Prof. Colin Fyfe (UK),
Prof. Roy Perryman (UK),
Prof. Stephen
Dodds (UK)
Prof. Marc A. Rosen (Canada),
Prof. Kun Gao (China),
Prof.
Francesco Muzi (Italy),
Prof. T.Panagopoulos (Portugal),
Prof.
Van Den Toorn (Netherlands),
Prof. J.Krope (Slovenia),
Prof. T.Pelikan
(USA),
Prof. G.Tsypskin (Russia),
Prof. I.Sandberg (USA),
Prof.
B.McCartin (USA),
Prof. M.Sheriff (USA),
Prof. N.Markatos (Greece),
Prof. Ming Li (China),
Prof. M.Itskov (Germany)
All aspects of cybernetics, applied systems theory in real
life,
development, sustainability, ecosystems, applications of civil
engineering, ecology, geoscience etc...are covered. It appears
quarterly. Special Issues are
specially encouraged.
On a Modal Approach for
Oscillations Damping in Affine and Piecewise Affine Systems
by Virginia Ecaterina Oltean, Radu
Dobrescu, Dan Popescu, Maximilian Nicolae
Abstract: In the case of
continuous affine systems, an oscillating behavior, due to the presence of pairs
of complex eigenvalues in the spectrum of the system matrix, is considered. The
control problem consists of damping the oscillations and tracking a piecewise
constant reference signal. A control solution is proposed, based on pole
placement combined with the internal model principle. Sufficient conditions for
the controller existence are deduced and some issues concerning fixed and
variable step simulations approaches are discussed. The results are extended to
piecewise affine hybrid systems, composed of a set of piecewise affine systems
and a switching strategy based on a state space partition.
Keywords:
Affine systems, controllability, discrete systems, internal model, hybrid
systems, pole placement, tracking
Full Paper, pp. 1-8
The Water Vapor
Influence in Gas Emissions in a Four Stroke Diesel Engine
by Charalampos Arapatsakos, Achilleas
Dratzidis, Anastasios Karkanis
Abstract: In nowadays there
are an increased number of cars and vehicles, which run on gasoline or diesel
fuel. As a result of this is the production of air pollution. There are several
many types of air pollutant. These include smog, acid rain, the greenhouse
effect and holes in the ozone layer. Some of these pollutants can be created by
human activities, such as cooking, smoking, car emissions, smokestacks and other
industrial inputs into the atmosphere and other by atmospheric conditions, such
as the wind and rain. This work examines the effect of water vapour in gas
emissions in Diesel engine. It includes the background and the calculation of an
adequate supply of water vapour in the exhaust pipe, the operating principles of
the Diesel engine, nozzles and the basic principles of spraying. It also
includes the process of setting up the experimental setup and the execution of
our experiments. Finally the diagrams that derived from the experimental
measurements of the quantities of air pollutants, with water vapour and without,
are presented, and their description, their analysis, general conclusions and
our suggestions for further investigation.
Keywords:
Gas emissions, Diesel engine, Water vapour injection
Full Paper, pp. 9-16
Improved Demand
Forecasting Using Local Models Based on Delay Time Embedding
by Bernd Scholz-Reiter, Mirko Kuck,
Christian Toonen
Abstract: Due to growing
dynamics and complexity of today’s markets, customer demands are often highly
volatile. In order to achieve a well-founded forecast of customer demands, a
company has to consider several dynamic influences. Classical simple statistical
prediction methods are mostly easy to apply but are not able to react on dynamic
behavior. More complex statistical methods achieve better forecasts but also do
not include dynamic means. Prediction methods of nonlinear dynamics consider
qualitative in addition to quantitative information within time series of past
customer orders in order to achieve better forecasts into the future. In
particular, local models use the information fostered by delay time embedding of
nonlinear time series analysis. In this paper, a research approach is presented
that has the goal of outlining suitable prediction methods for future customer
demands of a forecasting company in a production and delivery network.
