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Asia Symposium on Quality Electronic design, ASQED

作者： M. Barke M. Kärgel W. Lu F. Salfelder L. Hedrich M. Olbrich M. Radetzki U. Schlichtmann Institute for Electronic Design Automation Technische Universität München Germany Institute of Microelectronic Systems Leibniz Universität Hannover Germany Embedded Systems Engineering University of Stuttgart Germany Department of Computer Science J. W. GoeUniversity FB Informatik VSFT Germany

Robust system design is becoming increasingly important, because of the ongoing miniaturization of integrated circuits, the increasing effects of aging mechanisms, and the effects of parasitic elements, both intrinsic and external. For safety reasons, particular emphasis is placed on robust system design in the automotive and aerospace sectors. Until now, the term robustness has been applied very intuitively and there has been no proper way to actually measure robustness. However, the complexity of contemporary systems makes it difficult to fulfill tight specifications. For this reason, robustness must be integrated into a partially automated design flow. In this paper, a new approach to robustness modeling is presented, in addition to new ways to quantify or assess the robustness of a design. To demonstrate the flexibility of the proposed approach, it is adapted and applied to several different scenarios. These include the robustness evaluation of digital circuits under aging effects, such as NBTI; the robustness modeling of analog and mixed signal circuits using affine arithmetic; and the robustness study of software algorithms on a high system level.

关键词： Robustness Human computer interaction Testing

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Temporal properties of error handling for multimedia applications

Temporal properties of error handling for multimedia applica...

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作者： Engel, Michael Heinig, Andreas Schmoll, Florian Marwedel, Peter TU Dortmund Faculty of Computer Science Design Automation of Embedded Systems Germany

ISBN: (纸本)9783000348648

In embedded consumer electronics devices, cost pressure is one of the driving design objectives. Devices that handle multimedia information, like DVD players or digital video cameras require high computing performance and realtime capabilities while adhering to the cost restrictions. The cost pressure often results in system designs that barely exceed the minimum requirements for such a system. Thus, hardware-based fault tolerance methods frequently are ignored due to their cost overhead. However, the amount of transient faults showing up in semiconductor-based systems is expected to increase sharply in the near future. Thus, low-overhead methods to correct related errors in such systems are required. Considering restrictions in processing speed, the real-time properties of a system with added error handling are of special interest. In this paper, we present our approach to flexible error handling and discuss the challenges as well as the inherent timing dependencies to deploy it in a typical soft realtime multimedia system, a H.264 video decoder. © 2011 Informatik Centrum.

关键词： Costs

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Temporal properties of error handling for multimedia applications

Temporal properties of error handling for multimedia applica...

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ITG Conference on Electronic Media Technology (CEMT)

作者： Michael Engel Andreas Heinig Florian Schmoll Peter Marwedel Faculty of Computer Science Design Automation of Embedded Systems Technical University Dortmund Germany

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Application of mismatched cellular nonlinear networks for physical cryptography

Application of mismatched cellular nonlinear networks for ph...

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2010 12th International Workshop on Cellular Nanoscale Networks and their Applications, CNNA 2010

作者： Csaba, György Ju, Xueming Ma, Zhiqian Chen, Qingqing Porod, Wolfgang Schmidhuber, Jürgen Schlichtmann, Ulf Lugli, Paolo Rührmair, Ulrich Institute for Nanoelectronics Technical University of Munich Munich Germany Institute for Electronic Design Automation Technical University of Munich Germany Center for Nano Science and Technology University of Notre Dame Notre Dame United States Cognitive Robotics Lab Technical University of Munich Germany Institute for Robotics and Embedded Systems Technical University of Munich Germany

ISBN: (纸本)9781424466795

This paper proposes the use of Cellular Non-Linear Networks (CNNs) as physical uncloneable functions (PUFs). We argue that analog circuits offer higher security than existing digital PUFs and that the CNN paradigm allows us to build large, unclonable, and scalable analog PUFs, which still show a stable and repeatable input-output behavior. CNNs are dynamical arrays of locally-interconected cells, with a cell dynamics that depends upon the interconnection strengths to their neighbors. They can be designed to evolve in time according to partial differential equations. If this equation describes a physical phenomenon, then the CNN can simulate a complex physical system on-chip. This can be exploited to create electrical PUFs with high relevant structural information content. To illustrate our paradigm at work, we design a circuit that directly emulates nonlinear wave propagation phenomena in a random media. It effectively translates the complexity of optical PUFs into electrical circuits. © 2010 IEEE.

