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International Conference on System Theory, control, and Computing (ICSTCC)

作者： Mihai Postolache Faculty of Automatic Control and Computer Engineering “Gheorghe Asachi” Technical University of Iasi Iasi Romania

Embedded network systems use serial communication protocols and simplified media access control schemes in order to exchange information among several interconnected nodes. Within this paper a generalization of the classical media access control (MAC) protocols used in small embedded serial networks of microcontrollers is investigated and an implementation platform for testing the proposed MAC schemes is described. Thus, the classic master-slave and token-bus protocols turn out to be just two particular cases of the proposed generalized media access control (GMAC) algorithms: a centralized and a distributed one, respectively. By applying these generalized algorithms in practice, significant increase in data throughput is obtained, as it resulted from the simulation tests and then by practical implementation on a typical embedded network of microcontrollers.

关键词： Media Access Protocol Media Master-slave Monitoring Embedded systems Communication channels

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Remote administration of hardware resources using TCP/IP protocol and WEB technologies

Remote administration of hardware resources using TCP/IP pro...

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International Conference and Exposition on Electrical and Power engineering (EPE)

作者： Catalin Damian Eduard Lunca Mircea Ilinca Faculty of Electrical Engineering Technical University of Iasi Romania Faculty of Automatic Control and Computer Engineering Technical University of Iasi Romania

This paper presents a combination of programming languages and web technologies used to deploy a modern remote controlled system. The hardware part of the system is a parallel port interface board that contains different types display devices, user-input components and some relays. The system functionality is based on some software applications developed using different techniques: the communication between the parallel interface, local computer and webserver PC is based on standard C, the user interface is developed using php, mysql, html and javascript technologies. Users can access full resources of the system if they are registered or only some demonstration and training sections as guest users.

关键词： Hardware IP networks computers Databases Ports (computers) Software Servers

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Implementation of software changes in programming techniques learning

Implementation of software changes in programming techniques...

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International Conference and Exposition on Electrical and Power engineering (EPE)

作者： Catalin Damian Mircea Ilinca Faculty of Electrical Engineering Technical University of Iasi Romania Faculty of Automatic Control and Computer Engineering Technical University of Iasi Romania

This paper presents a study about how efficient implementation of software changes helps students to better understanding of programming techniques and algorithms. The study is performed during last three years on first year students, considering applications classes for two first year courses: computer programming part I and part II. There are taken into account some partial results during the semester, final exams and also some questionnaires accomplished by students. The ratings for this study are imported from a database. The study is regarding around eight hundred students.

关键词： Education Programming profession Mathematical model Encoding computer languages Software

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Artificial intelligence modelling methodologies applied to a polymerization process

Artificial intelligence modelling methodologies applied to a...

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International Conference on Simulation and Modeling Methodologies, Technologies and Applications (SIMULTECH)

作者： Silvia Curteanu Elena-Niculina Dragoi Florin Leon Cristina Butnariu Faculty of Chemical Engineering and Environmental Protection “Gheorghe Asachi” Technical University of Iasi Iasi Romania Faculty of Automatic Control and Computer Engineering Bucharest Romania

A series of modelling methodologies based on artificial intelligence tools are applied to solve a complex real-world problem. Neural networks and support vector machines are used as models and differential evolution and clonal selection algorithms as optimizers for structural and parametric optimization of the models. The goal is to make a comparative analysis of these methods for the case study of the free radical polymerization of styrene, a complex, difficult to model process, where the monomer conversion and molecular masses are predicted as a function of reaction conditions, i.e. temperature, amount of initiator and time. Four modelling methodologies are developed and evaluated in terms of accuracy.

关键词： Support vector machines Kernel Computational modeling Testing Polymers Manganese Optimization

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ANFIS based Jacobian for a parallel manipulator mobility assistive device 10

ANFIS based Jacobian for a parallel manipulator mobility ass...

