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2011 4th International Symposium on Resilient Control Systems

9-11 Aug. 2011

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Displaying Results 1 - 25 of 35
  • [Title page]

    Publication Year: 2011, Page(s):1 - 2
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  • Keynote speeches

    Publication Year: 2011, Page(s):3 - 4
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  • Human systems

    Publication Year: 2011, Page(s):5 - 6
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  • Toward providing guidance for procedure design: Formal definitions of procedure characteristics

    Publication Year: 2011, Page(s):7 - 12
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (741 KB) | HTML iconHTML

    A framework has been developed that is focused on providing guidance for the design of procedures and checklists. The framework identifies characteristics of the procedure and environment that could influence procedure following behavior, and formal definitions of those factors are introduced. In addition, tradeoffs between the factors that can be controlled by procedure designers are described. T... View full abstract»

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  • Cyber awareness

    Publication Year: 2011, Page(s):13 - 14
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  • A hierarchical security architecture for cyber-physical systems

    Publication Year: 2011, Page(s):15 - 20
    Cited by:  Papers (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (664 KB) | HTML iconHTML

    Security of control systems is becoming a pivotal concern in critical national infrastructures such as the power grid and nuclear plants. In this paper, we adopt a hierarchical viewpoint to these security issues, addressing security concerns at each level and emphasizing a holistic cross-layer philosophy for developing security solutions. We propose a bottom-up framework that establishes a model f... View full abstract»

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  • A reference architecture approach to ICS security

    Publication Year: 2011, Page(s):21 - 25
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (347 KB) | HTML iconHTML

    This paper describes the potential for use of a reference architecture for industrial control system (ICS) security as a method for moving toward improved protection through better decision-making. View full abstract»

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  • Towards resilient critical infrastructures: Application of Type-2 Fuzzy Logic in embedded network security cyber sensor

    Publication Year: 2011, Page(s):26 - 32
    Cited by:  Papers (2)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (927 KB) | HTML iconHTML

    Resiliency and cyber security of modern critical infrastructures is becoming increasingly important with the growing number of threats in the cyber environment. This paper proposes an extension to a previously developed fuzzy logic based anomaly detection network security cyber sensor via incorporating Type-2 Fuzzy Logic (T2 FL). In general, fuzzy logic provides a framework for system modeling in ... View full abstract»

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  • Data fusion

    Publication Year: 2011, Page(s):33 - 34
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  • Anomaly detection for resilient control systems using fuzzy-neural data fusion engine

    Publication Year: 2011, Page(s):35 - 41
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (988 KB) | HTML iconHTML

    Resilient control systems in critical infrastructures require increased cyber-security and state-awareness. One of the necessary conditions for achieving the desired high level of resiliency is timely reporting and understanding of the status and behavioral trends of the control system. This paper describes the design and development of a fuzzy-neural data fusion system for increased state-awarene... View full abstract»

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  • Correction of erroneously-trained adaptive neural networks

    Publication Year: 2011, Page(s):42 - 45
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (449 KB) | HTML iconHTML

    Applications of adaptive neural network models, i.e. models that are updated while they are used, are becoming more widespread. Adjustments to an adaptive model are based on a feedback which is collected while the model is in operation. While changing model parameters in production can improve the performance, itcomes with inherent risks. In particular, any erroneous adjustment to an online model ... View full abstract»

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  • Complex networked control systems

    Publication Year: 2011, Page(s):46 - 48
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  • Remote output feedback stabilization for fractional-order systems via communication networks

    Publication Year: 2011, Page(s):49 - 54
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (474 KB) | HTML iconHTML

    In this study, the problem of remote output feedback stabilization for fractional-order (FO) systems with input time-varying delay via communication networks is investigated. The order of the FO system denoted by α considered in this paper is in the range of 0 to 2. Additionally, the network induced time-varying delay is considered as being generated by a known FO dynamic system. We design ... View full abstract»

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  • Resilient design of recharging station networks for electric transportation vehicles

    Publication Year: 2011, Page(s):55 - 60
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1653 KB) | HTML iconHTML

    As societies shift to “greener” means of transportation using electricity-driven vehicles one critical challenge we face is the creation of a robust and resilient infrastructure of recharging stations. A particular issue here is the optimal location of service stations. In this work, we consider the placement of battery replacing service station in a city network for which the normal... View full abstract»

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  • Resilient monitoring system: Design and performance analysis

