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Simulation of Switched Reluctance machine with the operation at four-quadrant

Simulation of Switched Reluctance machine with the operation...

引用

World Congress on Intelligent control and Automation (WCICA)

作者： Hao Chen Xiuli Ju Jason J. Gu Pude Yu Liang Qu School of Information and Electrical Engineering China University of Mining and Technology Xuzhou China Department of Electrical and Computer Engineering Dalhousie University Halifax NS Canada School of Control Science and Engineering Shandong University Jinan Shandong China

An nonlinear simulation model of the Switched Reluctance machine with the operation at four-quadrant founded on MATLAB is presented. The simulation of the prototype with three given rotor speeds and four different loads are made. The simulated results on the rotor speed curves, the rotor speed ascending time and the phase current waveforms are given. It is shown that the operation of the Switched Reluctance machine at four-quadrant and the conversion course can be simulated efficaciously by the model. There is the impact phase current during the conversion course at four-quadrant. The phase current of the Switched Reluctance machine with the operation at four-quadrant is unipolar so that the unipolar power converter is need.

关键词： Load modeling Reluctance machines Computational modeling Rotors Switches Pulse width modulation Mathematical model

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Iterative learning control of a class of fractional order nonlinear systems

Iterative learning control of a class of fractional order no...

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IEEE International Symposium on Intelligent control (ISIC)

作者： Yan Li Hyo-Sung Ahn YangQuan Chen School of Control Science and Engineering Shandong University Shandong China Gwangju Institute of Science and Technology Gwangju South Korea Center for Self-Organizing and Intelligent Systems of Department of Electrical and Computer Engineering Utah State University Logan UT USA

This paper firstly addresses the convergence analysis of iterative learning control of a class of fractional order nonlinear systems using the generalized Gronwall-Bellman lemma. Detailed problem definition and conver... 详细信息

关键词： Nonlinear systems Convergence Simulation Fractional calculus Linear systems Differential equations Laplace equations

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Friction feedforward compensation and position feedforward in CNC machines

Friction feedforward compensation and position feedforward i...

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7th Annual International Conference on Electrical engineering/Electronics, computer, Telecommunications and Information Technology, ECTI-CON 2010

作者： Suteeratanapirom, Wijin Rattanawaorahirankul, Rapeepong Laosapan, Chutima Sanposh, Peerayot Chayopitak, Nattapon Tungpimolrut, Kanokvate Kunieda, Hiroaki TAIST Tokyo Tech ICTES Program Department of Electrical Engineering Kasetsart University 50 Phahonyothin Rd. Ladyao Jatujak Bangkok 10903 Thailand Intelligent Mechatronics Automation Robotics and Control Laboratory Department of Electrical Engineering Kasetsart University 50 Phahonyothin Rd. Ladyao Jatujak Bangkok 10903 Thailand Industrial Control and Automation Laboratory National Electronics and Computer Technology Center 112 Thailand Science Park Phahonyothin Rd. Klong 1 Klong Luang Pathumthani 12120 Thailand Department of Electrical and Electronic Engineering Tokyo Institute of Technology S3-65 2-12-1 Ookayama Meguro-ku Tokyo 152-8550 Japan

ISBN: (纸本)9789746724913

This research proposes a method to eliminate friction effect and reduced tracking error on CNC milling machines. A CNC milling machine has many connected mechanical components which have friction effects such as ball screws and rails. To control servo motors which are used to drive X-Y table in CNC milling machine, the conventional PID controller is widely used. In this research, Panasonic motor driver is set to the torque control mode. To compensate the friction effects, the friction feedforward compensation method is proposed. Moreover, to reduce the position tracking error, position feedforward controller is used. The simulation and implementation of position control in one axis of PID with Friction Feedforward Compensation and Position Feedforward controller (FFC-PFC) are presented.

关键词： Friction

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Continuous Noninvasive Blood Pressure Measurement by Near Infra Red CCD Camera and Pulse Transmit Time Systems

Continuous Noninvasive Blood Pressure Measurement by Near In...

