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Congress on Evolutionary computation

作者： Arash Arami Bijan Rahmizadeh Rofoee Caro Lucas Control and Intelligent Processing Center of Excellence (CIPCE) school of Electrical and Computer Engineering University of Tehran Tehran Iran Electrical and Computer Engineering Department Tabriz University Tabriz Iran School of Cognitive Science Institute of Studies in Theoretical Physics and Mathematics Tehran Iran CIPCE school of Electrical and Computer Engineering University of Tehran Tehran Iran

The method of multiple heterogeneous ant colonies with information exchange (MHACIE) is presented in this paper with emphasis on the speed of finding the optimal solution and the corresponding computational complexity. The proposed method which is inspired by biology and psychology has a structure composed of several ant colonies. These colonies participate in solving problems in a concurrently manner and also exchange information with each other in communicational steps. Each ant colony is considered as an intelligent agent with behavioral traits. These behavioral traits play a key role in the solving procedure, in interrelation circumstances and in installation of relations. Faster solutions have been achieved using different employments of agents in the algorithm structure. Experimental results show the superiority of Multiple heterogeneous ant colonies algorithm in comparison to the standard ant colony system (ACS) and particle swarm optimization (PSO) algorithms on different benchmarks. A dynamic, control engineering benchmark is also provided in order to gain a more complete evaluation of the proposed algorithm.

关键词： Benchmark testing Evolution (biology) Optimization Heuristic algorithms Evolutionary computation Electronic mail Educational institutions

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Comparison of two linear models for estimating brain deformation during surgery using finite element method

Comparison of two linear models for estimating brain deforma...

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International Joint Conference on Neural Networks (IJCNN)

作者： Hajar Hamidian Hamid Soltanian-Zadeh Reza Faraji-Dana Masoumeh Gity Control and Intelligent Processing Center of Excellence (CIPCE) School of Electrical and Computer Engineering University of Tehran Tehran Iran School of Electrical and Computer Engineering University of Tehran Tehran Iran Department of Radiology University of Tehran Medical School Tehran Iran

This paper presents finite element computation of brain deformation during craniotomy. Two mechanical models are compared for this purpose: linear solid-mechanic model and linear elastic model. Both models assume finite deformation of the brain after opening the skull. We use a test sphere as a model of the brain, tetrahedral finite element mesh, and function optimization that optimizes the modelspsila parameters by minimizing the distance between the resulting deformation and the supposed deformation. Based on the final value of the objective function, we conclude that the accuracy of the solid mechanic model is higher than that of the elastic model. Applications of the methods to the MR images of the brain confirm this finding.

关键词： Brain modeling Brain models Mathematical model Optimization Equations Deformable models computational modeling

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A study of Particle Swarm Optimization on leukocyte adhesion molecules and control strategies for smart prosthetic hand

A study of Particle Swarm Optimization on leukocyte adhesion...

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IEEE Swarm Intelligence Symposium, SIS

作者： Cheng-Hung Chen Ken W. Bosworth Marco P. Schoen Shawn E. Bearden D. Subbaram Naidu Alba Perez Measurement and Control Engineering Research Center and the Department of Biological Sciences Idaho State University ID USA Measurement and Control Engineering Research Center and the Department of Computer Science Idaho State University ID USA Measurement and Control Engineering Research Center and the Department of Mechanical Engineering Idaho State University ID USA Idaho Biomedical Research Institute and the Department of Biological Sciences Idaho State University ID USA Measurement and Control Engineering Research Center and the Department of Electrical Engineering Idaho State University ID USA Measurement and Control Engineering ResearchCenter and the Department of Mechanical Engineering Idaho State University ID USA

Hard computing based optimization algorithms usually require a lot of computational resources and generally do not have the ability to arrive at the global optimum solution. Soft computing algorithms on the other hand negate these deficiencies, by allowing for reduced computational loads and the ability to find global optimal solutions, even for complex cost surfaces. This paper presents two numerical case studies where a particle swarm optimization (PSO) algorithm is applied to biomedical problems. In particular, the problem of identifying the rupture force for leukocyte adhesion molecules and the problem of finding the correct control parameters of a robotic hand, are addressed. Simulation results indicate that PSO is a feasible alternative to the computational expensive hard computing algorithms.