关键词： Cryptography

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Mapping embedded Applications on MPSoCs: The MNEMEE Approach

Mapping Embedded Applications on MPSoCs: The MNEMEE Approach

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IEEE computer Society Annual Symposium on VLSI

作者： Christos Baloukas Lazaros Papadopoulos Dimitrios Soudris Sander Stuijk Olivera Jovanovic Florian Schmoll Daniel Cordes Robert Pyka Arindam Mallik Stylianos Mamagkakis François Capman Séverin Collet Nikolaos Mitas Dimitrios Kritharidis Institute of Communications and Computer Systems Athens Greece Eindhovan University of Technology Eindhoven Netherlands Design Automation of Embedded Systems Group Dortmund Germany Informatik Centrum Dortmund e. V Dortmund Germany IMEC vzw Leuven Belgium Thales Communications Colombes France Intracom Telecom Athens Greece

ISBN: (纸本)9781424473212

As embedded systems are becoming the center of our digital life, system design becomes progressively harder. The integration of multiple features on devices with limited resources requires careful and exhaustive exploration of the design search space in order to efficiently map modern applications to an embedded multi-processor platform. The MNEMEE project addresses this challenge by offering a unique integrated tool flow that performs source-to-source transformations to automatically optimize the original source code and map it on the target platform. The optimizations aim at reducing the number of memory accesses and the required memory storage of both dynamically and statically allocated data. Furthermore, the MNEMEE tool flow performs optimal assignment of all data on the memory hierarchy of the target platform. designers can use the whole flow or a part of it and integrate it into their own design flow. This paper gives an overview of the MNEMEE tool flow along. It also presents two industrial case studies that demonstrate who the techniques and tools developed in the MNEMEE project can be integrated into industrial design flows.

关键词： Optimization Memory management Manuals Resource management Dynamic scheduling Data structures Multimedia communication

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Application of mismatched Cellular Nonlinear Networks for Physical Cryptography

Application of mismatched Cellular Nonlinear Networks for Ph...

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IEEE International Workshop on Cellular Nanoscale Networks and their Applications, (CNNA)

作者： György Csaba Xueming Ju Zhiqian Ma Qingqing Chen Wolfgang Porod Jürgen Schmidhuber Ulf Schlichtmann Paolo Lugli Ulrich Rührmair Institute of Nanoelectronics Technical University Munich Munich Germany Center of Nano Science and Technology University of Notre Dame Notre Dame USA Cognitive Robotics Laboratory Technical University Munich Germany Institute of Electronic Design Automation Technical University Munich Germany Institute of Robotics and Embedded Systems Technical University Munich Germany

ISBN: (纸本)9781424466795;9781424466788

This paper proposes the use of Cellular Non-Linear Networks (CNNs) as physical uncloneable functions (PUFs). We argue that analog circuits offer higher security than existing digital PUFs and that the CNN paradigm allows us to build large, unclonable, and scalable analog PUFs, which still show a stable and repeatable input-output behavior. CNNs are dynamical arrays of locally-interconnected cells, with a cell dynamics that depends upon the interconnection strengths to their neighbors. They can be designed to evolve in time according to partial differential equations. If this If this equation describes a physical phenomenon, then the CNN can simulate a complex physical system on-chip. This can be exploited to create electrical PUFs with high relevant structural information content. To illustrate our paradigm at work, we design a circuit that directly emulates nonlinear wave propagation phenomena in a random media. It effectively translates the complexity of optical PUFs into electrical circuits.

关键词： Cellular networks Cryptography Cellular neural networks Analog circuits Integrated circuit interconnections Partial differential equations Nonlinear equations Circuit simulation System-on-a-chip Nonlinear wave propagation

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MODELING AND CONTROL OF ELEVATORS BY STATECHARTS

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Asian Journal of Control 2008年第2期6卷

作者： Yi-Sheng Huang Sheng-Luen Chung Mu-Der Jeng Department of Aeronautical Engineering Chung Cheng Institute of Technology National Defense University Tashi Taoyuan 335 Taiwan R.O.C. Department of Electrical Engineering National Taiwan University of Science and Technology Taipei 106 Taiwan R.O.C. Department of Electrical Engineering National Taiwan Ocean University Kellung 202 Taiwan R.O.C. MuDer Jeng received the Ph.D. degree in computer and systems engineering from Rensselaer Polytechnic Institute Troy NY in 1992. Since August 1992 Dr. Jeng has been with National Taiwan Ocean University Keelung Taiwan where he is currently a full Professor at the Department of Electrical Engineering. His current research interests include Petri nets discrete event systems computer integrated manufacturing semiconductor factory automation embedded systems. Dr. Jeng is the author/co-author of over 120 book chapters journal papers and conference papers. Dr. Jeng received the Franklin V. Taylor Outstanding Paper Award from the IEEE Systems Man and Cybernetics Society in 1993. He was granted the Research Award by the National Science Council of Taiwan annually from 1994 to 2000. He is an Associate Editor for IEEE Transactions on Systems Man and Cybernetics-Part A IEEE Transactions on Robotics and Automation IEEE Transactions on Robotics and serves on the Editorial Board of International Journal of Computer Integrated Manufacturing. He has been a Guest Editor for eight leading journals. Dr. Jeng is the Chair of the Technical Committee on Discrete Event Systems of the IEEE SMC Society and the Founding Chair of the Technical Committee on Semiconductor Factory Automation of the IEEE Robotics and Automation Society. He served as the Exhibitions Chair of 2003 IEEE International Conference on Robotics and Automation and the Special Sessions Chair of 2004 IEEE International Conference on Networking Sensing and Control. He serves as a Program Co-Chair of 2005 IEEE International Conference on Networking Sensing and Control and the Organization Commit

Statechart has been utilized as a visual formalism for the modeling of complex and interactive systems for its illuminating features on describing properties of causality, concurrency, and synchronization. This paper presents the application of satechart to the modeling, design and implementation of an elevator system, whose system behavior involves aggregating complexity of state descriptions, and imposition of underlying control policy. Based on the operational flow of an elevator, we derive the associated statechart model by looking into the inherent hierarchical structure of the elevator. The advantage of the proposed approach is the clear presentation of system behavior in terms of conditions and events that cause the transitions in system dynamics. Implementation of the controlled elevator based on the modeled statechart is also presented.

