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SECURITY ANALISYS OF ANTI-SYNCHRONIZATION CHAOS SHIFT KEYING METHOD VIA POWER AND RETURN MAP ANALYSES

SECURITY ANALISYS OF ANTI-SYNCHRONIZATION CHAOS SHIFT KEYING...

The Third International Conference on Dynamics,Vibration and control(第三届国际动力学、运动与控制学术会议)

作者： Sergej (C)elikovsk(y) Volodymyr Lynnyk Department of Control Engineering Faculty of Electrical EngineeringCzech Technical University in PragueCzech Republic Institute of Information Theory and Automation Academy of Sciences of the Czech RepublicP.O.Box 18182 08 Prague 8Czech Republic

During the last two decades, many chaotic communication schemes based on chaotic dynamics has been *** well-known features of the chaotic systems like strong dependence on the initial *** transitivity, wide spread spectrum of its signal, etc., directly suggest the idea to use suitable chaos generators to build a new generation of secure encryption ***, the use of the continuous time chaotic systems for encryption of digital data and both its practical aspects and security analysis have been studied much less cf.[1,12,13] due to prevalently used chaotic masking[3,14].

关键词： Nonlinear system chaos shift keying generalized Lorenz system synchronization anti-synchronization secure communication return map power analysis

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A Parametric Periodic Lyapunov Equation with Application in Semi-global Stabilization of Discrete-Time Periodic Systems Subject to Actuator Saturation

A Parametric Periodic Lyapunov Equation with Application in ...

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American control Conference

作者： Bin Zhou Guang-Ren Duan Zongli Lin Center for Control Theory and Guidance Technology Harbin Institute of Technology Harbin Heilongjiang 150001 China Charles L. Brown Department of Electrical and Computer Engineering University of Virginia Charlottesville VA 22904-4743 U.S.A.

ISBN: (纸本)9781424474264

This paper is concerned with semi-global stabilization of discrete-time linear periodic systems subject to actuator saturation. Provided that the open loop characteristic multipliers are within the closed unit circle, a low gain feedback design approach is proposed to solve the problem by state feedback. Our approach is based on the solution to a parametric discrete-time periodic Lyapunov equation. The proposed approaches not only generalize the corresponding results for time-invariant systems to periodic systems, but also reveal some important intrinsic properties of this class of periodic matrix equations. A numerical example is worked out to illustrate the effectiveness of the proposed approaches.

关键词： Periodic system Lyapunov equation State feedback discrete-time Time invariant systems discrete time systems Periodic Unit circle actuators Parametric

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Model reduction of homogeneous-in-the-state bilinear systems with input constraints

Model reduction of homogeneous-in-the-state bilinear systems...

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American control Conference

作者： I.J. Couchman E.C. Kerrigan C. Bohm Department of Electrical and Electronic Engineering and the Department of Aeronautics Imperial College London Exhibition Road London SW7 2AZ Institute for Systems Theory and Automatic Control University of Stuttgart Pfaffenwaldring 9 70550 Stuttgart Germany

ISBN: (纸本)9781424474264

Homogeneous-in-the-state bilinear systems, appended by an additive disturbance, appear both from the discretization of some partial differential equations and from the bilinearization of certain nonlinear systems. They often have large state vectors that can be cumbersome for simulation and control system design. Our aim is to define a method, invariant to time transformations, for finding a reduced-order model with similar disturbance-output characteristics to those of the plant for all admissible input sequences. The inputs considered satisfy simple upper and lower bound constraints, representing saturating actuators. The approximation is based on a model truncation approach and a condition for the existence of such an approximation is given in terms of the feasibility of a set linear matrix inequalities. A novelty of our work is in the definition of a new Gramian for this class of system. Explicit error bounds on the scheme are included.