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International Conference on computer engineering and Applications (ICCEA)

作者： Petr Zurek Ondrej Krejcar Marek Penhaker Martin Cerny Robert Frischer Department of Measurement and Control Faculty of Electrical Engineering and Computer Science VSB-Technical University of Ostrava Ostrava Czech Republic Department of Automation and Computing in Metallurgy Faculty of Metallurgy and Materials Engineering Technical University of Ostrava Ostrava Czech Republic

ISBN: (纸本)9781424460793;9780769539829

The need of continuous blood pressure measurement is usable in wide spectrum of applications from physicians practice to home care applications. Many types of blood pressure measurement devices can be bought in electronics shops. All such devices are contact measurement devices which need to be in contact of human body (hand or foot mainly). Secondary they allow only one measurement per several minutes interval (typically ones in 10 minutes). Our goal is to develop a small device for noninvasive continuous measurement of blood pressure. This device must be a small battery powered embedded system which measure a blood pressure during a long time period and send this information remotely to operator's stations. We would like to try two systems of blood pressure monitoring. The first one is system with NIR CCD camera (Near Infra Red), which measure the wide changes of the blood vessels and the second one is system, which measure the pulse transmit time (PTT). At the end we can compare the systems and get information, which system will be a right way to obtain exact continuous blood pressure information.

关键词： Pulse measurements Blood pressure Pressure measurement Time measurement Charge coupled devices Charge-coupled image sensors Biomedical monitoring Battery charge measurement Humans Foot

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On the Infinite Horizon Constrained Switched LQR Problem

On the Infinite Horizon Constrained Switched LQR Problem

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2010 49th IEEE Conference on Decision and control

作者： Maximilian Balandat Wei Zhang Alessandro Abate Department of Electrical Engineering and Information Technology Technische Universitat Darmstadt Darmstadt Germany Department of Electrical Engineering and Computer Science University of California Berkeley CA USA Delft Center for Systems and Control Technische Universiteit Delft Delft The Netherlands

ISBN: (纸本)9781424477456

This paper studies the Discrete-Time Switched LQR problem over an infinite time horizon subject to polyhedral constraints on state and control input. The overall constrained, infinite-horizon problem is split into two subprob-lems: (i) an unconstrained, infinite-horizon problem and (ii) a constrained, finite-horizon one. We derive a stationary suboptimal policy for problem (i) with analytical bounds on its optimality, and develop a formulation of problem (ii) as a Mixed-Integer Quadratic Program. By introducing the concept of a safe set, the solutions of the two subproblems are combined to achieve the overall control objective. It is shown that, by proper choice of the design parameters, the error of the overall sub-optimal solution can be made arbitrarily small. The approach is tested through a numerical example.

关键词： infinite horizon design parameter discrete-time numerical example optimality

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Design and Realization of Low Cost Discrete PSD controller for Power Electronics Applications

Design and Realization of Low Cost Discrete PSD Controller f...

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International Conference on computer engineering and Applications (ICCEA)

作者： Ondrej Krejcar Michal Tutsch Robert Frischer Ivo Spicka Department of Measurement and Control Faculty of Electrical Engineering and Computer Science VSB-Technical University of Ostrava Ostrava Czech Republic Department of Automation and Computing in Metallurgy Faculty of Metallurgy and Materials Engineering Technical University of Ostrava Ostrava Czech Republic

ISBN: (纸本)9781424460793;9780769539829

Most systems are controlling by common PID controllers. These PID controllers are available in variety possibilities. They are divided by types of controlling systems, by speed of action interference, by complexity, by robustness etc. Most of industrial controllers are very expensive and except of some basic setting they are not offering any other way, how to involve into controlling process. On the other side, developing new analog controller to control simple systems is not reasonable in financial or time issue. That's why we decided to build simple, discrete controller and implement its algorithm into single chip eight bit microcontroller (MCU). This discrete controller - PSD - is characteristic its simplicity and variability. It can control plenty of less complicated systems by a mere change of its characteristic parameters. Thanks to modern approach is possible to create a full-featured controller including power action element on an area equal to 7cm 2 .

关键词： Costs Power electronics control systems Three-term control Interference Robust control Electrical equipment industry Industrial control Process control Microcontrollers

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Implementation of a 4-DOF parallel mechanism as a needle insertion device

Implementation of a 4-DOF parallel mechanism as a needle ins...

