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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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Reduction of Player's Weight by Active Playing Using Motion Sensors

Reduction of Player's Weight by Active Playing Using Motion ...

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The 2011 International Conference on Electric and Electronics(EEIC 2011)

作者： Ondrej Krejcar Dalibor Janckulik University of Hradec Kralove FIM Department of Information Technologies VSB Technical University of Ostrava Center for Applied Cybernetics Department of Measurement and Control Faculty of Electrical Engineering and Computer Science

This project was inspired by the idea of the connection of amusement and useful thing respectively the movement by the playing games, because as is known global problem of the Word is increasing obesity caused by the addiction on the PC games at the young people. This project connects pleasurable with useful, respectively playing of the game with physical effort. By the help of the accelerometer is possible to handle by simple games to whose operating is needed physical impulsion of the player. After it would be possible to take up on this project by the beat measurement of the player in order to check on effectivity of the suggested system. Software was programmed in background C#.

关键词： accelerometer weight reducing mobile device C#

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Invasive blood pressure curves simulation device

Invasive blood pressure curves simulation device

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Middle East Conference on Biomedical engineering (MECBME)

作者： Jan Kijonka Marek Penhaker Jindrich Cernohorsky Faculty of Electrical Engineering Department of Measurement and Control VSB-Technical University of Ostrava Ostrava Czech Republic Faculty of Electrical Engineering and Computer Science Department of Measurement and Control Centre for Applied Cybernetics VSB-Technical University of Ostrava Ostrava Czech Republic

Patient monitor modules have various inputs for vital function measurement. We can practice many of these measurements with some students in the laboratory of biomedical engineering. However, invasive blood pressure (IBP) measurement demonstration is impossible. This paper is dealing with design and realization of a programmable invasive blood pressure simulator. This device is able to generate programmable behavior of voltage signal with correspond to blood pressure curve. The user communication interface of the device allows choosing the type of generated signal by LCD and 4 push buttons. The wide spectrums of generated signals, which correspond to physiological or pathological blood pressure curves, are stored in a user programmable memory. The output connectors of the device can be directly connected to a patient monitor IBP module input. Invasive blood pressure measurement simulation for educational purposes and calibrating the patients monitors are the general usages of the developed device.

关键词： Biomedical monitoring Blood pressure Monitoring Bridge circuits Pressure measurement Temperature measurement

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Exploiting motion priors in visual odometry for vehicle-mounted cameras with non-holonomic constraints

Exploiting motion priors in visual odometry for vehicle-moun...

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2011 IEEE/RSJ International Conference on Intelligent Robots and Systems

作者： Davide Scaramuzza Andrea Censi Kostas Daniilidis GRASP laboratory Department of Computer and Information Science School of Engineering and Applied Science University of Pennsylvania Philadelphia USA GRASP laboratory University of Pennsylvania USA Control and Dynamical Systems Department Division of Engineering and Applied Sciences California Institute of Technology Pasadena USA

This paper presents a new method to estimate the relative motion of a vehicle from images of a single camera. The biggest problem in visual motion estimation is data association; matched points contain many outliers that must be detected and removed so that the motion can be estimated accurately. A very established method for robust motion estimation in the presence of outliers is the five-point RANSAC algorithm. Five-point RANSAC operates by generating motion hypotheses from randomly-sampled minimal sets of five-point correspondences. These hypotheses are then tested against all data points and the motion hypothesis that after a given number of iterations returns the largest number of inliers is taken as the solution to the problem. A typical drawback of RANSAC is that the number of iterations required to find a suitable solution grows exponentially with the number of outliers, often requiring thousands of iterations for typical data from urban environments. Another problem is that - due to its random nature - sometimes the found solution is not the “best” solution to the motion estimation problem. In this paper, we describe an algorithm for relative motion estimation in the presence of outliers, which does not rely on RANSAC. Contrary to RANSAC, motion hypotheses are not generated from randomly-sampled point correspondences, but from a “proposal distribution” that is built by exploiting the vehicle non-holonomic constraints. We show that not only is the proposed algorithm significantly faster than RANSAC, but that the returned solution may also be better in that it favors the underlying motion model of the vehicle, thus overcoming the typical limitations of RANSAC. Additionally, the proposed algorithm provides the likelihood of the motion estimate, which can be very useful in all those applications where a probability distribution of the position of the vehicle is required (e.g., SLAM). Finally, the performance of the proposed method is compared to that of the sta

关键词： Vehicles Cameras Proposals Motion estimation Wheels Urban areas Three dimensional displays

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High-order sliding-mode control for blood glucose regulation in the presence of uncertain dynamics

High-order sliding-mode control for blood glucose regulation...

