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International Conference on control, Instrumentation, and Automation

作者： M. Azimi M. T. H. Beheshti A. Badpa H. Shokouhi Nejad Faculty of Electrical and Computer Engineering Tarbiat Moalem University Tehran Iran Faculty of Electrical and Computer Engineering Tarbiat Modares University (TMU) Tehran IRAN Control Engineering Department School of Electrical and Computer Engineering Tarbiat Moalem University Tehran Iran Control Systems Theory Tarbiat Modares University (TMU) Tehran Iran Electrical and Computer Engineering Tarbiat Modares University (TMU) Tehran IRAN

This paper concerns the tracking control problem for a class of nonlinear networked control systems (NCSs) with external disturbances. A Takagi-Sugeno fuzzy model is employed to represent the nonlinear controlled plant in the NCSs. Both network-induced delay and packet dropout are addressed. The control scheme is based on a parallel distributed compensation (PDC) structure, a fuzzy observer and a H ∞ performance to attenuate the external disturbances. The stability of the whole closed-loop model is investigated using a general Lyapunov-Krasovskii functional. The key point of the proposed approaches is to achieve conditions under a linear matrix inequalities (LMI) formulation in the case of a disturbed T-S fuzzy model. This formulation facilitates obtaining solutions through interior point optimization methods for some nonlinear NCSs tracking problems. A numerical example is used to illustrate the validity of the design methodology.

关键词： Delay Observers Bismuth Instruments Automation Stability criteria

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Identification of Box-Jenkins Models for Parameter-Varying Spatially Interconnected systems

Identification of Box-Jenkins Models for Parameter-Varying S...

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American control Conference

作者： Mukhtar Ali Ahsan Ali Hossam Abbas Herbert Werner Institute of Control Systems Hamburg University of Technology Eissendorfer Str. 40 21073 Hamburg Germany Electrical Engineering Department Faculty of Engineering Assiut University 71516 Assiut Egypt

ISBN: (纸本)9781457700811;9781457700804

This paper presents an identification technique to identify models for Parameter-Varying Spatially Interconnected systems. The main focus of the note is the case when there is additive colored noise in the output of the data generating system. A Refined Instrumental Variable method is proposed to identify parameter-varying spatially interconnected models with Box-Jenkins structure. The technique allows identification of models for general multi-dimensional systems, which may be separable or non-separable, causal, semi-causal (spatially interconnected systems) or non-causal. The effectiveness of the method is shown with application to simulation example.

关键词： large-scale systems Colored noise Separable instrumental variable technique Authentication data generation

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Low power and fast DCT architecture using multiplier-less method

Low power and fast DCT architecture using multiplier-less me...

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2011 Faible Tension Faible Consommation, FTFC 2011

作者： El Aakif, M. Belkouch, S. Chabini, N. Hassani, M.M. Embedded Systems and Digital Control Laboratory National School of Applied Sciences University of Cadi Ayyad Av. Abdelkarim Khattabi Guéliz Marrakech Morocco Department of Electrical and Computer Engineering Royal Military College of Canada Kingston ON Canada Faculty of Sciences Semlalia University of Cadi Ayyad Marrakech Morocco

ISBN: (纸本)9781612846477

In this paper, a low power and fast DCT (Discrete Cosine Transform) using multiplier-less method is presented with a new modified FGA (Flow-Graph Algorithm), which is derived from our previously presented FGA of DCT based on Loeffler algorithm. The multiplier-less method is based on the replacement of multiplications with a minimum number of additions and shifts. The proposed FGA is performed and compared to a previous one. The results of FPGA implementations on Altera Cyclone II show the increase of the maximum frequency, the decrease of the resources usage and the reduction of the dynamic power by 7.2 % at 120 MHz of clock frequency with a new proposed FGA algorithm. Another comparison with recent published results has been done and proves the efficiency of the proposed FGA. © 2011 IEEE.

关键词： Field programmable gate arrays (FPGA)

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Hybrid neural-fuzzy control of the single-phase induction machine

Hybrid neural-fuzzy control of the single-phase induction ma...

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2011 International Conference on Communications, Computing and control Applications, CCCA 2011

作者： Bouhoune, K. Yazid, K. Boucherit, M.S. Power and Industrial Systems Laboratory Faculty of Electronics and Informatics University of the Sciences and Technology Houari Boumediene B.P 32 El Alia Bab Ezzouar 16111 Alger Algeria Process Control Laboratory Department of Electrical Engineering Polytechnic National School 10 Hassan Badi El-Harrach Algiers Algeria

ISBN: (纸本)9781424497959

The single-phase induction machine has the advantage of being powered by a single-phase voltage source. The availability of this power allows it to be widely used: electric household appliances, portable machine tools... However, this type of machine has not yet taken its whole share from various works present until now, in comparison with the three-phase asynchronous machine. We propose by the means of this article, an approach combining the performances of the commands which are based on the tools of the artificial intelligence (neural networks and fuzzy logic) in the form of a hybrid control (neural-fuzzy - fuzzy) applied to control the single-phase induction motor supplied by PWM inverter. The simulation results show the feasibility and good performance obtained by the proposed control. Namely, improved response time and robustness of the system overlooked the disruption caused by the application of a load torque or speed rungs on the dynamics of the global system. That reinforces the principle of vector control with a good decoupling between the electromagnetic torque and rotor flux. © 2011 IEEE.

关键词： Domestic appliances

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Sensorless direct torque control of five-phase induction motor drives

Sensorless direct torque control of five-phase induction mot...