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10th UKACC International Conference on control, control 2014

作者： Asker, Ahmed Salah, Omar Fath El-Bab, Ahmed M. R. Ramadan, Ahmed A. Assal, Samy M. F. Sessa, Salvatore Abo-Ismail, Ahmed School of Innovative Design Engineering Egypt-Japan University for Science and Technology E-JUST New-Borg-El-Arab-City-Alexandria Egypt Mechanical Engineering Dept Faculty of Engineering Assiut University Assiut Egypt Dept. of Production Engineering and Mechanical Design Faculty of Engineering Tanta University Tanta Egypt Computer and Automatic Control Dept Faculty of Engineering Tanta University Tanta Egypt Graduate School of Creative Science and Engineering Waseda University Tokyo Japan

ISBN: (纸本)9781479950119

Nowadays parallel manipulators are used widely in bioengineering applications;this leads to many exciting expectations as well as challenges. The kinematic analysis of parallel manipulators with their differential kinematics yielding the Jacobian in a closed form is not a trivial task. In this paper a parallel manipulator based mobility assistive device called EJADII is analyzed to determine forward kinematics, inverse kinematics and closed-form Jacobian. An Adaptive Neuro-Fuzzy Inference System (ANFIS) is trained to estimate the Jacobian. This system would be useful when determination of the Jacobian in a closed-form is difficult to determine. The human motion during sit to stand captured by VICON experiment is used with two assisting scenarios to train and verify this system. computer simulations show relatively good results of the proposed system. © 2014 IEEE.

关键词： Inverse kinematics

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Semantic report search engine — Questor

Semantic report search engine — Questor

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International Conference on System Theory, control, and Computing (ICSTCC)

作者： Andrei Vasilateanu Nicolae Goga Alin Moldoveanu Faculty of Engineering in Foreign Languages University Politehnica of Bucharest Romania Faculty of Automatic Control and Computer Science University Politehnica of Bucharest Romania

As ever more data is collected in the business processes of large enterprises, the decision makers need new business intelligence tools. Enterprise reporting tools have been available for some time, however, while reports aggregate business data, the large number of reports can become unmanageable. The European funded project Questor aims to create a revolutionary product that will eliminate the complexities inherent in the report management workflow. The final purpose is to make querying the report database as simple as addressing a question in natural language. This paper gives an overview over the concept of the Questor project, its software architecture, algorithms and results.

关键词： Ontologies Search engines Semantics Engines Crawlers Databases Resource description framework

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Embedding of nonlinear systems in a linear parameter-varying representation 19

Embedding of nonlinear systems in a linear parameter-varying...

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19th IFAC World Congress on International Federation of automatic control, IFAC 2014

作者： Abbas, Hossam S. Tóth, Roland Petreczky, Mihály Meskin, Nader Mohammadpour, Javad Department of Electrical Engineering College of Engineering Qatar University PO Box 2713 Doha Qatar Control Systems Group Eindhoven University of Technology P.O. Box 513 Eindhoven5600 MB Netherlands Department of Computer Science and Automatic Control Ecole des Mines de Douai Douai59508 France Intelligent Control Systems Lab. College of Engineering University of Georgia AthensGA30602 United States Electrical Engineering Department Faculty of Engineering Assiut University Assiut Egypt

ISBN: (纸本)9783902823625

This paper introduces a systematic approach to synthesize linear parameter-varying (LPV) representations of nonlinear (NL) systems which are originally defined by control affine state-space representations. The conversion approach results in LPV state-space representations in the observable canonical form. Based on the relative degree concept of NL systems, the states of a given NL representation are transformed to new coordinates that provide its normal form. In the SISO case, all nonlinearities of the original system are embedded in one NL function which is factorized to construct the LPV form. An algorithms is proposed for this purpose. The resulting transformation yields an LPV model where the scheduling parameter depends on the derivatives of the inputs and outputs of the system. In addition, if the states of the NL model can be measured or estimated, then the procedure can be modified to provide LPV models scheduled by these states. Examples are included for illustration. © IFAC.

关键词： State space methods

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Managed N-gram language model based on Hadoop framework and a Hbase tables

Managed N-gram language model based on Hadoop framework and ...