Keywords:
Demand forecast, forecasting methods, nonlinear dynamics, time series analysis
Full Paper, pp. 17-27
The Gas
Emissions Temperature in Relation of CO, HC, NO and Smoke
by Charalampos Arapatsakos, Dimitrios
Christoforidis
Abstract: Clean air is an
important factor in the quality of life. Therefore, air pollution is something
that we cannot really ignore, as it affects negatively the environment and
consequently the sustainability of our lifestyle and production methods. Air
pollution is evident from the moment we step out of our house and greeted with
black colored smog that hit us directly. This smog is not due to climate but
rather due to each and every one of us. This work examines the correlation of
exhaust gases temperature and rounds/min with gas emissions (CO, HC, NO, smoke)
in a four-stroke diesel engine, using Multillayer Perceptrons (MLP) Networks.
The Multilayer Perceptrons Network relates with high precision the temperature
of exhaust gases and rounds/min of the engine, with gas emissions. The
importance of this work is that when measuring the exhaust gases temperature and
the rounds/min of engine forecast with very high precision their gas emissions.
The comparison of results became using measurements from the real function of
engine.
Keywords:
Gas emissions, Multillayer perceptrons (MLP) networks
Full Paper, pp. 28-35
Identifying
the Main Defects Appeared in the Structure of Continuous Blanks
by Erika Popa, Teodor Heput, Erika
Ardelean, Ana Socalici
Abstract: The study we
carried out aims at defining and sorting the internal flaws specific for
continuous cast semi-finished products, in order to enable the identification of
their source and to help in taking the appropriate steps meant to prevent or to
correct them, as the case may be. Industrial research has been done on the
five-strand continuous casting machine over a period of several months, when we
focused on the nature of the internal flaws that were found on reception of the
material under study.
Keywords:
Continuous casting, steel, internal flaws, fissures, micro-shrinkage, central
porosity, inclusions, longitudinal cavity
Full Paper, pp. 36-43
Researches on
the Influence of Alloying Elements on the Adamit Steel Type
by Adina Pauca, Teodor Heput, Virginia
Socalici
Abstract: Chemical
composition of the alloy from which the cylinders are made by rolling is one of
the main factors that determine macro and micro structure. This paper presents a
method of optimizing the chemical composition of rolling cylinders made of
carbon steel with high concentration. Based on industry to study the influence
of alloying elements on steel rolling mill cylinders cast for the determination
of correlation between surface hardness cylinders and alloying elements.
Optimization of chemical composition of the cylinder was made by mathematical
modeling of real experimental data obtained from production using specialized
computer program Excel and Matlab. Correlations obtained were plotted in this
way being able to determine optimal areas between hardness and hold various
alloying elements.
Keywords:
Adamit, Quality, Mechanical, Rolling, Rolling mill cylinders
Full Paper, pp. 44-51
A Distributed
Design for Computational Steering with High Availability of Data
by Cosmin Marian Poteras, Mihai Mocanu,
Constantin Petrisor
Abstract: This paper
introduces a new approach, based on state machines, for distributed frameworks,
that is able to support both distributed simulation and computational steering.
The framework makes use of a Distributed Chunk-based Flow Management System
(DCFMS) having as main benefits the logical partitioning and data localization
information. The architectures and implementation details of the two systems as
well as integrative experimental results are briefly discussed.
Keywords:
Distributed framework, chunk based data flow, state machines
Full Paper, pp. 52-61
Instrumentation & Control Architecture Applied for safe operation of a Hydrogen
Isotopes Storage System
by Eusebiu Ilarian Ionete, Bogdan
Monea, Marian Vacaru
Abstract: A critical issue,
in direct connection with the tritiated heavy water processing in a detritiation
plant, is the safe storage of the obtained Tritium, both for environment and
operating personnel. The properties of Hydrogen storage used materials refers to
their ability to high “connect” Hydrogen, to have a large storage capacity, to
be easily achievable and, if necessary, to allow its easy recovery. The metals
and intermetallic compounds are the most used materials. To build a safe storage
container for Tritium resulted from a heavy water detritiation facility, we
investigate titanium powder and titanium sponge as a storage material for
Hydrogen isotopes, Protium and Deuterium. Since the reaction of metal hydride
formation is, in most cases, sever exothermic and for many materials almost
spontaneous, new control system architecture applicable to Hydrogen isotopes
storage media, taking into account all those properties, is presented. This
architecture uses the resources of a DCS (Distributed Control System), based on
i-processor technology (able to integrate all typical control functions,
friendly display options, an alarm management system, historical data bases and
advanced control tools). These resources usage allows us to operate a Deuterium
and Tritium storage system under automatic control and to use an advanced
Operator Interface too. The DCS closed loop algorithm is used for manual and
automatic closed loop control for monitoring the corresponding operating
conditions.
