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American Control Conference

作者： Hadi Malek Sara Dadras YangQuan Chen Electrical and Computer Engineering Department Utah State University Logan Utah USA Mechatronics Embedded Systems and Automation (MESA) Lab MEAM/EECS School of Engineering University of California Merced Merced CA 95343 USA

ISBN: (纸本)9781479932757

The main purpose of this work is to develop a closed-loop fractional order control system for a three phase grid-connected photo-voltaic (PV) system. A two level three phase inverter with an inductive filter is chosen as a benchmark, due to the fact that this topology is more popular and simple in a grid connected PV system. A fractional order PI controller has been tuned for current control loop of the considered system and the system responses are compared with the responses of the closed loop system with integer order controller. Simulation results show the improvement in the performance of grid-connected PV system by using the fractional order controller.

关键词： THREE-PHASE fractional order current controller PI control control ring system response Closed loop systems BENCHMARKS

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A Distributed Market-based Algorithm for the Multi-robot Assignment Problem

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Procedia computer Science 2014年 32卷 1108-1114页

作者： Sahar Trigui Anis Koubaa Omar Cheikhrouhou Habib Youssef Hachemi Bennaceur Mohamed-Foued Sriti Yasir Javed University of Manouba ENSI Tunisia Cooperative Intelligent Networked Systems (COINS) Research Group Riyadh Saudi Arabia Prince Sultan University College of Computer and Information Sciences Riyadh Saudi Arabia CISTER/INESC-TEC ISEP Polytechnic Institute of Porto Porto Portugal University of Sfax Computer and Embedded Systems Lab Tunisia University of Sousse PRINCE Research Unit Tunisia Al Imam Mohammad Ibn Saud Islamic University Computer Science Department Saudi Arabia

Assigning tasks to a set of robots is a fundamental problem in robotics. It consists in finding the best task assignment to the available robots. In this paper, we present two distributed market-based algorithms to solve the assignment problem where n robots compete for n tasks with the assumption that each robot can be assigned to only one task. The first algorithm, called DMB, represents a Distributed Market-Based algorithm where each robot bids for every task. The second algorithm is an extension of the DMB. It consists in swapping tasks between robots in order to improve the efficiency of the whole assignment. We conducted both real-world experimental testing, and MATlab simulations to evaluate performance of the proposed algorithms and compare them against the centralized Hungarian algorithm in terms of traveled distance. Simulation results show that the IDMB algorithm produces near optimal solutions and in several cases it gives the optimal solution. In addition, we demonstrated the feasibility of our algorithms through real-world experimentation on robots.

关键词： Task Assignment Market-based Algorithms Multi-Robot Task Allocation ROS.

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Landmark-based self-healing service recovery for distributed pub/sub services on disaster management and M2M systems

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3rd International Conference on Disaster Management and Human Health: Reducing Risk, Improving Outcomes, DMAN 2013

作者： Shih, C.-S. Chen, H.-Y. Chen, L.-J. Embedded Systems and Wireless Networking Lab Graduate Institute of Networking and Multimedia Department of Computer Science and Information Engineering National Taiwan University Taiwan

ISBN: (纸本)9781845647384

How to exchange information between parties in a disaster management system is one of the fundamental challenges to support timely and efficient disaster response and relief. Specifically, the timeliness, scalability, and availability are three desirable features for information exchange. We call the framework to support information exchange with the three features an Open Information Gateway (OIGY). In this paper, we present the challenges of information gateway and the design of the communication protocols and landmark-based service recovery mechanism to support the aforementioned features. The mechanism aims at recovering the real-time publish and subscription services within an affected region. The developed method allows a landmark service node to monitor pub/sub service within a region, rather than the entire pub/sub network. To evaluate the performance of the service-recover mechanism, we measured its transmission and recovery overhead under different number of message brokers in the network. © 2013 WIT Press.

关键词： Middleware

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Framework and estimation of ear biometrics detection for digital forensic applications

Framework and estimation of ear biometrics detection for dig...

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Biomedical Engineering International Conference (BMEiCON)

作者： Pongyupinpanich Surapong Computer Engineering Department Realtime Information Electronic and Embedded Systems (RIEES) Lab Bangkok Thailand

Currently, forensic electronics and computers become an attractive scientific and engineering application area. They are applied to determine and identify accused or evidences used in court. However, the determination, verification and identification processes have been manually executed by experts, where they take time to come out conclusions and results. With rapidly increment of illegal cases, reducing the processing time or verifying step to identify possible suspects is significantly importance to increase efficiency. This paper first introduces a framework to identify possible suspects purpose to primary screening in forensic application. The identification of human ears in several degrees based on edge detection techniques is second considered. With the edge detection techniques corresponding to their suitable input parameters, our experimental results, with a 0.3 threshold and a 0.75 factor k, have reported that the human's ear identities can be detected and extracted.

