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

作者： Liu, Jun Teel, Andrew R. Department of Automatic Control and Systems Engineering University of Sheffield SheffieldS1 3JD United Kingdom Center for Control Dynamical Systems and Computation Department of Electrical and Computer Engineering University of California Santa BarbaraCA93106 United States

ISBN: (纸本)9783902823625

Hybrid systems with memory are dynamical systems exhibiting both hybrid and delay phenomena. We present a general modelling framework for such systems using hybrid functional inclusions, whose generalized solutions are defined on hybrid time domains and evolve in the phase space of hybrid memory arcs equipped with the graphical convergence topology. We prove a general existence result based on some basic conditions on the data of hybrid systems. We further establish sufficient conditions for the stability analysis of hybrid systems with memory using Lyapunov-Razumikhin (L-R) functions. We demonstrate the stability results on a general nonlinear system with switching dynamics and state jumps. © IFAC.

关键词： System stability

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Design of the scales for the power boiler fuel feeding system based on the process identification

Design of the scales for the power boiler fuel feeding syste...

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作者： Bialic, G. Zmarzly, M. Stanislawski, R. Department of Electrical Engineering Automatic Control and Computer Science Opole University of Technology 31 K. Sosnkowskiego St. PL45-272 Opole Poland

ISBN: (纸本)9783902661555

In the paper the mathematical modeling methods were employed to solve the problem of fuel mass estimation supplied to the power generating boiler grid. It was shown that popular polynomial and neural network based identification algorithms can be used to measure amount of fuel supplied to the boiler combustion chamber. Furthermore the original conception and exemplary realization of the mass stream measuring system was presented.

关键词： Boilers

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Algorithm for Path Planning of Mobile Robot 24

Algorithm for Path Planning of Mobile Robot

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24th International Conference on Soft Computing and Measurements, SCM 2021

作者： Das, Nimai Chandra Uddin, Raihan Haque Zim, Md. Ziaul Skakun, Anastasiia D. Department of Automatic Control Systems Saint-Petersburg Electrotechnical University Leti Saint Petersburg Russia Daffodil International University Department of Software Engineering Dhaka Bangladesh Daffodil International University Department of Computer Science and Engineering Dhaka Bangladesh

ISBN: (纸本)9781665439749

Research in Unmanned Surface Vehicles (USVs) and Autonomous Mobile Robots navigation has demonstrated some success in navigating flat indoor environments while avoiding obstacles. But in common resilience to unsafe conditions, unmanned surface vehicles (USVs) and autonomous mobile robots have wide applications in security reconnaissance, investigation of an obscure domain, and crisis reaction. Various examinations have been directed on the driving mechanism, motion planning, and trajectory tracking strategies for robots, yet restricted investigations have been led with respect to the obstacle detection and avoiding ability of robots. However, for little scale robots that contain sensitive surveillance sensors and can't afford to utilize heavy defensive shells, the nonappearance of obstacle avoidance solutions arrangements would leave the robot helpless before possibly risky hindrances. In this paper, we present an algorithm for obstacle detection and avoidance system has been developed for miniature Unmanned Surface Vehicles (USVs) and autonomous mobile robots. We show an investigation differentiating heading build rules and relative course directions dodging distinctive operators in multi-specialist conditions, estimating separation between the two robots. The integration of distance measurement and avoiding other robots or obstacles is our observation in a multi-robot environment, where obstacles are also available. In this paper, we have discussed two algorithms, one will try to avoid other robot or obstacles and another will try to measure the distance between main agents to another agent. It utilizes an algorithm so that the system is both compact and power efficient. The proposed system can detect not only the presence, but also the approaching direction of a ferromagnetic obstacle. Therefore, an intelligent avoidance behavior can be generated by adapting the trajectory tracking method with the detection information. Design optimization is conducted to enhance

关键词： Multi agent systems

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A new watershed algorithm for protein spot detection in 2DGE images using the notion of fuzzy relations

A new watershed algorithm for protein spot detection in 2DGE...