关键词： Reduced order systems Nonlinear systems Actuators Nonlinear control systems Large-scale systems Open loop systems Partial differential equations control system synthesis Linear matrix inequalities Additives

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Simulation of the turbulences for multi-W wind turbine

Simulation of the turbulences for multi-W wind turbine

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作者： Qiu, Shaojun Jiang, Shilong Lou, Yunjiang Li, Wenbo Liu, Chaochuan Hu, Xuguang Harbin Institute of Technology Shenzhen Graduate School Shenzhen 518055 China Institution of Motion Control Technology PKU-HKUST ShenZhen-HongKong Institution Shenzhen 518057 China Harbin Institute of Technology Control Theory and Science Post-Doctoral Mobile Stations Shenzhen 518055 China School of Electrical Engineering Zhengzhou University Zhengzhou 450001 China

ISBN: (纸本)9787894631046

MW wind turbine has become the mainstream, they nearly all use the variable pitch control to regulate the power output. In this paper, we take the electric variable pitch control wind turbine as the research object, analyze the kinds of turbulences on the blade. For an aerofoil of the blade, when the point of the center of mass, the dynamic point and the blade axis point are not the same, there would be centrifugal force, gravity, aerodynamic forces acting on the blade, and they all will influence the rotation of the blade about the blade axis. Here, introduction and analysis has been done focusing on the turbulences., especially simulation in MATLAB.

关键词： Wind turbines

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Robust formation control for nonlinear mobile sensors in target tracking

Robust formation control for nonlinear mobile sensors in tar...

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2010第六届全国多智能体系统与控制学术年会

作者： Hu Jiangping Hong Yiguang Hu Xiaoming School of Automation Engineering University of Electronic Science and Technology of China 611731 Che Key Lab of Systems and Control Institute of Systems ScienceChinese Academy of SciencesBeijing 1001 0ptimization and Systems Theory and ACCESS Linnaeus Center Royal Institute of TechnologySE-100 44 S

Collaborative signal processing and sensor deployment have been among the most important research tasks in target tracking using networked *** this paper,a convergent nonlinear filter is constructed to track a target using mobile nonlinear scalar range *** robust formation control is proposed for the mobile sensor network to achieve a desired deployment to guarantee the nonlinear convergent ***,a numerical example is given to illustrate the proposed tracking algorithm.

关键词： Target tracking convergent nonlinear observer-based filter formation control mobile sensors

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Passive decoy-state quantum key distribution with practical light sources

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Physical Review A 2010年第2期81卷 022310-022310页

作者： Marcos Curty Xiongfeng Ma Bing Qi Tobias Moroder ETSI Telecomunicación Department of Signal Theory and Communications University of Vigo Campus Universitario E-36310 Vigo (Pontevedra) Spain Institute for Quantum Computing & Department of Physics and Astronomy University of Waterloo N2L 3G1 Waterloo Ontario Canada Center for Quantum Information and Quantum Control Department of Physics and Department of Electrical & Computer Engineering University of Toronto M5S 3G4 Toronto Ontario Canada Quantum Information Theory Group Institute of Theoretical Physics I University of Erlangen-Nürnberg D-91058 Erlangen Germany Max Planck Institute for the Science of Light D-91058 Erlangen Germany

Decoy states have been proven to be a very useful method for significantly enhancing the performance of quantum key distribution systems with practical light sources. Although active modulation of the intensity of the laser pulses is an effective way of preparing decoy states in principle, in practice passive preparation might be desirable in some scenarios. Typical passive schemes involve parametric down-conversion. More recently, it has been shown that phase-randomized weak coherent pulses (WCP) can also be used for the same purpose [M. Curty et al., Opt. Lett. 34, 3238 (2009).] This proposal requires only linear optics together with a simple threshold photon detector, which shows the practical feasibility of the method. Most importantly, the resulting secret key rate is comparable to the one delivered by an active decoy-state setup with an infinite number of decoy settings. In this article we extend these results, now showing specifically the analysis for other practical scenarios with different light sources and photodetectors. In particular, we consider sources emitting thermal states, phase-randomized WCP, and strong coherent light in combination with several types of photodetectors, like, for instance, threshold photon detectors, photon number resolving detectors, and classical photodetectors. Our analysis includes as well the effect that detection inefficiencies and noise in the form of dark counts shown by current threshold detectors might have on the final secret key rate. Moreover, we provide estimations on the effects that statistical fluctuations due to a finite data size can have in practical implementations.

