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Power Electronic and Drive systems and Technologies Conference (PEDSTC)

作者： S. Vaez-Zadeh E. Daryabeigi Advanced Motion Systems Research Laboratory School of Electrical and Computer Engineering University of Tehran Tehran Iran Electrical Engineering Department Islamic Azad University Isfahan Iran

This paper presents a modern control system for three phase high performance interior permanent magnet motor drives. The control system combines the advantages of vector control and direct torque control and overcomes some of the implementation drawbacks of either of the methods. The system uses a current control loop in connection with a switching table. A brain emotional learning based intelligent controller (BELBIC) is employed in the system which provides excellent performance under different operating conditions. BELBIC is based on the emotion processing mechanism in human's brain providing actions based on sensory inputs and emotional cues. A comprehensive evaluation of an IPM motor performance under the proposed control system proves the effectiveness of the system and its partial superiority over either vector control or direct torque control despite its relatively simple structure.

关键词： Stators Torque Couplings Motor drives Torque control Machine vector control

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Cardiac Cine MRI using compressive sensing principles

Cardiac Cine MRI using compressive sensing principles

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17th Iranian Conference in Biomedical engineering, ICBME 2010

作者： Zamani, Pooria Kayvanrad, Mohammad H. Soltanian-Zadeh, Hamid CIPCE School of Electrical and Computer Engineering University of Tehran Tehran Iran Robarts Research Institute University of Western Ontario London ON Canada Radiology Image Analysis Lab. Henry Ford Health System Detroit MI United States

ISBN: (纸本)9781424474844

MR images can be reconstructed from undersampled k-t space data to increase image acquisition speed. We propose a new method to undersample the k-space and reconstruct images based on Compressive Sensing (CS) theory. To this end, statistical features extracted from each trajectory are clustered by the fuzzy c-means (FCM) method. The resulting class labels are considered as the states of a Markov chain. A hidden Markov model (HMM) is then trained to find the transition matrix. Trajectories having more non-diagonal transition matrices are chosen to sample data along them. An iterative thresholding algorithm is then used for reconstruction of the image. The proposed method outperforms two other methods in reconstructing half sampled Cardiac Cine MRI data. The use of fuzzy clustering as an intermediate tool to study complicated phenomena by HMM, applicability to non-dynamic MRI data, robustness to noise, faster and more accurate reconstruction describe specifications of the proposed method. © 2010 IEEE.

关键词： Compressed sensing

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Cardiac Cine MRI using Compressive Sensing principles

Cardiac Cine MRI using Compressive Sensing principles

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Iranian Conference of Biomedical engineering (ICBME)

作者： Pooria Zamani Mohammad H. Kayvanrad Hamid Soltanian-Zadeh CIPCE School of Electrical and Computer Engineering University of Tehran Tehran Iran Robarts Research Institute University of Western Ontario London ONT Canada Radiology Image Analysis Lab Henry Ford Health System Detroit MI USA

关键词： Hidden Markov models Markov processes Image coding Biomedical imaging Robustness Biological system modeling Sensors

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Autopilot-based nonlinear UAV formation controller with extremum-seeking

Autopilot-based nonlinear UAV formation controller with extr...

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44th IEEE Conference on Decision and Control, and the European Control Conference, CDC-ECC '05

作者： Feng, Xie Ximing, Zhang Fierro, Rafael Motter, Mark MARKES Lab. School of Electrical and Computer Engineering Oklahoma State University Stillwater OK 74078 United States NASA Langley Research Center Electronics System Branch Hampton VA 23681 United States

ISBN: (纸本)0780395689

In this paper, we consider the problem of designing nonlinear robust formation controllers on a team of Unmanned Aerial Vehicles (UAV) using off-the-shelf autopilots. Two nonlinear robust formation control algorithms are presented. The first controller requires knowledge of the leader's velocity and acceleration. The second controller, on the other hand, does not have such a requirement. Additionally, the desired trajectory for the follower UAV is generated by a perturbation-based extremum-seeking (ES) controller. With these algorithms, two formation flight objectives have been achieved: (i) a reduction of communication overhead, and (ii) a maximum energy saving mission flight. Numerical simulations validate the performance of the proposed control methodology. © 2005 IEEE.

关键词： Nonlinear control systems

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Optimal ramped-gate soft programming of over-erased flash EEPROM cells at given current

Optimal ramped-gate soft programming of over-erased flash EE...

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2004 7th International Conference on Solid-State and Integrated Circuits Technology Proceedings, ICSICT 2004

作者： Quan, Wu-Yun Baek, Chang-Ki Kim, Dae M. Gang, Ruan Huang, Yiping ASIC and System State-Key Research Lab. Department of Microelectronics Fudan University 220 Handan-road 200433 Shanghai China School of Electrical Engineering and Computer Science ISRC Seoul National University Kwanak P.O. Box 34 Seoul 151-744 Korea Republic of Korea Institute for Advanced Study 207-43 Cheongryangri Seoul Korea Republic of

Presented herein is an efficient simulation technique enabling systematic investigation of the soft programming over-erased flash EEPROM cells. The simulation provides a method by which to find the optimal soft programming technique for given current. The method requires only the cell performance data and allows investigation of the soft programming under various bias conditions. In principle, the methodology can also be used to investigate the programming and erase operations. © 2004 IEEE.

