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Using an efficient immune symbiotic evolution learning for compensatory neuro-fuzzy controller

IEEE Transactions on Fuzzy Systems 2009年第3期17卷 668-682页

作者： Chen, Cheng-Hung Lin, Cheng-Jian Lin, Ching-Teng Department of Electrical and Control Engineering National Chiao-Tung University Hsinchu 300 Taiwan Department of Computer Science and Information Engineering National Chin-Yi University of Technology Taichung County 411 Taiwan Department of Computer Science National Chiao-Tung University Hsinchu 300 Taiwan Brain Research Center University System of Taiwan Hsinchu 300 Taiwan

This paper presents an efficient immune symbiotic evolution learning (ISEL) algorithm for the compensatory neuro-fuzzy controller (CNFC). The proposed ISEL method includes three major components-initial population, subgroup symbiotic evolution, and immune system algorithm. First, the self-clustering algorithm that determines proper input space partitioning and finds the mean and variance of the Gaussian membership functions and number of rules is applied to the initial population. Second, the subgroup symbiotic evolution method that uses each subantibody represents a single fuzzy rule and the evolution of the rule itself. Third, the immune system algorithm uses the clonal selection principle, such that antibodies between others of high similar degree are canceled, and these antibodies, after processing, will have higher quality, accelerating the search, and increasing the global search capacity. Finally, the proposed CNFC with ISEL (CNFC-ISEL) method is adopted to solve several nonlinear control problems. The simulation results have shown that the proposed CNFC-ISEL can outperform other methods. © 2009 IEEE.

关键词： Immune system

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L2-induced Gain Analysis for a class of Switched Systems

L2-induced Gain Analysis for a class of Switched Systems

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Joint 48th IEEE Conference on Decision and control and 28th Chinese control Conference

作者： Kenji Hirata Joo P.Hespanha Department of Mechanical Engineering Nagaoka University of Technology Center for Control Dynamical Systemsand Computationand the Department of Electrical and Computer EngineeringUniversity of California

This paper addresses the computation of the L-induced gain for a class of switched *** main contribution of the paper is to completely characterize the induced gain of the switched system through a system of differential inequalities on a common storage function,one for each system being *** motivation for computing the induced gain of a switched system is the application of robust stability tools to the analysis of hybrid systems.

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Formation control of autonomous robots based on cooperative behavior 10

Formation control of autonomous robots based on cooperative ...

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2009 10th European control Conference, ECC 2009

作者： Dorfler, Florian Francis, Bruce Center for Control Dynamical Systems and Computation University of California at Santa Barbara Santa BarbaraCA93106 United States Electrical and Computer Engineering Department University of Toronto TorontoM5S3G4 Canada

ISBN: (纸本)9783952417393

This paper considers the formation control problem for autonomous robots, where the target formation is specified as a minimally rigid formation. A distributed control law based on potential functions is derived from a directed sensor graph and relies on the graph matrices only. By methods of inverse optimality a certain class of sensor graphs is identified that is related to a cooperative behavior among the robots. These graphs are referred to as cooperative graphs, and undirected graphs, directed cycles, and directed open chain graphs can be identified as such graphs. Cooperative graphs admit a local stability result of the target formation together with a guaranteed region of attraction, that depends on the rigidity properties of the formation. © 2009 EUCA.

关键词： Robots

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Designing linear phase FIR filters with particle swarm optimization and harmony search

Designing linear phase FIR filters with particle swarm optim...

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作者： Shirvani, Abdolreza Khezri, Kaveh Razzazi, Farbod Lucas, Caro Computer Engineering Department Islamic Azad University of Tehran Science Research Branch Iran Biomedical Engineering Department Islamic Azad University of Tehran Science Research Branch Iran Electrical Engineering Department Islamic Azad University of Tehran Science Research Branch Iran Electrical and Computer Engineering Department Control and Intelligent Processing Center of Excellence University of Tehran Iran

ISBN: (纸本)9783642105456

In recent years, evolutionary methods have shown great success in solving many combinatorial optimization problems such as FIR (Finite Impulse Response) filter design. An ordinary method in FIR filter design problem is Parks-McClellan, which is both difficult to implement and computationally expensive. The goal of this paper is to design a near optimal linear phase FIR filter using two recent evolutionary approaches;Particle Swarm Optimization (PSO) and Harmony Search (HS). These methods are robust, easy to implement, and they would not trap in local optima due to their stochastic behavior. In addition, they have distinguishing features such as less variance error and smaller overshoots in both stop and pass bands. To prove these benefits, two case studies are presented and obtained results are compared with previous implementations. In both cases, better and reliable results are achieved. © 2009 Springer-Verlag Berlin Heidelberg.