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33rd Annual International Conference of the IEEE engineering in Medicine and Biology Society, EMBS 2011

作者： Hernández, Ana Gabriela Gallardo Fridman, Leonid Leder, Ron Andrade, Sergio Islas Monsalve, Cristina Revilla Shtessel, Yuri Levant, Arie Department of Control Engineering Faculty C.P. 04510 México D.F. Mexico Metabolic Diseases Research Unit CMN SXXI Av. Cuauhtémoc 330 Col. Doctores C.P. 06725 México D.F. Mexico Department of Electrical and Computer Engineering University of Alabama in Huntsville Huntsville AL 35899 United States Applied Mathematics Department Tel-Aviv University Israel

ISBN: (纸本)9781424441211

The success of blood glucose automatic regulation depends on the robustness of the control algorithm used. It is a difficult task to perform due to the complexity of the glucose-insulin regulation system. The variety of model existing reflects the great amount of phenomena involved in the process, and the inter-patient variability of the parameters represent another challenge. In this research a High-Order Sliding-Mode control is proposed. It is applied to two well known models, Bergman Minimal Model, and Sorensen Model, to test its robustness with respect to uncertain dynamics, and patients' parameter variability. The controller designed based on the simulations is tested with the specific Bergman Minimal Model of a diabetic patient whose parameters were identified from an in vivo assay. To minimize the insulin infusion rate, and avoid the hypoglycemia risk, the glucose target is a dynamical profile. © 2011 IEEE.

关键词： Glucose

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High-Order Sliding-Mode control for Blood Glucose Regulation in the Presence of Uncertain Dynamics

High-Order Sliding-Mode Control for Blood Glucose Regulation...

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Annual International Conference of the IEEE engineering in Medicine and Biology Society

作者： Ana Gabriela Gallardo Hernandez Leonid Fridman Ron Leder Sergio Islas Andrade Cristina Revilla Monsalve Yuri Shtessel Arie Levant Universidad Nacional Autonoma de Mexico (UNAM) Department of Control Engineering Faculty Metabolic Diseases Research Unit CMN SXXI Department of Electrical and Computer Engineering University of Alabama in Huntsville Applied Mathematics Department in Tel-Aviv University

ISBN: (纸本)9781424441211

关键词： computer algorithms Blood Glucose Variable structure systems Plant uncertain diabetic patient higher-order infusion rate Hypoglycemia Regulation (biology) Standing Orders automatic regulation

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Observer Based Delay-Dependent Robust H∞ control of Nonlinear Uncertain Systems with State and Input Delays

Observer Based Delay-Dependent Robust H∞ Control of Nonline...

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2011 China control and Decision Conference(2011中国控制与决策会议 CCDC)

作者： Miaoxin Wang Xinzhi Liu Jizhen Liu Miaomiao Ma School of Control and Computer Engineering North China Electric Power University Beijing 102206Ch Department of Applied Mathematics University of Waterloo Waterloo Ontario Canada N2L3G1 School of Control and Computer Engineering North China Electric Power University Beijing 102206 C School of Control and Computer Engineering North China Electric Power University Beijing 102206

Observer-based delay-dependent robust H∞ controller design problem for state and input time-delays systems with a class of nonlinear uncertainties is discussed in this paper. Assuming that the nonlinear uncertain functions in the considered model are gain-bounded, we obtain a sufficient condition for robustly asymptotic stability and H∞ performance of the closed-loop system in the light of Lyapunov stability theory. By solving a pair of linear matrix inequalities (LMIs), we construct delay-dependent state feedback control law which guarantees robustly asymptotic stability of the closed-loop system and reduce the effect of the disturbance input on the controlled output to a prescribed level. The delay-bounds and the H performance bound can be optimized. A numerical example is given to illustrate our results.