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2010 2nd International Conference on computer Technology and Development, ICCTD 2010

作者： Rashwan, Shaheera Faheem, Talaat Sarhan, Amany Youssef, Bayumy A.B. Informatics Research Institute Mubarak City for Science and Technology Borg ElArab Alexandria Egypt Computer Science and Automatic Control Department Faculty of Engineering Tanta University Tanta Egypt

ISBN: (纸本)9781424488438

An important issue in the analysis of two-dimensional electrophoresis images is the detection and quantification of protein spots. The main challenges in the segmentation of 2DGE images are to separate overlapping protein spots correctly and to find the abundance of weak protein spots. To enable comparison of protein patterns between different samples, it is necessary to match the patterns so that homologous spots are identified. In this paper we describe a new robust technique to segment and model the different spots present in the gels. The watershed segmentation algorithm is modified to handle the problem of over segmentation by initially partitioning the image to mosaic regions using the composition of fuzzy relations. The experimental results showed the effectiveness of the proposed algorithm to overcome the over segmentation problem associated with the available algorithms. © 2010 IEEE.

关键词： Electrophoresis

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control of discrete linear repetitive processes with application to a material rolling process

Control of discrete linear repetitive processes with applica...

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2003 European control Conference, ECC 2003

作者： Sulikowski, B. Galkowski, K. Rogers, E. Owens, D.H. Institute of Control and Computation Engineering University of Zielona Góra Poland Department of Electronics and Computer Science University of Southampton SouthamptonSO17 1BJ United Kingdom Department of Automatic Control and Systems Engineering University of Sheffield United Kingdom

ISBN: (纸本)9783952417379

Repetitive processes are a distinct class of 2D systems of both systems theoretic and applications interest. They cannot be controlled by direct extension of existing techniques from either standard or 2D systems theory. Here we give new results on the design of physically based feedback control laws. These results relate to design for performance and are illustrated on data for a model which arises in the modelling of a physical process. © 2003 EUCA.

关键词： System stability

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Automated Hard Real-Time Scheduling

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IFAC Proceedings Volumes 1995年第5期28卷 241-246页

作者： Adrian R. Browne Julian M. Bass Peter R. Croll Peter J. Fleming Department of Automatic Control and Systems Engineering University of Sheffield UK Department of Computer Science University of Sheffield UK

The task of guaranteeing that processes meet their deadlines is one of the most complex in the design of hard real-time control systems. This paper describes how process scheduling has been integrated into a framework of tools for the development of such systems. Functional specifications in the form of control system block diagrams are translated by the Framework into real-time source code which may be executed in a parallel processing environment. The automated off-line scheduling tool takes process specifications from the system under development and attempts to map these processes to the processors in such a way that all the system deadlines are met by using a detailed model of the run-time environment.

关键词： CASE real-time systems parallel processing scheduling algorithms software tools genetic algorithms

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Population Growth and Economic Development - General Equilibrium Simulations

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IFAC Proceedings Volumes 1987年第9期20卷 611-616页

作者： Shan Feng Department of Automatic Control Engineering and Computer Science Huazhong University of Science and Technology Wuhan Hubei PRC

The paper presents a demographic-economic simulation model DEM-CEM system. Our efforts at building the DEM-CEM system focus on the construction of an age, sex, region, educational attainment level and skill level specified, five dimensional population model—DEM. And integrate the DEM to a Computable general equilibrium model (CGE model) of economic development—CEM. The DEM-CEM system relates population dynamics to economic development of a representative developing country. The simulation's major intended output is illustration of different dynamic path of the economy subject to alternative policy choices. The demographic factor as a policy variable reflects both the quantity and the quality change of the population and labor force over time, and influences the national economic development through channels of the formation of human capital, e.g. formal education system, on-the-job training program, health services etc. Simulations constructed under various historical and policy counterfactual hypotheses, are reported. The results were compatible with much of the earlier literature and certain new results offer a useful foundation for furture quantitative work of policy counterfacutal study.

关键词： Closed loop systems Demography Determinants Developing countries Education Feedback Human factors Nonlinear systems Population

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Development of an "Artificial Lung" System for Use in Indoor Air Quality Testing 21st

Development of an "Artificial Lung" System for Use in Indoor...