关键词： FIR filters

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Critical perspectives on large-scale distributed applications and production grids

Critical perspectives on large-scale distributed application...

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2009 10th IEEE/ACM International Conference on Grid Computing, Grid 2009

作者： Jha, Shantenu Katz, Daniel S. Parashar, Manish Rana, Omer Weissman, Jon Center for Computation and Technology Louisiana State University United States Department of Computer Science Louisiana State University United States e-Science Institute University of Edinburgh United Kingdom Computation Institute University of Chicago United States Department of Electrical and Computer Engineering Louisiana State University United States NSF Center for Autonomic Computing Rutgers University United States Department of Electrical and Computer Engineering Rutgers University United States Department of Computer Science Cardiff University United States Department of Computer Science University of Minnesota United States

ISBN: (纸本)9781424451494

It is generally accepted that the ability to develop large-scale distributed applications that are extensible and independent of infrastructure details has lagged seriously behind other developments in cyberinfrastructure. As the sophistication and scale of distributed infrastructure increases, the complexity of successfully developing and deploying distributed applications increases both quantitatively and in qualitatively newer ways. In this paper we trace the evolution of a representative set of "state-of-the-art" distributed applications and production infrastructure;in doing so we aim to provide insight into the evolving sophistication of distributed applications - from simple generalizations of legacy static high-performance to applications composed of multiple loosely-coupled and dynamic components. The ultimate aim of this work is to highlight that even accounting for the fact that developing applications for distributed infrastructure is a difficult undertaking, there are suspiciously few novel and interesting distributed applications that utilize production Grid infrastructure. Along the way, we aim to provide an appreciation for the fact that developing distributed applications and the theory and practise of production Grid infrastructure have often not progressed in phase. Progress in the next phase and generation of distributed applications will require stronger coupling between the design and implementation of production infrastructure and the theory of distributed applications, including but not limited to explicit support for distributed application usage modes and advances that enable distributed applications to scale-out. © 2009 IEEE.

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Planar antenna array mutual coupling identification: A direct method applied to quasi-Yagi elements

Planar antenna array mutual coupling identification: A direc...

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Progress in Electromagnetics Research Symposium 2009, PIERS 2009 Beijing

作者： Capovilla, C.E. Tavora A.s., A. Barbin, S.E. Kretly, L.C. Department of Microwaves and Optics School of Electrical and Computer Engineering University of Campinas Brazil Department of Telecommunications and Control Engineering Polytechnic School University of Sao Paulo Brazil Center for Information Technology Renato Archer Campinas Brazil

ISBN: (纸本)9781618390554

Mutual coupling between adjacent elements is a critical issue for the design of antenna arrays. In this way, it is important to know the influence that each type of coupling mechanism represents in the total mutual coupling. With this objective for a quasi-Yagi antenna array, four prototypes with special details were built and tested. Surface waves and free space coupling were analyzed aiming at proposing a better optimization procedure for the structure. Concluding, FDTD simulation results for the currents distribution on the surface of the array are presented.

关键词： Antenna arrays

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All-optical absorption switches in subwavelength metal-dielectric-metal plasmonic waveguides

All-optical absorption switches in subwavelength metal-diele...

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Frontiers in Optics, FiO 2009

作者： Min, Changjun Veronis, Georgios Center for Computation and Technology Louisiana State University Baton Rouge LA 70803 United States Department of Electrical and Computer Engineering Louisiana State University Baton Rouge LA 70803 United States

We introduce extremely compact all-optical absorption switches for subwavelength metal-dielectric-metal plasmonic waveguides. The switches consist of a cavity either directlycoupled or side-coupled to the waveguide, a... 详细信息

ISBN: (纸本)9781557528780

关键词： Plasmonics

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All-optical absorption switches in subwavelength metal-dielectricmetal plasmonic waveguides

All-optical absorption switches in subwavelength metal-diele...