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IEEE International Conference on Robotics and Automation (ICRA)

作者： Jaeheon Chung Hyo-Jeong Cha Byung-Ju Yi Whee Kuk Kim Department of Advanced Medical Initiatives Faculty of Medical Sciences Kyushu University Fukuoka Japan School of Electrical Engineering and Computer Science Hanyang University Ansan South Korea Department of Control and Instrumentation Engineering Korea University South Korea

ISBN: (纸本)9781424450381;9781424450404

Recently, quite a few practical parallel mechanisms having spatial 3-DOF and 6-DOF have been introduced and implemented. However, not many useful practical applications using low-mobility parallel mechanisms having 4-DOF and 5-DOF have been developed. In this paper, we propose a 4-DOF parallel mechanism for needle insertion application in which proper orientation and needle insertion process are required. The mechanism has four outer chains and one passive middle chain through which a needle insertion motion occurs. The kinematic modeling and kinematic analysis are performed to understand the characteristics of this mechanism. Through the singularity analysis, a singularity-free design for the desired workspace is proposed. Finally, the effectiveness of this device as a needle insertion device is shown through experimental work.

关键词： Needles Kinematics Medical robotics Industrial training computer science Testing Surgery Robotics and automation USA Councils Parallel robots

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Automatic test case generation in model based software design to achieve higher reliability

Automatic test case generation in model based software desig...

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International Conference on Reliability, Safety and Hazard (ICRESH)

作者： A. Wakankar A.K. Bhattacharjee S.D. Dhodapkar P.K. Pandya Kavi Arya Reactor Control Division Bhabha Atomic Research Centre Mumbai India School of Technology & Computer Science Tata Institute of Fundamental Research Mumbai India CSE IIT Bombay India Department of Computer Science & Engineering Indian Institute of Technology Mumbai India

Model based design methodology is increasingly being used in the development of software for embedded controllers for safety class applications. SCADE Suite is a set of tools that support model based design of software for embedded systems. The model validation activity in SCADE involves model simulation guided by set of test cases that are based on system requirements (Functional or blackbox) and structural coverage criteria like MC/DC (Whitebox). However, systematically devising a test case based on such criterion is not easy and often the designer is required to analyze the model to design a test sequence, which will meet the required criteria. In this paper, we demonstrate the use of a technique based on model checking to automate the generation of such test cases for SCADE models. For automatic test case generation, the tool SAL-ATG was used that can generate the test cases for the models developed in SAL specification language. MCIDC coverage criterion was adopted for generating the test goals to be covered by generated test cases.

关键词： Analytical models Manuals Educational institutions

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Decision support based on information system with fuzzy weights for menu planning

Decision support based on information system with fuzzy weig...

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作者： Kashima, Tomoko Matsumoto, Shimpei Ishii, Hiroaki Han, Hugang Graduate School of Information Science and Technology Osaka University 1-5 Yamadaoka Suita Osaka 565-0871 Japan Department of Computer and Control Engineering Oita National College of Technology 1666 Oaza-Maki Oita 870-0152 Japan Department of Management and Information Systems Prefectural University of Hiroshima 1-1-71 Ujina-higashi Minami-ku Hiroshima 734-8558 Japan

We have developed a well-balanced menu planning system to supply menu to user's taste. Mainly, the system is using fuzzy theory, mathematical programming logic and rough set theory. First, the menu set which fulfills a user's partial menu conditions out of many menu databases using fuzzy reasoning is created. Next, rough set extracts a user's taste rule. This rough set uses the information system in consideration of fuzzy weight. And a menu is proposed with mathematical programming. The proposed menu is in consideration of a user's taste and nutritive values. © 2010 ISSN.

关键词： Rough set theory

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Impulse response invariant discretization of a generalized commensurate fractional order filter

Impulse response invariant discretization of a generalized c...

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World Congress on Intelligent control and Automation (WCICA)

作者： Yan Li Hu Sheng YangQuan Chen School of Control Science and Engineering Shandong University Jinan China Department of Electronic Engineering Dalian University of Technology Dalian China Center for Self-Organizing and Intelligent Systems (CSOIS) Department of Electrical and Computer Engineering Utah State University Logan UT USA

In this paper, we derive the impulse response of a generalized commensurate fractional-order filter of the form (s 2α +as α +b) -γ , where a, b ≥ 0, α ∈ (0, 1] and γ ∈ (0, 1). The asymptotic properties of the impulse responses are obtained. Moreover, based on the derived analytical impulse response, we show how to perform the discretization of the above fractional-order filter. Finally, a number of illustrated examples in time and frequency domains are provided as proofs of concepts.

关键词： Laplace equations Fractional calculus Frequency response Equations Time frequency analysis Time domain analysis

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