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21st Polish control Conference, PCC 2023

作者： Kozyra, Andrzej Lipczynska, Aleksandra Koper, Piotr Babisz, Radoslaw Madej, Damian Nowakowski, Konrad Karwatka, Jakub Tomczok, Dominik Department of Measurements and Control Systems Faculty of Automatic Control Electronics and Computer Science Silesian University of Technology Gliwice Poland Department of Heating Ventilation and Dust Removal Technology Faculty of Energy and Environmental Engineering Silesian University of Technology Gliwice Poland

ISBN: (纸本)9783031351693

"Artificial lung" is a device that simulates breathing process of occupants in a room. This allows you to safely test, e.g., the impact of HVAC systems on the spread of pathogens. The paper describes the concept of the device, its construction and performed tests. The project was implemented by students of two faculties: automatic control, Electronics and computer Science, and Energy and Environmental engineering. Project supervisors from both faculties provided substantive supervision and support for students. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2023.

关键词： Air quality

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Wireless ventilation control for large-scale systems: The mining industrial case

Wireless ventilation control for large-scale systems: The mi...

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2009 6th IEEE Annual Communications Society Conference on Sensor, Mesh and Ad Hoc Communications and Networks Workshops, SECON Workshops 2009

作者： Di Benedetto, M.D. Innocenzo, A.D. Fischione, C. Isaksson, A.J. Johansson, K.H. Niculescu, S.-I. Olaru, S. Sandou, G. Santucci, F. Serra, E. Tennina, S. Tiberi, U. Witrant, E. Control Systems Department Universit'e Joseph Fourier / GIPSA-lab Grenoble France Department of Electrical and Computer Engineering DEWS - University of L'Aquila L'Aquila Italy Automatic Control Department SUPELEC Gif sur Yvette France ABB Corporate Research Vasterås Sweden Automatic Control Department KTH Stockholm Sweden LSS-SUPELEC Gif-sur-Yvette France

ISBN: (纸本)9781424439386

Mining ventilation is an interesting example of a large scale system with high environmental impact where advanced control strategies can bring major improvements. Indeed, one of the first objectives of modern mining industry is to fulfill environmental specifications [1] during the ore extraction and crushing, by optimizing the energy consumption or the production of polluting agents. The mine electric consumption was 4 % of total industrial electric demand in the US in 1994 (6 % in 2007 in South Africa) and 90 % of it was related to motor system energy [2]. Another interesting figure is given in [3] where it is estimated that the savings associated with global control strategies for fluid systems (pumps, fans and compressors) represent approximately 20 % of the total manufacturing motor system energy savings. This motivates the development of new control strategies for large scale aerodynamic processes based on appropriate automation and a global consideration of the system. More specifically, the challenge in this work is focused on the mining ventilation since as much as 50 % or more of the energy consumed by the mining process may go into the ventilation (including heating the air). It is clear that investigating automatic control solutions and minimizing the amount of pumped air to save energy consumption (proportional to the cube of airflow quantity [4]) is of great environmental and industrial interest. © 2009 IEEE.

关键词： Energy utilization

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Modeling of hot rolling industrial process using fuzzy logic

Modeling of hot rolling industrial process using fuzzy logic

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22nd International Conference on computer Applications in Industry and engineering 2009, CAINE 2009

作者： Sheta, A. Öznergiz, E. Abdelrahman, M.A. Babuska, R. Giza Egypt Automatic Control Department Mechanical Engineering Faculty Istanbul Technical University Istanbul 34437 Turkey Electrical and Computer Engineering Department Tennessee Technological University Cookeville TN 38505 United States Delft Center for Systems and Control Delft University of Technology Netherlands

ISBN: (纸本)9781615676668

Steel making is known as a complex manufacturing industrial process. Automation of the process represents a challenge. Empirical mathematical modeling of the process was used to design mill equipment, ensure productivity and service quality. This modeling approach shows many problems associated to complexity and time consumption. Soft computing techniques show significant modeling capabilities on handling complex nonlinear systems modeling. In this paper, we explore the use of Takagi-Sugeno (TS) technique to develop fuzzy models for the Hot-Rolling industrial nonlinear process. We propose three models for the rolling force, torque and slab temperature. A set of rules and membership functions which represents the dynamical relationship between the input and output of these models shall be presented. The performance of the fuzzy models will be compared to the known empirical models for the hot rolling system. Experimental data measured from the Ere˜gli Iron and Steel Factory in Turkey shall be used for the verification of the model outstanding performance.

关键词： Hot rolling

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