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The International Conference on Informatics and Systems (INFOS)

作者： Tahani Mahmoud Allam Alsayed Abdelhameed Sallam Hatem M. Abdullkader Computer and Automatic Control Department Faculty of Engineering Tanta University Tanta Egypt Information System Department Faculty of Computers and Information Menofia University Menofia Egypt

N-grams are a building block in natural language processing and information retrieval. It is a sequence of a string data like contiguous words or other tokens in text documents. In this work, we study how N-gram can be computed efficiently using a MapReduce for distributed data processing and a distributed database named Hbase This technique is applied to construct the training and testing processes using Hadoop MapReduce framework and Hbase. We proposed to focus on the time cost and storage size of the model and exploring different structures of Hbase table. By constructing and comparing a different table structures on training 100 million words for unigram, bigram and trigram models we suggest a table based on half ngram structure is a more suitable choice for distributed language model. The results of this work can be applied in the cloud computing and other large scale distributed language processing areas.

关键词： Computational modeling Training Smoothing methods Context Testing Informatics Distributed computing

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Stand for testing the electrical race car engine

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IOP Conference Series: Materials Science and engineering 2015年第1期95卷

作者： M Baier J Franiasz P Mierzwa D Wylenzek Silesian University of Technology Faculty of Mechanical Engineering 18A Konarskiego Street 44-100 Gliwice Poland Silesian University of Technology Faculty of Automatic Control Electronics and Computer Science 16 Akademicka Street 44-100 Gliwice Poland

An engine test stand created especially for research of electrical race car is described in the paper. The car is an aim of Silesian Greenpower project whose participants build and test electrical vehicles to take part in international races in Great Britain. The engine test stand is used to test and measure the characteristics of vehicles and their engines. It has been designed particularly to test the electric cars engineered by students of Silesian Greenpower project. The article contains a description how the test stand works and shows its versatility in many areas. The paper presents both construction of the test stand, control system and sample results of conducted research. The engine test stand was designed and modified using PLM Siemens NX 8.5. The construction of the test stand is highly modular, which means it can be used both for testing the vehicle itself or for tests without the vehicle. The test stand has its own wheel, motor, powertrain and braking system with second engine. Such solution enables verifying various concepts without changing the construction of the vehicle. The control system and measurement system are realized by enabling National Instruments product myRIO (RIO - Reconfigurable Input/Output). This controller in combination with powerful LabVIEW environment performs as an advanced tool to control torque and speed simultaneously. It is crucial as far as the test stand is equipped in two motors - the one being tested and the braking one. The feedback loop is realized by an optical encoder cooperating with the rotor mounted on the wheel. The results of tests are shown live on the screen both as a chart and as single values. After performing several tests there is a report generated. The engine test stand is widely used during process of the Silesian Greenpower vehicle design. Its versatility enables powertrain testing, wheels and tires tests, thermal analysis and more.

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Longitudinal control of vehicle platoons for stop-and-go waves mitigation

Longitudinal control of vehicle platoons for stop-and-go wav...

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International Conference on System Theory, control, and Computing (ICSTCC)

作者： Constantin F. Caruntu Cosmin Copot Corneliu Lazar Robin De Keyser Faculty of Automatic Control and Computer Engineering Gheorghe Asachi Technical University of Iasi Iasi Romania Department of Electrical energy Systems and Automation Ghent University Ghent Belgium

The increased traffic flow on both existing highways and city roads leads to the appearance of stop-and-go waves which have many disadvantages, e.g., increased risk of accidents, higher fuel consumption, increased pollution, increased wear of vehicle mechanical parts, driving stress and passenger discomfort. The platooning of vehicles could be the solution to this problem by enforcing them to follow each other and to maintain a safe distance between them. The advantages brought by this solution depend on ensuring the string stability of the vehicle platoon. In this paper the leader-follower system is employed to illustrate the stop-and-go waves mitigation. Several controllers (P, PI) were designed based on the conditions that have to be met in order to ensure the string stability of the vehicle platoon and comparisons were made with a controller based on the driver behavior.

关键词： Vehicles Mobile robots Accidents Stability criteria Transfer functions

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