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9th IEEE International Conference on control and Automation, ICCA 2011

作者： Nõmm, Sven Vassiljeva, Kristina Belikov, Juri Petlenkov, Eduard Control Systems Department Institute of Cybernetics Tallinn University of Technology Akadeemia tee 21 12618 Tallinn Estonia Department of Computer Control Tallinn University of Technology Ehitajate tee 5 19086 Tallinn Estonia

ISBN: (纸本)9781457714757

Application of genetic algorithm to determine structure of Neural Networks based Additive Nonlinear eXogenous (NN-ANARX) model and if possible to simplify the architecture of corresponding neural network constitutes subject of present paper. In this paper, we construct a specific fitness function, which depends on mean square error, certain cross correlation coefficients and an order of the model. © 2011 IEEE.

关键词： Genetic algorithms

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FPGA-based energy spectrum measurement system design

FPGA-based energy spectrum measurement system design

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2011 International Conference on Mechatronic Science, Electric Engineering and computer, MEC 2011

作者： Li, Hongguo Cao, Hongyu Zheng, Baohua College of Computer Science and Technology Beihua University Jilin 132013 China College of Information and Control Engineering Jilin Institute of Chemical Technology Jilin 132022 China

ISBN: (纸本)9781612847221

This article proposes FPGA-based method of data acquisition and processing of the energy spectrum which reduces the dead time, improving the pulse through rate effectively without dealing with pulse shaping. The measurement of -ray energy spectrum of 137Cs proves that the method is effective. At the same time, the advantages of FPGA in high speed data processing are reflected. © 2011 IEEE.

关键词： Field programmable gate arrays (FPGA)

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Stabilization of linear systems with distributed delay and saturation nonlinearity

Stabilization of linear systems with distributed delay and s...

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作者： Zhou, Bin Gao, Huijun Lin, Zongli Duan, Guang-Ren Center for Control Theory and Guidance Technology Harbin Institute of Technology China Space Control and Inertial Technology Research Center Harbin Institute of Technology China Charles L. Brown Department of Electrical and Computer Engineering University of Virginia United States

ISBN: (纸本)9789881725592

This paper is concerned with stabilization of a linear system with distributed input delay and input saturation. Both constant and time-varying delays are considered. In the case that the input delay is constant, under the stabilizability assumption on an auxiliary system, it is shown that the system can be stabilized by state feedback for an arbitrarily large delay as long as the open-loop system is not exponentially unstable. In the case that the input delay is time-varying, but bounded, it is shown that the system can be stabilized by state feedback if the non-asymptotically stable poles of the open-loop system are all located at the origin. In both cases, stabilizing controllers are explicitly constructed by utilizing the parametric Lyapunov equation based low gain design approach we recently developed. It is also shown that in the presence of actuator saturation and under the same assumptions on the system, these controllers achieve semi-global stabilization. Some discussions on the assumptions we impose on the system are given. A numerical example illustrate the effectiveness of the proposed stabilization approach. © 2011 Chinese Assoc of Automati.

关键词： Stabilization

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Neighborhood discriminant nearest feature line analysis for face recognition

Neighborhood discriminant nearest feature line analysis for ...

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2011 2nd International Conference on Innovations in Bio-inspired Computing and Applications, IBICA 2011

作者： Yan, Lijun Pan, Jeng-Shyang Chu, Shu-Chuan Roddick, John F. Department of Automatic Test and Control Harbin Institute of Technology Harbin China Department of Computer Science Harbin Institute of Technology Shenzhen Graduate School Shenzhen China School of Computer Science Engineering and Mathematics Flinders University of South Australia Australia

ISBN: (纸本)9781457712197

A novel subspace learning algorithm named neighborhood discriminant nearest feature line analysis (NDNFLA) is proposed in this paper. NDNFLA aims to find the discriminant feature of samples by maximizing the between-class feature line (FL) distances and minimizing the within-class FL distance. At the same time, theneighborhood is preserved in the feature space. Experimental results demonstrate the efficiency of the proposed algorithm. © 2011 IEEE.

关键词： Face recognition

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Toward a 2D Modular and Self-Reconfigurable Robot for Conveying Microparts

Toward a 2D Modular and Self-Reconfigurable Robot for Convey...

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Workshop on Design, control and Software Implementation for Distributed MEMS (dMEMS)

作者： Sebastian Mobes Guillaume J. Laurent Cedric Clevy Nadine Le Fort-Piat Benoit Piranda Julien Bourgeois Ilmenau University of Technology Ilmenau Germany Automatic Control and Micro-Mechatronic Université de Franche-Comté ENSMM CNRS Besançon France Université de Franche-Comté Laboratoire LASELDI équipe Outils et Usage Numériques (OUN) Montbéliard France Computer Science Department FEMTO-ST Institute CNRS Universita de Franche-Comté Montbeliard France

This paper describes the design, prototyping and control of a 2D modular and self-reconfigurable robot for conveying microparts. The elementary block is designed to have a package dimension under 1 cm 3 and will include the actuators, the electronics and the micro-controller. Electropermanent (EP) magnets are used for both the linkage and the traveling system to avoid any power consumption during the linkage. Some prototype blocks have been realized and show a well working of the motion and a sufficient holding force. The paper presents also an algorithm, common to all blocks units, allowing to reconfigure a set blocks from a spatial configuration to another one. This algorithm is implemented in a simulator software showing in real-time the reconfiguration of the robot.

关键词： Magnetic separation Magnetic cores Force Bridge circuits Capacitors Software algorithms Magnetic resonance imaging

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(n+r)D systems and their control with reduced sensitivity to parametric uncertainties

(n+r)D systems and their control with reduced sensitivity to...