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Annual Conference of Industrial Electronics Society

作者： B. S. Khaldi H. Abu-Rub A. Iqbal R. Kennel M. O. Mahmoudi D. Boukhetala Department of Electrical Engineering Faculty of Science and Engineering Djelfa University Algeria Laboratory of Process Control National Polytechnic School Algiers Algeria Institute for Electrical Drive Systems and Power Electronics Technische Universität München Munich Germany Department of Electrical & Computer Engineering Texas A&M University at Qatar Doha Qatar Department of Electrical Engineering College of Engineering Qatar University Qatar Department of Electrical Engineering Aligarh Muslim University Aligarh India

This paper presents a simple and novel sensorless scheme for five-phase induction motor control. The power measurement is used for speed computation. The drive is controlled using direct torque control (DTC). Speed sensorless control scheme is tested under speed variation and load changes. The control method is simulated and implemented in real time on the DS1103 board.

关键词： Vectors Stators Torque Rotors Induction motors Torque control Electromagnetics

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A Review of Energy Efficiency in Data Processing Centers

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Journal of Energy and Power engineering 2011年第4期5卷 361-372页

作者： C. Redondo A. Fern/mdez Castile and Leon Technological Center for Supercomputing （FCSC） Edificio CRAI- TIC Campus de Vegazana s/n University of Le6n E-24071-Lean Spain Electrical Engineering and Systems Engineering and Automatic Control Department Faculty of lndustrial and Computer Engineering University of Leon E-24071-Leon Spain

This article explores, through a case study, measures of energy efficiency in data processing centers. An analysis of this case demonstrates how the design criteria could improve the rate of consumption in IT centers, which is currently the second most contaminating industry on the planet, and is the responsible for 2% of CO2 emissions, surpassed only by the aeronautical industry. The present and future situation of IT center energy consumption and associated environmental effects is analyzed, and also looks at how state-of-the-art technology, correctly implemented, could ensure significant rationalization of data processing center energy consumption. The article will examine optimization techniques, specific problems and case studies.

关键词： Energy management data processing centers energy efficiency.

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A new decoupling approach using the Fuzzy Logic In the vector control block of the single-phase induction machine

A new decoupling approach using the Fuzzy Logic In the vecto...

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International Aegean Conference on electrical Machines and Power Electronics, ACEMP

作者： Kenza Bouhoune Krim Yazid Mohamed Seghir Boucherit Power and Industrial Systems Laboratory Faculty of Electronics and Informatics University of the Sciences and Technology Houari Boumediene Algiers Algeria Process Control Laboratory Department of Electrical Engineering Polytechnic National School Algiers Algeria

The single-phase induction machine (SPIM) has the advantage of being powered by a single-phase voltage source. The availability of this power allows it to be widely used: electric household appliances, portable machine tools... However, this type of machine has not yet taken its whole share from various works present until now, in comparison with the three-phase induction machine. With the object of contributing to the study of this machine, we propose in this article a new decoupling approach in the vector control block, based on the the Fuzzy Logic; in order to solve the problem of decreasing the rotor flux. Indeed, the vector control of single phase induction machine using conventional decoupling approaches has a remarkable decrease of rotor flux when the machine is powered by a real voltage source inverter (VSI). For three different decoupling approaches with two types of supply: perfect voltage source and real voltage source inverter; a comparative study through numerical simulations is presented. The simulation results show the feasibility and good performance obtained by the proposed approach.

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A special-purpose embedded controller for an implantable spinal cord stimulation system

A special-purpose embedded controller for an implantable spi...

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Iranian Conference of Biomedical engineering (ICBME)

作者： Hajar Nikbakht Amir M. Sodagar Mahmood Seifouri Saeid Barati Research Laboratory for Integrated Circuits and Systems (ICAS) Faculty of ECE K. N. Toosi University of Technology Tehran Iran Electrical and Computer Engineering Department Shahid Rajaee Teacher Training University Tehran Iran Ecole Polytechnique de Montreal Montreal QUE Canada Electrical and Computer Engineering Department Shahid Rajaee Teacher Training University Tehran Iran

This paper reports on a special-purpose controller dedicated to an implantable spinal cord electrical stimulation (SCS) microsystem. The controller supports parallel biphasic stimulation pulses on 16 channels concurrently, and recording neural response on any one of the sites with 8 bits of resolution. Anodic and cathodic pulse amplitudes are programmable with 8 bits of resolution, while the timing of the pulses is controllable in the real time through the data packets receiving serially via a wireless link.

关键词： electrical stimulation Educational institutions Synchronization Wireless communication Pain Spinal cord

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Low power and fast DCT architecture using multiplier-less method

Low power and fast DCT architecture using multiplier-less me...

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Faible Tension Faible Consommation (FTFC)

作者： M. El Aakif S. Belkouch N. Chabini M. M. Hassani Embedded Systems and Digital Control Laboratory National School of Applied Sciences University of Cadi Ayyad Marrakech Morocco Department of Electrical and Computer Engineering Royal Military College of Canada Kingston ONT Canada Faculty of Sciences Semlalia University of Cadi Ayyad Marrakech Morocco

关键词： Discrete cosine transforms Hardware Computer architecture Power demand Field programmable gate arrays Algorithm design and analysis Equations

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Realization and a real testing of the road-fee system

Realization and a real testing of the road-fee system

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33rd International Conference on Telecommunications and Signal Processing, TSP 2010

作者： Šimák, V. Končelik, V. Hrbček, J. Folvarčik, J. Department of Control and Information Systems Faculty of Electrical Engineering University of Žilina Slovakia

ISBN: (纸本)9789638898104

Goal of this paper is description of electronic technologies in pilot project 1.2. The object of the pilot project is creation of working system parts. First chapter contains description of vehicle localization theory and a road tarification system. Next chapters are dedicated to realized devices. Conclusion contains description of wireless technologies utilization which is nowadays in state of experiments on breadboards.

关键词： Microcontrollers

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