    Publication Year: 2011, Page(s):61 - 68
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (369 KB) | HTML iconHTML

    This paper is devoted to the design and performance analysis of an autonomous decentralized monitoring system that degrades gracefully under natural or malicious sensor malfunctioning. In the scenario considered, the sensors are characterized by a quantity referred to as data quality, and a method for estimating process variables, based on sensor measurements and data quality, is developed. Using ... View full abstract»

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  • State-based adjoint model reduction for large scale control problems

    Publication Year: 2011, Page(s):69 - 74
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2449 KB) | HTML iconHTML

    Design of robust control systems requires efficient ways to compute variations of responses of interest with respect to a wide range of variations for a large number of initial conditions. This is necessary in order to perform engineering oriented applications such as design optimization, inverse studies, and sensitivity analysis. A reduced order model based on an adjoint approach that takes advan... View full abstract»

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  • Supervisory control of a pilot-scale cooling loop

    Publication Year: 2011, Page(s):75 - 80
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (419 KB) | HTML iconHTML

    We combine a previously developed strategy for Fault Detection and Identification (FDI) with a supervisory controller in closed loop. The combined method is applied to a model of a pilot-scale cooling loop of a nuclear plant, which includes Kalman filters and a model-based predictive controller as part of normal operation. The system has two valves available for flow control meaning that some redu... View full abstract»

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  • Smart grid

    Publication Year: 2011, Page(s):81 - 82
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  • Distributed multi-agent microgrids: a decentralized approach to resilient power system self-healing

    Publication Year: 2011, Page(s):83 - 88
    Cited by:  Papers (20)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (636 KB) | HTML iconHTML

    The predominance of recent self-healing power system research has been directed towards centralized command and control functions. In this paper, a decentralized multi-agent control method for distributed microgrids is introduced. Given the complexity of a large power system spanning hundreds of miles and comprised of numerous microgrids, it is potentially unrealistic to expect that centralizing t... View full abstract»

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  • High-quality integration of fuel cells energy into electric grids

    Publication Year: 2011, Page(s):89 - 94
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (786 KB) | HTML iconHTML

    This paper investigates different converter topologies, and their control, that can be used as an interface between fuel cells and the DC bus in a power system. As an example, the integration of fuel cells energy to the DC bus in a DC zonal electric distribution system (DC ZEDS) will be focused on. The DC ZEDS example is reasonable as high-quality power supply is interesting the most for the US na... View full abstract»

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  • Performance of soft-switched DC-DC resonant converter for Electrolyzer

    Publication Year: 2011, Page(s):95 - 100
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (509 KB) | HTML iconHTML

    Electrolyzer produces hydrogen and oxygen from off-peak electricity generated by the renewable energy sources (wind turbine and photovoltaic array), for later use in the fuel cell to produce on-peak electricity. A power conditioning system, usually a DC-DC converter is required to couple the Electrolyzer to the system bus. This paper presents the design of three soft-switched high-frequency transf... View full abstract»

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  • Trust and reputation approach to smart grid security

    Publication Year: 2011, Page(s):101 - 104
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (442 KB) | HTML iconHTML

    The electric grid in the US is aging and needs to be upgraded. Solutions involve the use of equipment with wireless communication capability for monitoring of generation, transmission and distribution. These systems introduce vulnerabilities to attack that can lead to blackouts and damage to equipment. In order to increase the reliability of the power systems, it is important to detect sources of ... View full abstract»

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  • Multi-sensor fusion and cooperative robot control

    Publication Year: 2011, Page(s):105 - 106
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  • Aggregation of heterogeneous units in a swarm of robotic agents

    Publication Year: 2011, Page(s):107 - 112
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (418 KB) | HTML iconHTML

    Formation of patterns in a system of interacting units of heterogeneous types is a self-organized behavior which is seen in many biological systems. Earlier research in this area has indicated that such pattern formation behaviors in biological cells and tissues are made possible because of difference in the adhesivity between different types of cells or tissues. Inspired by this differential adhe... View full abstract»

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  • Ecologically inspired cooperative control of multi-robot systems

    Publication Year: 2011, Page(s):113 - 118
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (584 KB) | HTML iconHTML

    In this paper we propose a new ecologically inspired control methodology for cooperative control of multi-robot systems. In this method we identify each individual robot as a subsystem of a large system and build the interactions between these subsystems to satisfy the design requirements. Interactions between these subsystems are built such that they mimic the interspecific (between species) inte... View full abstract»

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