Keywords:
Architecture, control system, hydrogen, isotopes, storage, safe operation
Full Paper, pp. 62-69
The
Macroregion Approach and Territorial Cohesion of the Baltic Region
by Tatjana Staube, Ineta Geipele
Abstract: The Baltic Sea
Region as macroregion moves towards the regional economic approach and to build
a knowledge-based economy, the new member states are in decentralization
process. Spatial planning is relatively new term for the Baltic Sea Region. The
authors focus on the economical development of the Baltic Sea Region The article
provides an overview on the spatial planning meaning, trends of the newest
research and modeling in spatial planning in the Baltic Sea Region. Several
multidimensional models on the spatial planning systems are observed. The Paper
also contains the sustainable development model worked out by the authors for
the modern industrial real estate property.
Keywords:
Baltic Sea Region, knowledge-based economy, modeling in spatial planning,
regional economic planning, spatial planning, sustainable European development,
territorial cohesion, territorial cooperation.
Full Paper, pp. 70-78
Selection,
Generation and Extraction of MCCTree using XMCCTree
by U. S. Sazaly, M. H. Selamat, S.
Baharom, M. Ab. Jabar
Abstract: Previous research
proposed notions of CLCA and MCLCA to answer keyword query in XML document. The
notions are implemented in its proposed algorithms and the result, namely
MCCTree, is ranked with its proposed ranking method. The algorithms transform
the XML tree into a compact global tree called CGTree, and select the MCCTree
from the CGTree. The resulted MCCTree is in a compact structure; however the
calculation in the ranking method requires the original structure as in the XML
tree. Thus, this paper presents a new algorithm that implements the same notions
with different approach. The MCCTree is returned in a structure as required by
the ranking method. This algorithm, called XMCCTree, improve the efficiency of
producing a set of MCCTree in answering keyword query in XML document.
Keywords:
XMCCTree, algorithm, MCLCA, CLCA, MCCTree, XML, keyword query
Full Paper, pp. 79-86
Sizing of a
3,000,000t Bulk Cargo Port through Discrete and Stochastic Simulation Integrated
with Response Surface Methodology Techniques
by L. Cassettari, R. Mosca, R.
Revetria, F. Rolando
Abstract: The purpose of the
study is to size, by means of a discrete and stochastic simulator, a bulk cargo
port for the unloading of coal to cover the annual requirements of a thermal
power plant located next to the berth. The logistics system under consideration
had to be designed so that it could ensure the supply of enough coal for the
operation of the plant while reducing the overall operating costs of the system
(freightage, demurrage for delays in unloading operations, investment costs,
overheads) to a minimum. Thanks to Design of Experiments (DOE) and Response
Surface Methodology (RSM), it was possible to determine the mathematical
relationship, in the form of regression meta-model, existing between the design
variables and the target function consisting in the overall annual operating
cost. After the sizing it has been finally done an analysis of the strength of
the identified solution as the needs for coal on the part of the power plant,
with a specific reference to the capacity of the intermediate accumulation tank
which constitutes a critical element in the design of this type of plants.
Keywords:
Bulk Cargo Port Design, Discrete and Stochastic Simulation, Mean Square Pure
Error Evolution, Response Surface Methodology
Full Paper, pp. 87-97
Automatic
Identification Technologies
by Maria Vlad, Alexandra Anisie,
Madalin Stefan Vlad
Abstract: With increasingly
urgent need for reliable security, biometrics is being spotlighted as the
authentication method for the next generation. Among numerous biometric
technologies, fingerprint authentication has been in use for the longest time
and bears more advantages than other biometric technologies do. In this paper
there are proposed two systems based on biometric identification, in conjuction
with smart card, for proof of advanced security offered by the systems. There
are presented also background of fingerprint recognition, along with data
storage on smart cards and RFIDs.