关键词： Ear Image edge detection Forensics Biometrics (access control) Feature extraction computers Face

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Power and thermal analysis of stacked mesh 3D NoC using AdaptiveXYZ routing algorithm

Power and thermal analysis of stacked mesh 3D NoC using Adap...

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15th Euromicro Conference on Digital System Design, DSD 2012

作者： Rahmani, Amir-Mohammad Vaddina, Kameswar Rao Liljeberg, Pasi Plosila, Juha Tenhunen, Hannu Embedded Computer and Electronic Systems Lab. Department of IT University of Turku Finland Finland

ISBN: (纸本)9780769547985

Three-dimensional integrated circuits (3D ICs) offer greater device integration, reduced signal delay and reduced interconnect power. It also provides greater design flexibility by allowing heterogeneous integration. However, 3D technology exacerbates the on-chip thermal issues and increases packaging and cooling costs. In order to exploit the intrinsic capability of reducing the wire length in 3D ICs, 3D NoC-Bus Hybrid mesh architecture was proposed. This architecture provides a seemingly significant platform to implement an integrated low-cost system-wide monitoring network. In this paper, a generic monitoring and management platform called ARB-NET is presented. Based on the ARB-NET monitoring platform, a fully congestion-aware adaptive routing algorithm named AdaptiveXYZ is provided which takes advantage from viable information generated within the monitoring network. In addition, we address both the power and thermal issues of a stacked mesh 3D network on chips using AdaptiveXYZ routing. To this end, a thermal model of a 3D stacked NoC system in a modern flip-chip package is developed. Thermal and power analysis are performed in order to investigate the impact of the proposed adaptive routing from the power and thermal perspectives. Our experiments with a videoconference encoder as a real application show significant power, performance and peak temperature improvements compared to a typical stacked mesh 3D NoC. © 2012 IEEE.

关键词： Network-on-chip

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Fractional-Order Complementary Filters for Small Unmanned Aerial System Navigation

Fractional-Order Complementary Filters for Small Unmanned Ae...

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International Conference on Unmanned Aircraft systems

作者： Calvin Coopmans Austin M. Jensen YangQuan Chen Department of Electrical and Computer Engineering Utah State University Logan Utah 84321 Utah Water Research Laboratory Utah State University Logan Utah 84321 Mechatronics Embedded Systems and Automation (MESA) Lab University of California Merced Merced CA 95343

ISBN: (纸本)9781479908158

Orientation estimation is very important for development of unmanned aerial systems (UASs), and is performed by combining data from several sources and sensors. Kalman filters are widely used for this task, however they typically assume linearity and Gaussian noise statistics. While these assumptions work well for high-quality, high-cost sensors, it does not work as well for low-cost, low-quality sensors. For low-cost sensors, complementary filters can be used since no assumptions are made with regards to linearity and noise statistics. In this paper, the concepts of filtering based on fractional-order calculus are applied to the complementary filter, and the efficacy of non-integer-order filtering on systems with non-gaussian noise is explored with good success.

关键词： Fractional Order Calculus Fractional Order Filtering Unmanned Aerial Vehicles (UAV) Complementary Filters Alpha-stable non-Gaussian Combining filter Navigation Vertical Take-Off and Landing (VTOL)

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ARB-NET: A novel adaptive monitoring platform for stacked mesh 3D NoC architectures

ARB-NET: A novel adaptive monitoring platform for stacked me...

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17th Asia and South Pacific Design Automation Conference, ASP-DAC 2012

作者： Rahmani, Amir-Mohammad Latif, Khalid Rao Vaddina, Kameswar Liljeberg, Pasi Plosila, Juha Tenhunen, Hannu Embedded Computer Systems Lab. Department of Information Technology University of Turku Finland Finland

ISBN: (纸本)9781467307727

The emerging three-dimensional integrated circuits (3D ICs) offer a promising solution to mitigate the barriers of interconnect scaling in modern systems. In order to exploit the intrinsic capability of reducing the wire length in 3D ICs, 3D NoC-Bus Hybrid mesh architecture was proposed. Besides its various advantages in terms of area, power consumption, and performance, this architecture has a unique and hitherto previously unexplored way to implement an efficient system-wide monitoring network. In this paper, an integrated low-cost monitoring platform for 3D stacked mesh architectures is proposed which can be efficiently used for various system management purposes. The proposed generic monitoring platform called ARB-NET utilizes bus arbiters to exchange the monitoring information directly with each other without using the data network. As a test case, based on the proposed monitoring platform, a fully congestion-aware adaptive routing algorithm named AdaptiveXYZ is presented taking advantage from viable information generated within bus arbiters. Our extensive simulations with synthetic and real benchmarks reveal that our architecture using the AdaptiveXYZ routing can help achieving significant power and performance improvements compared to recently proposed stacked mesh 3D NoCs. © 2012 IEEE.