关键词： Flash memory

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Sensorless performance optimization of single-phase induction motors

Sensorless performance optimization of single-phase inductio...

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International Conference on Power Electronics and Drive systems (PEDS)

作者： S. Vaez-Zadeh A. Payman Advanced Motion Systems Research Lab Department of Electrical and computer Engineering University of Tehran Tehran Iran

Single-phase induction motors suffer from low torque average and high torque pulsations. These problems can be overcome by a switching capacitor in series with the stator auxiliary winding. However, the switching of the capacitor requires the motor speed signal over the entire speed range to provide performance optimization in terms of high torque average and low torque pulsations. In this paper a simple speed estimation method for single-phase induction motors is proposed in the stationary reference frame to overcome the problems associated with the use of speed sensors. Based on this method, a sensorless torque optimization system is suggested. The system is then validated by extensive simulation results. The speed estimation method was used in the sensorless control of the motors.

关键词： Induction motors Torque Capacitors Equations Stator windings Switches Optimization methods Costs Equivalent circuits Rotors

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Implementation of virtual factory using MMS companion standard 4

Implementation of virtual factory using MMS companion standa...

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4th IEEE International Workshop on Factory Communication systems, WFCS 2002

作者： Myoung, Kwan-Joo Kim, Dong-Sung Kwon, Wook Hyun Engineering Research Center for Advanced Control Instrument Control Information Systems Lab. School of Electrical Engineering and Computer Science Seoul National University Seoul151-742 Korea Republic of

ISBN: (纸本)0780375866

In this paper, a virtual factory using the manufacturing message specification (MMS) companion standard is implemented. The MMS companion standard (9506-3 ∼ 9506-7) and virtual machines are designed and implemented for robot, numerical controller (NC), programmable logic controller (PLC), and process control (PC). Finally, the MMS Internet monitoring system (MIMS) is developed for the testing system. © 2002 IEEE.

关键词： MMS companion standard On-line monitoring Virtual factory

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Cascade sliding mode control of permanent magnet synchronous motors

Cascade sliding mode control of permanent magnet synchronous...

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Annual Conference of Industrial Electronics Society

作者： S. Vaez-Zadeh S.M. Bakhtvar Advanced Motion Systems Research Lab Department of Electrical and Computer Engineering University of Tehran Tehran Iran

In this paper a cascade sliding mode control (CSMC) system is proposed for the control of high performance permanent magnet synchronous motor (PMS) drives. An improved sliding mode control strategy is introduced first based on a modified control law in order to reduce chattering. It is then used in the CSMC system to improve system robustness and performance. The performance of a PMS motor under the proposed CSMC is evaluated by both simulation and DSP implementation. The simulation and experimental results show the superiority of the CSMC over a linear control and the conventional SMC under the load disturbance and parameter variations.

关键词： Sliding mode control Permanent magnet motors Control systems Synchronous motors Magnetic variables control Torque Acceleration Digital signal processing motion control Electric variables control

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Design of a parallel-type gripper powered by pneumatic actuators

Design of a parallel-type gripper powered by pneumatic actua...

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IEEE International Workshop on Intelligent Robots and systems (IROS)

作者： B.-J. Yi H.Y. Ra J.H. Lee Y.S. Hong J.S. Park S.-R. Oh I.H. Suh W.K. Kim School of Electrical Engineering and Computer Science Hanyang University South Korea Advanced Robotics Research Center KIST South Korea Intelligent System Control Research Center KIST South Korea Department of Control and Instrumentation Engineering Korea University South Korea

A new parallel gripping mechanism is proposed in this work. This device has a parallelogramic platform which can be flexibly folded. Therefore, this mechanism not only can be used to grasp an object having irregular shape or large volume, but also can be utilized as micro-positioning device after grasping the object. Forward position analysis and platform kinematics are investigated to deal with motion tracking and force control. Pneumatic rotator is employed for actuation and a compact sized, 4/3 way proportional pressure valve is also developed to deal with feedback-based dynamic control. The pressure valve also allows indirect force control by measuring the offset pressure occurring due to contact between the grasped object and the parallel platform. In experimental work, performances of the motion tracking and indirect force control are shown satisfactory.

