evaluated.

4

Symulacja oddziaływania pieca łukowego na system energetyczny

Wciślik M., Kazała R.

Zeszyty Naukowe. Elektryka / Politechnika Łódzka

|

2001

|

z. 97

151--158

PL

W czasie pracy pieca łukowego występują szybkie zmiany obciążenia, powodujące powstawanie zakłóceń w sieci zasilającej. W efekcie występują zjawiska takie jak zmiany częstotliwości, migotanie napięcia w sieci zasilającej oraz generowanie wyższych harmonicznych. Mechanizmy powstawania tych zjawisk nie są w pełni określone. Na ich charakter może mieć wpływ praca układów regulacji urządzeń wytwarzających energię elektryczną oraz regulatorów posuwu elektrod pieca łukowego. Przy projektowaniu tych regulatorów powinno się uwzględniać interakcję między układami regulacji. Celem pracy jest określenie mechanizmów oddziaływania pieca na system zasilający. W tym celu zamodelowany został fragment systemu energetycznego wraz z piecem lukowym. Dla przedstawionego modelu przeprowadzone zostały badania symulacyjne w środowisku Matlab i Simulink, w których analizowano zachowanie systemu zasilania w trakcie pracy pieca.

EN

Fast changes of power of load during exploitation of an arc furnace cause formation of disturbances in power supply system. The phenomena such as frequency changes, voltage flickers and generating of higher harmonics appear in result. The formation mechanisms of the phenomena is not cleared. They may depend on work of automatic control devices of the energy electric generating units and elektrode position controllers of arc furnaces. The interactions between the control devices ought to be taken into account in designing of the electrode controlers. The explonation of the mechanisms of influence of arc furnace on supply system is the main purpose of the paper. The part of the power supply system with the arc furnace was modeled in the Matlab and Simulink environment. The simulation and investigation of behaviour of power supply system during electric steelmaking process were developed using the model.