关键词： Nonlinear uncertain systems State and input delays Delay-dependent Robust H control Observer LMI

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Size and composition dependence of melting temperature of binary nanoparticles

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Science China(Physics,Mechanics & Astronomy) 2011年第5期54卷 897-900页

作者： LU YunBin LIAO ShuZhi XIE Bin CHEN Jia PENG HaoJun ZHANG Chun ZHOU HuiYing XIE HaoWen OUYANG YiFang ZHANG BangWei Key Laboratory of Low Dimensional Quantum Structures and Quantum Control of Ministry of Education Department oy rnystcs Hunan Normal University Changsha 410081 China College of Mathematics and Physics University of South China Hengyang 421001 China College of Mathematics and Computer Science Hunan Normal University Changsha 410081 China Computer and Information Engineering School Central South University of Forestry and Technology Changsha 410004 China Department of Physics Guangxi University Nanning 530004 China Department of Applied Physics Hunan University Changsha 410082 China International Centre for Materials Physics Chinese Academy of Sciences Shenyang 110015 China

Based on the ideal solution approximation, the model for size-dependent melting temperature of pure metal nanoparticles is extended to binary alloy systems. The developed model, free of any adjustable parameter, demonstrates that the melting temperature is related to the size and composition of alloy nanoparticles. The melting temperature of CuNi, PbBi and Snln binary alloy nanocrystals is found to be consistent with the experiments and molecular dynamics simulations. The research reveals that alloy nanocrystals have similar melting nature as pure metal.

关键词： nano binary alloy melting temperature size-dependent

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Fast polynomial reconstruction attack against fuzzy fingerprint vault

Fast polynomial reconstruction attack against fuzzy fingerpr...

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5th International Conference on New Trends in Information Science and Service Science, NISS 2011

作者： Choi, Woo Yong Pan, Sung Bum Kim, Joo-Man Chung, Yongwha Hong, Dowon Software Research Laboratory ETRI 161 Gajeong-dong Yuseong-gu Daejeon 305-700 Korea Republic of Department of Control Instrumentation and Robot Engineering Chosun University 375 Seosuk-dong Dong-gu Gwangju 501-759 Korea Republic of Department of Applied IT and Engineering Pusan National University 50 Chunghak-ri Samrangjin-eup Miryang Kyungnam Korea Republic of Department of Computer and Information Science Korea University Jochiwon-eup Yeongi-gun Chungnam 339-700 Korea Republic of

ISBN: (纸本)9788988678626

Fuzzy fingerprint vault is proposed to provide a solution to user privacy and fingerprint template security problems. It binds fingerprint minutiae with a private key and scrambling it with a large amount of chaff minutiae. The security of the fuzzy fingerprint vault is based on the computational infeasibility of selection of a fixed number of the fingerprint minutiae. If the fingerprint minutiae can be selected much more efficiently, however, the fuzzy fingerprint vault scheme becomes vulnerable. In this paper we propose a new attack algorithm which applies the fast polynomial reconstruction algorithm. Experimental results show that the proposed algorithm is superior to both the correlation attack and the brute-force attack. The proposed attack algorithm records 100% attack rate on FVC2002 database. © 2011 AICIT.

关键词： computers

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Frequency Domain Time-Space Decomposition for Efficient Near Field Pressure Computations

Frequency Domain Time-Space Decomposition for Efficient Near...

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2011 IEEE Ultrasonics Symposium (IUS 2011)

作者： E.J. Alles K.W.A. van Dongen R.J. McGough Biomedical Ultrasound Engineering Laboratory Department of Electrical and Computer and Engineering Michigan State University East Lansing MI 48824-1226 Laboratory of Acoustical Imaging and Sound Control Faculty of Applied Sciences Delft University of Technology Delft the Netherlands

ISBN: (纸本)9781457712531

Time-Space Decomposition is one of the most efficient transient near-field pressure simulation schemes available for piston transducers, but suffers from two drawbacks. Every signal has to be individually programmed, and not all signals can be rewritten into the desired decomposition. In this work, an extension of the above method is presented in which the excitation signal is first transformed into the frequency domain and each of the frequency components is used as separate excitation signal. Spectral clipping is applied to reduce the number of terms and hence the computation time. By removing energy from the problem, the efficiency increases at the cost of accuracy. The achieved accuracy in the transient pressure field is known a priori and thus can be set prior to the actual simulation. Pressure fields obtained with the proposed method are compared to those obtained with Field II and with reference solutions obtained with an impulse response method. The proposed method reaches relative errors in the transient pressure field as low as 10~(-6) and is significantly more accurate than Field II which has difficulties reaching errors below 10~(-3). The time to reach an error of 10~(-2) using the proposed method is more than 100 × shorter than the time required by Field II to reach that same error.

关键词： Acoustics

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