关键词： Three dimensional integrated circuits

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An efficient hybridization scheme for stacked mesh 3D NoC architecture

An efficient hybridization scheme for stacked mesh 3D NoC ar...

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20th Euromicro International Conference on Parallel, Distributed and Network-Based Processing, PDP 2012

作者： Rahmani, Amir-Mohammad Liljeberg, Pasi Plosila, Juha Tenhunen, Hannu Embedded Computer Systems Lab. Department of Information Technology University of Turku Finland Finland

ISBN: (纸本)9780769546339

Three-dimensional (3D) integration is a viable design paradigm to overcome the existing interconnect bottleneck in integrated systems and enhance system power/performance characteristics. In order to exploit the intrinsic capability of reducing the wire length in 3D ICs, stacked mesh 3D NoC architecture was proposed. However, this architecture suffers from naive and straightforward hybridization between NoC and bus media. In this paper, an efficient hybridization scheme is presented to enhance system performance, power consumption, and area of stacked mesh 3D NoC architectures. By utilizing a routing rule called LastZ the proposed hybridization scheme offers many advantages investigated in detail to emphasize the significant achievements. Our extensive simulations with synthetic and real benchmarks, including an integrated videoconference application show that compared to a typical 3D NoC-Bus Hybrid Mesh architecture, our hybridization scheme achieves significant power, performance, and area improvements. © 2012 IEEE.

关键词： Network-on-chip

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Partial-LastZ: An optimized hybridization technique for 3D NoC architecture enabling adaptive inter-layer communication

Partial-LastZ: An optimized hybridization technique for 3D N...

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2012 International SoC Design Conference, ISOCC 2012

作者： Rahmani, Amir-Mohammad Liljeberg, Pasi Plosila, Juha Man, Ka Lok Kim, Youngmin Tenhunen, Hannu Embedded Computer and Electronic Systems Lab. Department of IT University of Turku Finland Finland Xi'An Jiaotong-Liverpool University China ASIC LAB Myongji University Korea Republic of Baltic Institute of Advanced Technology Lithuania Korea Republic of

ISBN: (纸本)9781467329880

Three-dimensional (3D) integration offers greater device integration, reduced signal delay and reduced interconnect power. It also provides greater design flexibility by allowing heterogeneous integration. Stacked mesh 3D NoC architecture was proposed to take advantage of the intrinsic capability of reducing the wire length in 3D ICs. However, this architecture still exacerbates the on-chip power density and router cost. In this paper, we propose a novel hybridization scheme for inter-layer communication using efficient 5-input routers to enhance the overall system power, performance, and area characteristics of the existing Hybrid NoC-Bus 3D mesh architecture. By defining a rule for routing algorithms called LastZ, the proposed area-efficient architecture decreases the overall average hop count of a NoC-based system compared to the existing architectures. We further improve this design by proposing partial-LastZ-based 3D NoC-bus hybrid architecture to provide adaptivity for implementing congestion-aware and fault-tolerant inter-layer routing algorithms. Extensive quantitative experiments demonstrate up to 16% performance improvement compared to the full LastZ-based 3D NoC-bus hybrid architecture and around 20% area reduction compared to the typical hybrid NoC-Bus 3D mesh architecture. © 2012 IEEE.

关键词： Network-on-chip

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Context-awareness for service oriented systems

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International Journal of computer Science Issues 2012年第5 5-2期9卷 95-104页

作者： Hafiddi, Hatim Baidouri, Hicham Nassar, Mahmoud Kriouile, Abdelaziz Mobile and Embedded Information Systems Lab. Models and Systems Engineering Team National Higher School for Computer Science and Systems Analysis Mohammed V Souissi University BP 713 Agdal Rabat Morocco

Today, service oriented systems need to be enhanced to sense and react to user's context in order to provide a better user experience. To meet this requirement, Context-Aware Services (CAS) have emerged as an underling design and development paradigm for the development of context-aware systems. The fundamental challenges for such systems development are context-awareness management and service adaptation to the user's context. To cope with such requirements, we propose a well designed architecture, named ACAS, to support the development of Context-Aware Service Oriented systems (CASOS). This architecture relies on a set of context-awareness and CAS specifications and metamodels to enhance a core service, in service oriented systems, to be context-aware. This enhancement is fulfilled by the Aspect Adaptations Weaver (A2W) which, based on the Aspect Paradigm (AP) concepts, considers the service's adaptations as aspects. © 2012 International Journal of computer Science Issues.

关键词： Information services

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