Keywords:
Biometry, identification, identity, RFID
Full Paper, pp. 98-105
Real-Time
Implementation of Predictive Control using Programmable Logic Controllers
by Marian Mrosko, Eva Miklovicova
Abstract: In this paper the
real-time aspects of digital control system implementation are investigated. The
control system design is based on the model predictive control, which is one of
the most popular advanced control design techniques. Two alternatives of
predictive control implementation using the programmable logic controllers (PLC)
are proposed and compared. In the first case the control law design and
execution is performed in PC using the MATLAB/Simulink environment and the PLC
is used only to accomplish the data acquisition and control input
implementation. The communication between PC and PLC is ensured by the OPC
communication protocol. In the second case the control law is irectly
implemented in PLC using the available instructions. The PC is not needed for
the real-time control execution; it only supports the control design and the
signal processing and visualization. In both cases controlled plant is wired to
PLC.
Keywords:
Model predictive control, programmable logic controller, OPC communication,
real-time system
Full Paper, pp. 106-113
Measurement of
the Wheel-rail Relative Displacement using the Image Processing Algorithm for
the Active Steering Wheelsets
by Min-Soo Kim
Abstract: The central
problem of the active wheelsets steering systems of the railway vehicles is the
measurement of the lateral movements of wheelsets with the noncontact manner.
This paper describes the development of a real-time vision system for active
steering of a railway vehicle to detect a lateral displacement between wheel and
rail in various dynamic environments. An active steering system has proven its
ability to reconcile the contradictingrequirements of running stability and
track friendliness on curve sections and it consists of one actuator, a
controller, and sensors. As one of the sensor system for detecting the
wheel/rail relative displacement in active steering bogie, the image processing
techniques were investigated with the aid of the vision based image processing
algorithm. In this paper, we present the design and implementation of a real
time vision system for a railway vehicle to measure its wheel/rail displacement.
In order to extract wheel and rail features, this paper uses the various
successive image processing algorithms which consist of the camera compensation
algorithm against the degradation image quality, the algorithm for improving the
contrast effect based on the block of the input image, the pre-processing
algorithm coped with the dynamic illumination environment based on the edge, the
line segment extraction algorithm of the wheel and rail using the RHT (Random
Hough Transformation), and the wheel-rail lateral displacement calculation
algorithm. Running test results show that our proposed lateral displacement
measurement method is accurate in each sampling rate, and make it a sensor to be
placed in the active steering control systems.
Keywords:
Image Processing Algorithm, Wheel/rail Relative Displacement, Active Steering
Full Paper, pp. 114-121
Development of
the Braking Performance Evaluation Technology for High-speed Brake Dynamometer
by Min-Soo Kim
Abstract: Brake system of
railway vehicles has a crucial role for the safety as well as riding quality of
passengers. And the technology of braking performance evaluation has been
generally developed with technology of speed improvement of railroad vehicle.
Brake dynamometer is designed to simulate the brake characteristic of the high
speed train, and has a function of record the data which can be reproduced and
help to analyze and compare the experimental object, and also is used to develop
and test the brake systems. In this paper, we tried to test braking friction
materials (disc brake and block brake) for the high speed rotation which is in a
current use commercially, and its results will be introduced by means of
arranging of a braking performance test evaluation technology on braking
friction materials of railway vehicle using the high speed dynamometer (400
[km/h]-grade).
Keywords:
Brake Dynamometer, Railway Vehicle, Friction Coefficients, Disc Brake, Block
Brake
Full Paper, pp. 122-129
Photo- and
Electroluminescence Properties of Pb1-xMnxTe(Se,S) Thin Films
by M. A. Mehrabova, H. R.Nuriyev, T. H.
Ismayilov
Abstract: In the given work
the energy spectrum and wave functions have been theoretically calculated for
quantum-sized films of Pb1-xMnxTe(Se,S) semimagnetic semiconductors. The photo-
and electroluminescence properties of Pb1-xMnxTe(Se,S) thin films by the method
of molecular beams epitaxial on BaF2 substrates were studied. It was established
that band gap width of epitaxial layers expanded by the change in Mn amount. In
the present report are given investigation results of the structure, morphology
of a surface and physical properties of epitaxia Pb1-xMnxTe (x=0.02) films grown
by the «hot wall» method in ultrahigh vacuum ( ?(3 ? 5) ?10- 9 Torr) unit with
oil free evacuation. It is established, that at ultrahigh vacuum residual
pressure of gases in working volume plays an appreciable role during growth of
epitaxial films with perfect structure and high electrophysical properties.