关键词： Particle swarm optimization White blood cells Adhesives Prosthetic hand Biomedical computing Cams Blood vessels Microorganisms Immune system Humans

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Design and Real Time Implementation of a Fuzzy Tuned H ∞ Estimator in a Low Cost AHRS

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IFAC Proceedings Volumes 2008年第2期41卷 11554-11559页

作者： Jafar Keighobadi Mansour Kabganian Mohamad J. Yazdanpanah Mechanical Engineering Department 424 Hafez Ave Amirkabir University of Technology (Tehran Polytechnic) Tehran Iran (Tel:+98-*** Control & Intelligent Processing Center of Excellence School of Electrical and Computer Engineering University of Tehran Iran (Tel: (+98-21) 82233020

In this paper a Fuzzy Tuned extended H ∞ (FTH ∞ ) estimator is designed and implemented in an Attitude Heading Reference System (AHRS), which is specialized to vehicular applications. In AHRS, 3-axis accelerometers are allotted to measure the earth's gravity field vector and then to update the roll and pitch angles obtained from gyros’ dynamic. Therefore, the AHRS on an accelerated vehicle will be affected by large disturbances. Additionally, in ground vehicles, the measurements of 3-axis magnetometers are corrupted by both soft and hard iron time varying disturbances. The FTH ∞ estimator is an extended H ∞ *** filter in which only noise and attenuation bounds are tuned based on fuzzy linguistic if-then rules. The mentioned features make the estimator more reliable and suitable for hardware implementation. FTH ∞ estimator relies on a consistent fuzzy combination of two change detection tests; namely, likelihood ratio and averaged norm error. Real-time implementation of new attitude-heading estimator is performed on a TMS320VC5416 Digital Signal Processor (DSP). Incorporating this powerful and small size DSP with micro electro mechanical inertial and resistive magnetic sensors leads to a low cost, small size and low power consumption AHRS. Performance of the AHRS was evaluated in Monte Carlo simulations of vehicle's attitude-headings. The FTH ∞ estimator results in a superior performance compared to that of the extended H ∞ estimator in simulation and real tests.

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Guaranteed Dominant Pole Placement with PID controllers

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IFAC Proceedings Volumes 2008年第2期41卷 5842-5845页

作者： Qing-Guo Wang Zhiping Zhang Karl Johan Astrom Yu Zhang Yong Zhang Department of Electrical and Computer Engineering National University of Singapore Singapore Department of Automatic Control Lund Institute of Technology Sweden Global Research Shanghai GE China Technology Center Pudong Shanghai 201203 China

Pole placement is a well-established design method for linear control systems. Note however that with an output feedback controller of low-order such as PID one cannot achieve arbitrary pole placement for a high-order or delay system, and then partially or hopefully, dominant pole placement becomes the only choice. To the best of the authors’ knowledge, no method is available in the literature to guarantee dominance of the assigned poles in the above case. This paper proposes two simple and easy methods which can guarantee the dominance of the assigned two poles for PID control systems. They are based on Root-Locus and Nyquist plot, respectively. If a solution exists, the parametrization of all the solutions is explicitly given. Examples are provided for illustration.

关键词： PID controllers Dominant Poles Pole Placement Root-Locus Nyquist Plot

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Multichannel Adaptive Stochastic Filtering for Active Noise control in Personal computers

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IFAC Proceedings Volumes 2008年第2期41卷 10154-10159页

作者： Charles E. Kinney Intae Lee Raymond de Callafon Mehrban Jam System Identification and Control Laboratory Department of Mechanical and Aerospace Engineering University of California San Diego La Jolla California 92093-0411 USA Institute for Neural Computation & Department of Electrical and Computer Engineering University of California San Diego La Jolla California 92093-0411 USA Hewlett-Packard Laboratories MMSL 1501 Page Mill Road Palo Alto CA 94304