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Plasmonics: Metallic Nanostructures and Their Optical Properties VII

ISBN: (纸本)9780819476845

We theoretically investigate the properties of absorption switches for metal-dielectric-metal (MDM) plasmonic waveguides. We show that a MDM waveguide directly coupled to a cavity filled with an active material with tunable absorption coefficient can act as an absorption switch, in which the on/off states correspond to the absence/presence of optical pumping. We also show that a MDM plasmonic waveguide side-coupled to a cavity filled with an active material can operate as an absorption switch, in which the on/off states correspond to the presence/absence of pumping. For a specific modulation depth, the side-coupled-cavity switch results in more compact designs compared to the directcoupled- cavity switch. Variations in the imaginary part of the refractive index of the material filling the cavity of Δκ=0.01 (Δκ=0.15) result in ~60% (~99%) modulation depth. The properties of both switches can be accurately described using transmission line theory. © 2009 SPIE.

关键词： Guided electromagnetic wave propagation

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Simple initial rotor position estimation method for three-phase star-connected switched reluctance machine

Simple initial rotor position estimation method for three-ph...

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ICCAS-SICE 2009 - ICROS-SICE International Joint Conference 2009

作者： Somsiri, Pakasit Pupadubsin, Ruchao Jitkreeyan, Prapon Kachapornkul, Seubsuang Tungpimolrut, Kanokvate Chayopitak, Nattapon Aree, Pichai Industrial Control and Automation Lab. National Electronics and Computer Technology Center Pathumthani 12120 Thailand Department of Electrical Engineering Thammasat University Pathumthani 12120 Thailand

ISBN: (纸本)9784907764296

This paper proposes a simple method to estimate the initial rotor position of a three-phase star-connected switched reluctance motor at standstill without position or current sensor. The key principle of the initial rotor position estimation is based on the stator inductance variation related to the actual rotor position. In the proposed method, only two narrow pulse voltage injections are applied in sequence and the initial rotor position can be estimated by comparing phase voltages and simple calculation. The method is suitable for low-cost applications where motor parameters and phase current data are not required. The proposed method is implemented for a 6-stator-pole, 4-rotor-pole, and 1.5 kW three-phase star-connected switched reluctance motor. The experimental results show the effectiveness of the proposed method. The accuracy of the initial rotor position estimation is within 2.5 electrical degrees, which is sufficient to start-up the switched reluctance motor without rotor back-kicking. © 2009 SICE.

关键词： Stars

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Band selection for hyperspectral images based on parallel particle swarm optimization schemes

Band selection for hyperspectral images based on parallel pa...

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2009 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2009

作者： Chang, Yang-Lang Fang, Jyh-Perng Chang, Lena Benediktsson, Jon Atli Ren, Hsuan Chen, Kun-Shan Department of Electrical Engineering National Taipei University of Technology Taipei Taiwan Department of Communications Navigation and Control Engineering National Taiwan Ocean University Keelung Taiwan Department of Electrical and Computer Engineering University of Iceland Reykjavik Iceland Center for Space and Remote Sensing Research National Central University Chung-Li Taiwan

ISBN: (纸本)9781424433957

Greedy modular eigenspaces (GME) has been developed for the band selection of hyperspectral images (HSI). GME attempts to greedily select uncorrelated feature sets from HSI. Unfortunately, GME is hard to find the optimal set by greedy operations except by exhaustive iterations. The long execution time has been the major drawback in practice. Accordingly, finding an optimal (or near-optimal) solution is very expensive. In this study we present a novel parallel mechanism, referred to as parallel particle swarm optimization (PPSO) band selection, to overcome this disadvantage. It makes use of a new particle swarm optimization scheme, a well-known method to solve the optimization problems, to develop an effective parallel feature extraction for HSI. The proposed PPSO improves the computational speed by using parallel computing techniques which include the compute unified device architecture (CUDA) of graphics processor unit (GPU), the message passing interface (MPI) and the open multi-processing (OpenMP) applications. These parallel implementations can fully utilize the significant parallelism of proposed PPSO to create a set of near-optimal GME modules on each parallel node. The experimental results demonstrated that PPSO can significantly improve the computational loads and provide a more reliable quality of solution compared to GME. The effectiveness of the proposed PPSO is evaluated by MODIS/ASTER airborne simulator (MASTER) HSI for band selection during the Pacrim II campaign. ©2009 IEEE.

关键词： Message passing

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