Comparison and generalization of the received results with other A4B6
chalcogenides grown in ultrahigh vacuum have been carried out.
Keywords:
Semimagnetic semiconductor, nanolayer, sensitive, detector, infrared,
electroluminescence, photoluminescence, energy spectrum, ultrahigh vacuum
Full Paper, pp. 130-136
Intuitive
Robot Programming for Automation of Low Standardized Logistic Processes
by M. Rohde, S. Kunaschk, M. Lutjen, F.
Ahrlich, A.-K. Pallasch
Abstract: The increasing
globalization of trade flows causes a continuous growth of packaged goods and
results in an increasing demand for handling of general cargo. Due to low
standardized logistic processes, the use of automation technologies for
improving the handling efficiency is very challenging. Depending on requests of
suppliers and customers, the logistics service providers have to develop
individual solutions for logistics processes. If automation technology, e.g.
industrial robots, is used to optimize the processes, it has to adapt to changed
conditions. This leads to complex systems and time-consuming tasks of robot
programming. In order to face this challenge, this paper presents an approach
for intuitive control of robots by using a cyber physical system (CPS). First,
it describes challenges for automation of logistic processes and discusses the
main idea of cyber physical systems. Subsequently, the concept of cyber physical
robotic systems for logistics (CPRSL) is depicted and an example application is
given, which bases on robot programming by demonstration (PbD). Within the
logistic task of “depalletizing boxes” the system is tested and evaluated.
Keywords:
Cyber physical systems, human machine interface, industrial robots, robotic in
logistics
Full Paper, pp. 137-145
Real Genetic
Algorithm Based Fuzzy–AHP Approach to Congestion Relief via UPFC
by H. Iranmanesh, M. Rashidi-Nejad
Abstract: Power systems may
not capable of utilizing full transmission capacity. Restructuring of
electricity industry may need some management criteria in order to improve
technical as well as economical efficiency. Under the new scheme of power
markets, congestion management is a crucial problem that is needed to be
considered. One of the most important issues related to restructured power
systems is congestion transmission. Congestion relief can be handled using FACTS
devices, where transmission capability may be improved. The optimal location of
UPFC (Unified power flow controller) to relieve congestion in the network is
proposed. In congestion management, the objective function is nonlinear hence
for solving this function real genetic algorithm (RGA) is used for optimization
process while analytical hierarchy process (AHP) with fuzzy sets is implemented
to evaluate RGA fitness function. The above method is tested on modified IEEE
5-bus system.
Keywords:
Congestion Relief, Transmission Capability, Real Genetic Algorithm, Fuzzy Sets,
UPFC
Full Paper, pp. 146-153
PID Control
Strategy for Sensor Random Packet Dropouts in Networked Control System
by Eva Miklovicova, Marian Mrosko
Abstract: In this paper the
control strategy for networked control systems is proposed that is able to deal
with the problem of data packet dropout at the sensor-controller link. The PID
control structure implemented in Simatic S7-200 programmable logical controller
is considered. The control design is based on the generalized predictive control
(GPC) where the sequence of future control inputs sequence up to a given horizon
is calculated at each sampling instant which can be stored and used at next
sampling instants in case the current output value is not available. The PID
controller tuning rules are obtained by equating the PID control law with the
pole-placement control structure of GPC given some conditions on the plant model
orders. The proposed control strategy is implemented as switched control system
where two or more control laws are switched arbitrarily often. The closed loop
stability is investigated using the concept of quadratic stability.
Keywords:
Networked control system, PID controller, model predictive control, data dropout
Full Paper, pp. 154-162
Verification of the
Behavior of Deck Bridges with Encased Filler Beams
by V. Kvocak, V. Kozlejova, M.
Karmazinova
Abstract: This paper
pertains the experimental research into filler-beam deck bridges with encased
beams of various sections.For more effective steel utilization inverted
T-sections are used. Resistances of deck bridges using various types of
composite action between steel members/filler beams and concrete are compared.
Design values of resistance moment for individual types of beam are calculated
according to Eurocode 4. The theoretical calculations and their results are
further verified in experiments.
Keywords:
Deck bridges, beam, composite action, resistance moment
Full Paper, pp.
163-170