关键词： Grippers Pneumatic actuators Force control Tracking Valves Shape Kinematics motion analysis Pressure control Size control

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Abstracts

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Environmental Management 1977年第1期1卷 67-96页

作者： Frankenfeld, John W. Schulz, Wolfgang McMurty, George J. Petersen, Gary W. May, G. A. Hering, F. S. Schwartz, J. I. Heywood, J. B. Chigier, N. A. Grohse, E. W. Walker, J. D. Colwell, R. R. Petrakis, L. Pergament, H. S. Thorpe, R. D. Schoepf, Richard W. Krzyczkowski, Roman Henneman, Suzanne S. Hudson, Charles L. Putnam, Evelyn S. Thiesen, Donna J. Parks, G. A. McCarty, Perry L. Leckie, J. O. Schrumpf, Barry J. Simonson, G. H. Paine, D. P. Lawrence, R. D. Pyott, W. T. Leh, M. Elders, W. Combs, J. Caplen, T. Harrison, F. L. Wong, K. M. Heft., R. E. Charnell, Robert L. Lehmann, Edward J. Mallon, Lawrence G. Hatfield, Cecile Adams, Gerald H. Johanning, James Talvitie, Antti Noll, Kenneth E. Miller, Terry Smiarowski, Joseph F. Willis, Cleve E. Foster, John H. Schlesinger, Benjamin Daetz, Douglas Lear, Donald U. Smith, Mona F. Hundemann, Audrey S. Crockett, Pernell W. Werner, Kirk G. Carroll, Thomas E. Maase, David L. Genco, Joseph E. Ifeadi, Christopher N. Lowman, F. G. Christensen, S. W. Van Winkle, W. Mattice, J. S. Harrison, Elizabeth A. Barker, James C. Chesness, Jerry L. Smith, Ralph E. Shaheeen, Donald G. Raney, R. Keith Borton, T. Wezernak, C. T. Raney, R. K. Sherwani, Jabbor K. Moreau, David H. Eisenberg, Norman A. Lynch, Cornelius J. Breeding, Roger J. Johnson, J. D. Foster, K. E. Mouat, D. A. Clark, R. Hyden, John William Owen, Wilfred Bayfield, Neil G. Barrow, Graham C. Stolz, Stephanie B. Wienckowski, Louis A. Brown, Betram S. Keyfitz, Nathan Wilson, W. L. Newman, Peter W. G. Bammi, Deepak Bammi, Dalip Goddard, James E. Chisholm, Tony Walsh, Cliff Brennan, Geoffrey Thompson, K. S. Richardson, R. Jensen, Clayton E. Brown, Dail W. Mirabito, John A. Cowing, Thomas G. Binghamton, Suny Siehl, George H. Albrecht, O. W. Alexander, Ariel Barde, Jean -Philippe Darby, William P. McMichael, Francis Clay Dunlap, Robert W. Muckleston, Keith W. Frankenhoff, Charles A. Giulini, Lorenzo T. Wyatt, T. Black, Peter E. Keating, William Thomas Leonard, M. E. Fisher, E. L. Brunelle, M. F. Dickinson, J. E. Pethig, Rudiger Clapham Exxon Research & Engineering Co. Linden Government Research Lab Coast Guard Washington D.C. Department of Transportation Washington D.C. Office For Remote Sensing of Earth Resources. NASA Earth Resources Survey Program Pennsylvania State University Washington D.C. Department of the Navy Washington D.C. Cambridge. Dept. of Mechanical Engineering Massachusetts Inst. of Technology USA Huntsville. School of Graduate Studies and Research Alabama Univ. USA Dept. of Microbiology. Office of Naval Research Maryland Univ. Arlington Research and Development Co. Pittsburgh AeroChem Research Labs. Inc. Princeton Dept. of the Interior Office of Library Services. Bibliographic Series (Final) Washington D.C. Interplan Corp. Santa Barbara Urban Mass Transportation Adm. Washington D.C. Naval Underwater Systems Center Newport Calif. Mercury Project. National Science Found Stanford Univ Washington D.C. Div. of Advanced Environmental Research & Tech. USA Corvallis. NASA Earth Resources Survey Program Oregon State Univ. Washington D.C. Riverside. Inst. of Geophysics and Planetary Physics National Science Foundation California Univ. Washington D.C. Livermore Lawrence Livermore Lab. California Univ. USA Atlantic Oceanographic and Meteorological Labs. National Oceanic and Atmospheric Administration Miami National Technical Information Service Springfield Miami Univ. Coral Gables School of Law National Oceanic and Atmospheric Administration Rockville National Academy of Sciences Office of Sea Grant Washington D. C. School of Law National Oceanic and Atmospheric Administration Office of Sea Grant. Rockville Norman. Dept. of Civil Engineering and Environmental Science. Urban Mass Transportation Administration Oklahoma Univ. Washington D. C. Knoxville.Dept. of Civil Engineering. Federal Highway Administration Tennessee Univ. Washington D. C. Amherst.Water Resources Research Center. Office of Water Research and Technology Massachusetts Univ. Washington D. C. Calif. Dept. of Industria

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