In this paper, the feasibility of using active noise control inside personal computers is demonstrated by applying an adaptive filter to Hewlett-Packard's Blackbird 002 Gaming PC. Conditions relating the control signals and the sound heard by an external listener are presented as a means of evaluating the hardware design before applying the adaptive filter. A multichannel stochastic adaptive filter is derived by vectorizing the equations and applying gradient descent and Newton's method. For implementation purposes, data-based approximations to the gradient and hessian are provided. It is shown that a 6dB reduction in sound pressure level is obtainable by adding reference microphones, error microphones, a speaker, and some acoustical foam into the system even though the length of the noise cancelation system is small, approx. 6”, compared to the fundamental wavelength of the noise, approx 23”.

关键词： Noise control Feedforward control Multichannel Adaptive Filters Stochastic Approximation

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Achieving high-bandwidth nanopositioning in presence of plant uncertainties

Achieving high-bandwidth nanopositioning in presence of plan...

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IEEE/ASME (AIM) International Conference on Advanced Intelligent Mechatronics

作者： Sumeet S. Aphale Santosh Devasia S. O. Reza Moheimani ARC Center of Complex Dynamic Systems and Control University of Newcastle Callaghan NSW Australia Mechanical Engineering Department University of Washington Seattle WA USA School of Electrical and Computer Engineering University of Newcastle Callaghan NSW Australia

ISBN: (纸本)9781424424948

In the absence of plant parameter uncertainties, inversion-based feedforward techniques have been known to deliver accurate tracking performance. Due to changes in operating conditions like ambient temperature, humidity and loading, piezoelectric-stack actuated nanopositioning platforms can undergo significant changes in their system parameters. Nonlinear effects of hysteresis, an inherent property of a piezoelectric actuator, are also present; charge actuation is applied to reduce the effects of hysteresis. In this work, a suitable feedback controller that reduces the effects of parameter uncertainties is integrated with the inversion-based feedforward technique to deliver accurate nanopositioning over a large bandwidth. It is shown experimentally that by integrating closed-loop damping, inversion-based feedforward and charge actuation, the tracking bandwidth of the platform from can be increased significantly from 310 Hz to 1320 Hz.

关键词： Feedforward neural networks Bandwidth Resonant frequency Harmonic analysis Nanopositioning Uncertainty Damping

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engineering education societies becoming global

Engineering education societies becoming global

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2008 ASEE Annual Conference and Exposition

作者： Morell, Lueny Borri, Claudio Rajala, Sarah Ramakrishna, Seeran Quadrado, Jose Carlos Petrie, Maria M. Larrondo Fraser, Duncan Laporte, Bruno Garboan, Adriana Fouger, Xavier Hoyer, Hans Hewlett-Packard Department of Chemical Engineering University of Puerto Rico Mayagüez Puerto Rico Universita' di Firenze Department of Computational Mechanics of Structures University of Florence Italy SEFI IFEES Within Socrates II Mississippi State University Department of Electrical and Computer Engineering Mississippi State University National University of Singapore Instituto Superior de Engenharia de Lisboa Portugal ISEL Research and Project Center on Electrical Machines Control and Applications Florida Atlantic University Academic and International Affairs for the College of Engineering and Computer Science Florida Atlantic University International Federation of Engineering Education Societies Latin American and Caribbean Consortium of Engineering Institutions University of Cape Town Academic Development Faculty of Engineering and the Built Environment UCT World Bank Human Development Development Group World Bank Institute Politechnica University of Bucharest Politehnica University of Bucharest Faculty of Electronics and Telecommunications Dassault Systemes Dassault Systemes Global Learning Leads the PLM Academy American Society for Engineering Education International Programs and Strategy ASEE