关键词： Photodetectors

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Enlarging the terminal region of nmpc with parameter-dependent terminal control law

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作者： Yu, Shuyou Chen, Hong Böhm, Christoph Allgöwer, Frank Institute for Systems Theory and Automatic Control University of Stuttgart Germany Department of Control Science and Engineering Jilin University China

ISBN: (纸本)9783642010934

Nominal stability of a quasi-infinite horizon nonlinear model predictive control (QIH-NMPC) scheme is obtained by an appropriate choice of the terminal region and the terminal penalty term. This paper presents a new method to enlarge the terminal region, and therefore the domain of attraction of the QIH-NMPC scheme. The proposed method applies a parameter-dependent terminal controller. The problem of maximizing the terminal region is formulated as a convex optimization problem based on linear matrix inequalities. Compared to existing methods using a linear time-invariant terminal controller, the presented approach may enlarge the terminal region significantly. This is confirmed via simulations of an example system. © 2009 Springer Berlin Heidelberg.

关键词： Linear matrix inequalities

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Passive sources for the Bennett-Brassard 1984 quantum-key-distribution protocol with practical signals

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Physical Review A 2010年第5期82卷 052325-052325页

作者： Marcos Curty Xiongfeng Ma Hoi-Kwong Lo Norbert Lütkenhaus ETSI Telecomunicación Department of Signal Theory and Communications University of Vigo Campus Universitario E-36310 Vigo Pontevedra Spain Institute for Quantum Computing & Department of Physics and Astronomy University of Waterloo Waterloo Ontario N2L 3G1 Canada Center for Quantum Information and Quantum Control Department of Physics and Department of Electrical & Computer Engineering University of Toronto Toronto Ontario M5S 3G4 Canada

Most experimental realizations of quantum key distribution are based on the Bennett-Brassard 1984 (the so-called BB84) protocol. In a typical optical implementation of this scheme, the sender uses an active source to produce the required BB84 signal states. While active state preparation of BB84 signals is a simple and elegant solution in principle, in practice passive state preparation might be desirable in some scenarios, for instance, in those experimental setups operating at high transmission rates. Passive schemes might also be more robust against side-channel attacks than active sources. Typical passive devices involve parametric down-conversion. In this paper, we show that both coherent light and practical single-photon sources are also suitable for passive generation of BB84 signal states. Our method does not require any externally driven element, but only linear optical components and photodetectors. In the case of coherent light, the resulting key rate is similar to the one delivered by an active source. When the sender uses practical single-photon sources, however, the distance covered by a passive transmitter might be longer than that of an active configuration.

关键词： Side channel attack

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A communication-based distributed model predictive control scheme with time-varying consistency constraints 10

A communication-based distributed model predictive control s...

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2009 10th European control Conference, ECC 2009

作者： Dold, Johannes Stursberg, Olaf Institute of Control and System Theory Department of Electrical Engineering and Computer Science University of Kassel Germany

ISBN: (纸本)9783952417393

A communication-based distributed model predictive control scheme for a set of dynamically decoupled autonomous systems (agents) is proposed. The individual dynamics are described by discrete-time linear systems. Locally, each agent obeys a model predictive controller which minimizes a given local cost-function. Coupling between the agents occurs only through state-constraints. It is assumed that an initial feasible solution for the centralized optimization problem can only be found in a suboptimal manner due to computational limits. Then, the agents can decrease their local costs by replanning in each time step. This has to be done in a consistent way which is obtained by communicating local predicted trajectories under consideration of communication delays. © 2009 EUCA.

关键词： Cost functions

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Hierarchical hybrid modeling and control of flexible manufacturing systems 10

Hierarchical hybrid modeling and control of flexible manufac...

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2009 10th European control Conference, ECC 2009

作者： Paschedag, Tina Rungger, Matthias Ding, Hao Stursberg, Olaf Institute of Control and System Theory Department of Electrical Engineering and Computer Science University of Kassel Germany

ISBN: (纸本)9783952417393

In current manufacturing systems, short times for product development and ramp-up as well as high production rates and customized products are of increasing importance. To push the efficiency (and thus the economic gain) of production further, recent investigations combine aspects of flexible manufacturing systems with modeling and optimization techniques from the hybrid systems domain. Within this context, the contribution of this paper is two-fold: (1) a hierarchical modeling scheme is presented which suitably represents the plant dynamics on two distinct levels of detail comprising timed and hybrid automata, (2) an approach to adapt production online to changes in product specifications or production constraints by combining high-level generation of optimal production schedules with low-level learning- and model-based control. © 2009 EUCA.

关键词： Flexible manufacturing systems

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