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2011 7th International Workshop on Multidimensional (nD) Systems, nDS 2011

作者： Rafajlowicz, Ewaryst Rafajlowicz, Wojciech Institute of Computer Eng. Control and Robotics Wroclaw University of Technology Wyb. WYspianskiego 27 50 370 Wroclaw Poland

ISBN: (纸本)9781612848167

Our aim is to propose an extension of nD systems by treating uncertain parameters of a system as additional independent variables. We recall known results on deriving equations for the sensitivity of the system state to parameter changes. Then, the problem of optimal control of linear systems extended by sensitivity equations with the quadratic criterion is stated. Its solution is relatively easy using the well known results for LQ optimal systems, but in our case the optimal controller is fed additionally by sensitivity signals. A numerical example indicates that the behavior of control system with reduced sensitivity is different than the behavior of classical systems, which is the price that we pay for parameter uncertainty. © 2011 IEEE.

关键词： Linear systems

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Links between technology-based education and engineering education research - Electric circuit theory case study

Links between technology-based education and engineering edu...

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14th IASTED International Conference on computers and Advanced technology in Education, CATE 2011

作者： Rutkowski, Jerzy Moscinska, Katarzyna Institute of Electronics Faculty of Automatic Control Electronics and Computer Science Silesian University of Technology Akademicka 16 44-100 Gliwice Poland

ISBN: (纸本)9780889868885

The paper underlines strong links between Engineering Education Research and ICT-Based Education Relationships between ICT-supported components of abasic engineering course, for both Learning Content and Assessment Program, at the background of two fundamental theories for effective teaching-learning: Bloom's Taxonomy of learning objectives and Dale's Cone of learning experiences, are discussed. A course redevelopment, from the traditional model to ICTsupported model is presented on the Electric Circuit Theory case study. Based on the lessons learned, some guidelines are given. No categorical recommendations for best practices are offered, however, the following general conclusion is drawn: if teachers wish to live in a digital world in which today's students live, then an immediate attention to the conduct of teaching has to be given, such that both students' and teachers' expectations are met, i.e. high standards in quality of education are maintained or even improved and "learning is fun" attitude dominate "learning is boring" attitude of students.

关键词： Students

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Orientation of doubly nonholonomic mobile manipulator in the path tracking problem

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7th International Conference on Informatics in control, Automation and Robotics, ICINCO 2010

作者： Mazur, Alicja Institute of Computer Engineering Control and Robotics Wroclaw University of Technology ul. Janiszewskiego 11/17 Wroclaw 50-372 Poland

ISBN: (纸本)9783642195389

In the paper we want to present a problem of path following for nonholonomic mobile manipulators. In our consideration we restrict ourself to doubly nonholonomic mobile manipulators. Nonholonomic constraints appear due to motion of the robotic system without slipping effect between wheels and the surface (for nonholonomic platform) or between special supporting wheels and ball in an onboard manipulator equipped with nonholonomic gears. As a point of departure for mathematical formulation of this problem we will use so-called Frenet parametrization. It establishes some tool to find some control laws solving the formulated problem. A role of orientation in the path tracking will depend on the user-choice and number of control inputs. © 2011 Springer-Verlag Berlin Heidelberg.

关键词： Wheels

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The implementation of semaphore management in hardware real time operating system

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Information technology Journal 2011年第1期10卷 158-163页

作者： Li, Yan Gu, Ping-Ping Wang, Xian-Shan Computer and Control Institute Harbin University of Science and Technology China

Currently, the study about hardware RTOS (Real Time Operating System) focus on implementation of the single module of RTOS by hardware, the overall hardware RTOS design and realization is seldom at home and abroad. So the hardware and software partitioning and implementing a hardware IP core of RTOS is worth further study. In this study, hardware-software partitioning of the hardware RTOS and the semaphore management are designed and implemented. The semaphore management is a program segment which runs frequently in operating system, the design solution that realize the semaphore management based on FPGA is put forward, in order to enhance the response capability of the RTOS. The storage structure, ECB (event control block) and mapping table are realized by on-chip registers;the semaphore management is realized by combinational logic circuit;both of them bring high speed to execute the semaphore system call function and P/V operations. The entire design is described by VHDL, simulated by the ISE 8.2 and realized on Xilinx's Virtex-II Pro Field Programmable Gate Array (FPGA) board. The result shows that realizing the semaphore management by hardware achieves good results in speeding up the RTOS. © 2011 Asian Network for Scientific Information.

关键词： Field programmable gate arrays (FPGA)

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Analyses of impedance matching for piezoelectric energy harvester with a resistive circuit

Analyses of impedance matching for piezoelectric energy harv...

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2011 International Conference on Electronic and Mechanical Engineering and Information technology, EMEIT 2011

作者： Wang, Hongyan Shan, Xiaobiao Xie, Tao Fang, Muwen State Key of Advanced Robot and System Harbin Institute of Technology Harbin China College of Computer and Control Engineering Qiqihar University Qiqihar China

ISBN: (纸本)9781612840857

To investigate resistance matching and the power optimality performance of the piezoelectric energy harvester connected to a resistance circuit, an analytical solution for the bimorph piezoelectric energy harvester based on the piezoelectric constitutive equations and the fundamental mechanics of materials relations is done to estimate the maximum achievable power and the optimal resistance. A finite element model for system-level simulation is constructed to analyze the effect of the various load resistance on output power around the resonance frequency. Furthermore, the internal impedance of the energy harvester is obtained from a harmonic alternating voltage input using the finite element method (FEM). The simulation results were found to be in agreement with numerical calculation results. The results indicate that the output power depends on the internal impendence of the piezoelectric energy harvester, and the impedance matching can be used to extract maximum output power. © 2011 IEEE.

关键词： Energy harvesting

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