Globalization is making both developed and developing countries think about effective and efficient strategies that will advance their economies and social development. Throughout the history of civilization, engineering has played a critical role in economic development. Engineers are key not only in solving local problems but also in knowledge creation and knowledge transfer. Thus, it is imperative that technical know-how be supplemented with professional skills to develop an 'adaptive leader' who is capable of addressing the multiple challenges of an ever changing world. The key-question posed by the 21st century global economy to engineering educators and stake-holders is this: "How can education in science and technology help to reduce poverty, boost socio-economic development, and take the right decisions for sustainable and environmental compatible development?" To answer these questions, a global approach is needed: and this can only be accomplished by a "team" which has its roots in all regions of the world, i.e. which is enabled to think globally and then act locally. There's a need to establish effective engineering education processes of high quality around the world to assure a global supply of well-prepared engineering graduates. This paper describes the reasons for the creation in October 2006 of IFEES - the International Federation of engineering Education Societies. It will describe the vision, mission, and key strategies of IFEES. It will also describe some of the initiatives currently underway and how the various engineering education stakeholders can leverage and benefit from engaging with IFEES, thus strengthening the organizational capacity of engineering education societies throughout the world. The paper will share plans to help members learn from each other's best practices and even failures and how those organizations that have been in existence for quite some time (ASEE was founded in the late 19th century) can contribute to the institutio

关键词： engineering education

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Autonomous decision making with uncertainty for an urban intelligence, surveillance and reconnaissance (ISR) scenario

Autonomous decision making with uncertainty for an urban int...

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作者： Holsapple, Raymond W. Chandler, Phillip R. Baker, John J. Girard, Anouck R. Pachter, Meir Air Force Research Laboratory Wright-Patterson AFB OH 45433 United States University of Michigan Ann Arbor MI 48109 United States Air Force Institute of Technology Wright-Patterson AFB OH 45433 United States Control Sciences Center of Excellence Wright-Patterson AFB OH 45433 United States Department of Aerospace Engineering Ann Arbor MI 48109 United States Department of Electrical and Computer Engineering Wright-Patterson AFB OH 45433 United States

ISBN: (纸本)9781563479458

In this paper, we consider an urban ISR scenario where a human operator is tasked to provide feedback regarding the nature of some objects of interest. The feedback is relayed to the stochastic controller of an unmanned aerial vehicle (UAV), which must determine an appropriate mission plan. A small (unmanned) aerial vehicle (SAV) loiters at a high altitude where it may survey a large territory. An operator decides which objects in the SAV's field of view are of interest and which are not. Then a team of micro (unmanned) aerial vehicles (MAVs) is assigned individual tours to inspect the objects of interest at a low altitude. As a MAV flies over an object of interest, the operator must decide if the object has a feature that uniquely distinguishes it as a target. The key parameters are the operator's response and the time taken for the operator to respond. The controller uses these parameters to compute the expected information gain of a revisit. In previous studies automatic target recognition (ATR) was used for making some decisions in the SAV and the MAVs. This paper investigates the use of human feedback alone for target recognition. Different methods for calculating expected information gain are examined and compared. In addition, results from a flight test of this controller are presented.

关键词： Feedback

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Automatic Detection of Red Blood Cells in Hematological Images Using Polar Transformation and Run-length Matrix

Automatic Detection of Red Blood Cells in Hematological Imag...

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2008 9th International Conference on Signal Processing(ICSP’2008)

作者： S.H.Rezatofighi A.Roodaki R.A.Zoroofi R.Sharifian H.Soltanian-Zadeh Control and Intelligent Processing Center of Excellence Department of Electrical and Computer EngineeringFaculty of EngineeringUniversity of TehranTehran 14395-515Iran HematologyOncology and BMT Research Center Tehran University of Medical SciencesTehranIran Control and Intelligent Processing Center of Excellence Univ.of TehranTehranIran Henry Ford Hospital DetroitMIUSA

Many of diseases related to red blood cells can be diagnosed by analyzing the hematological *** first step is to locate precisely the position of red blood *** this paper,a novel method based on polar transformation and run-length matrix is proposed for detecting red blood cells in hematological *** multilayer perceptron was employed for classifying the feature *** technique detected 3022 of the 3092 red blood cells existed in the images *** results illustrate capability of the proposed method for detecting red blood cells in hematological images.

关键词： image red Automatic Detection of Red Blood Cells in Hematological Images Using Polar Transformation and Run-length Matrix

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