关键词： Statechart interactive systems elevator

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TRACKING CONTROL IN THE PRESENCE OF NONLINEAR DYNAMIC FRICTIONAL EFFECTS: ROBOT EXTENSION

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Asian Journal of Control 2008年第3期1卷

作者： M. Feemster D.M. Dawson A. Behal W. Dixon Matthew Feemster received the B.S degree in Electrical Engineering from Clemson University Clemson South Carolina in December 1994. Upon graduation he remained at Clemson University and received the M.S. degree in Electrical Engineering in 1997. During this time he also served as a research/teaching assistant. His research work focused on the design and implementation of various nonlinear control algorithms with emphasis on the induction motor and mechanical systems with friction present. He is currently working toward his Ph.D. degree in Electrical Engineering at Clemson University. Darren M. Dawson was born in 1962 in Macon Georgia. He received an Associate Degree in Mathematics from Macon Junior College in 1982 and a B.S. Degree in Electrical Engineering from the Georgia Institute of Technology in 1984. He then worked for Westinghouse as a control engineer from 1985 to 1987. In 1987 he returned to the Georgia Institute of Technology where he received the Ph.D. Degree in Electrical Engineering in March 1990. During this time he also served as a research/teaching assistant. In July 1990 he joined the Electrical and Computer Engineering Department and the Center for Advanced Manufacturing (CAM) at Clemson University where he currently holds the position of Professor. Under the CAM director's supervision he currently leads the Robotics and Manufacturing Automation Laboratory which is jointly operated by the Electrical and Mechanical Engineering departments. His main research interests are in the fields of nonlinear based robust adaptive and learning control with application to electro-mechanical systems including robot manipulators motor drives magnetic bearings flexible cables flexible beams and high-speed transport systems. Aman Behal was born in India in 1973. He received his Masters Degree in Electrical Engineering from Indian Institute of Technology Bombay in 1996. He is currently working towards a Ph.D in Controls and Robotics at Clemson University. His research focuses on the control of no

In this paper, we extend the observer/control strategies previously published in [25] to an n -link, serially connected, direct drive, rigid link, revolute robot operating in the presence of nonlinear friction effects modeled by the Lu-Gre model. In addition, we also present a new adaptive control technique for compensating for the nonlinear parameterizable Stribeck effects. Specifically, an adaptive observer/controller scheme is developed which contains a feedforward approximation of the Stribeck effects. This feedforward approximation is used in a composite controller/observer strategy which forces the average square integral of the position tracking error to an arbitrarily small value. Experimental results are included to illustrate the performance of the proposed controllers.

关键词： Friction compensation nonlinear control

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Interaction balance method for large-scale industrial processes with fuzzy constraints 10

Interaction balance method for large-scale industrial proces...

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10th IFAC/IFORS/IMACS/IFIP Symposium on Large Scale systems: Theory and Applications, LSS 2004

作者： Gu, Jia-Chen Wan, Bai-Wu Ruan, Xiao-E Automation Research and Design Institute of Metallurgical Industry Beijing China Systems Engineering Institute State Key Laboratory for Manufacturing Systems Engineering Xi 'an Jiaotong University Xi 'an China Dept.of Electrical Engineering and Computer Science Korea Advanced Institute of Science and Technology Daejeon Korea Republic of Faculty of Science Xi'an Jiaotong University Xi'an China

The interaction balance method (IBM) with fuzzy constraints is proposed for large-scale industrial processes under hierarchical steady-state optimization with the consideration of the model-reality difference and the constraints of subprocesses being flexible. In this approach, the models that are treated as equality constraints and the inequality constraints of the subprocesses are all fuzzified. Two cases of interaction balance method are studied: the open-loop IBM and the IBM with global feedback. Simulation results show that the solutions of the proposed method with global feedback are very close to the optimal solutions of the real process. © 2004 IFAC.

关键词： Large scale systems

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Interaction Balance Method for Large-scale Industrial Processes With Fuzzy Constraints 1

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IFAC Proceedings Volumes 2004年第11期37卷 423-428页

作者： Jia-Chen GU Bai-Wu WAN Xiao-E RUAN Automation Research and Design Institute of Metallurgical industry Beijing P R China Systems Engineering Institute State Key Laboratory for Manufacturing Systems Engineering Xi ‘an Jiaotong University Xi'an R R China Dept.of Electrical Engineering & Computer Science Korea Advanced Institute of Science and Technology Daejeon Korea Faculty of Science Xi'an Jiaotong University Xi'an P.R.China

关键词： Fuzzy models large-scale systems coordination constraints hierarchical control

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