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2009 European Control Conference (ECC)

23-26 Aug. 2009

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Displaying Results 1 - 25 of 842
  • Welcome

    Publication Year: 2009, Page(s):1 - 5
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  • About EUCA

    Publication Year: 2009, Page(s):1 - 4
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  • Committees

    Publication Year: 2009, Page(s): 1
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  • Sponsors

    Publication Year: 2009, Page(s): 1
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  • Program

    Publication Year: 2009, Page(s):1 - 4
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  • Papers

    Publication Year: 2009, Page(s):1 - 30
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  • Authors' index

    Publication Year: 2009, Page(s):1 - 14
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  • Nonparametric preprocessing in system identification: A powerful tool

    Publication Year: 2009, Page(s):1 - 14
    Cited by:  Papers (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (347 KB) | HTML iconHTML

    In this paper we study the properties of existing non-parametric methods for estimating the plant and noise transfer functions of a linear dynamic system. The analysis is based on the recent insight that leakage errors in the frequency domain have a smooth nature that is completely similar to the initial transients in the time domain. This not only allows us to understand better the existing class... View full abstract»

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  • Dwell time analysis of deterministic and stochastic switched systems

    Publication Year: 2009, Page(s):15 - 31
    Cited by:  Papers (21)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (261 KB) | HTML iconHTML

    This paper collects a number of recent results on stability and L2 gain of switched linear systems (both deterministic and stochastic) under a dwell time constraint. The switching signal orchestrates the commutations between linear systems (in the deterministic case) or Markov jump linear systems (in the stochastic case). In the latter case, the switching affects both the dynamics of th... View full abstract»

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  • A controllability condition for the existence of average optimal stationary policies of linear stochastic systems

    Publication Year: 2009, Page(s):32 - 37
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (220 KB) | HTML iconHTML

    This paper establishes conditions for the existence of optimal stationary policies for the long-run average cost control problem of linear stochastic systems. The control takes a general structure in such a manner that it contains, as particular case, a large number of linear control problems. The main contribution of this paper is to show that if (i) the system is controllable to the origin and (... View full abstract»

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  • A bounded cost condition for the existence of average optimal stationary policies of linear stochastic systems

    Publication Year: 2009, Page(s):38 - 42
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (242 KB) | HTML iconHTML

    This note considers the long-run average cost control problem of a discrete-time stochastic system. The stochastic system is assumed to be linear with respect to the state but the controls possess a general structure, possibly nonlinear. The main contribution of this paper is to show the existence of an optimal stationary policy for the long-run average cost problem provided that (i) there exists ... View full abstract»

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  • Robust H∞ output-feedback control of state-multiplicative stochastic systems with delay

    Publication Year: 2009, Page(s):43 - 48
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (269 KB) | HTML iconHTML

    Linear, state delayed, continuous-time systems are considered with both stochastic and norm-bounded deterministic uncertainties in the state-space model. The problem of robust dynamic H∞ output-feedback control is solved, for the stationary case, via the input-output approach where the system is replaced by a nonretarded system with additional deterministic norm-bounded uncertain... View full abstract»

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  • Gaussian mixture filtering for range only tracking problems

    Publication Year: 2009, Page(s):49 - 54
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (316 KB) | HTML iconHTML

    Range only tracking problems arise in extended data collection for inverse synthetic radar applications, robotics, navigation and other areas. For such problems, the conditional density of the state variable given the measurement history is multi-modal or exhibits curvature, even in seemingly benign scenarios. For this reason, the use of extended Kalman filter (EKF) and other nonlinear filtering t... View full abstract»

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  • Stochastic control over finite capacity channels: Causality and feedback

    Publication Year: 2009, Page(s):55 - 60
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (191 KB) | HTML iconHTML

    Optimal communication/control analysis and design of dynamical controlled systems, when there are finite capacity communication constraints often involve information and control theoretic analysis. This paper, employees information theoretic concepts, which are subject to causality, and thus applicable to control/communication system analysis and design in which encoders, decoders and controllers ... View full abstract»

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  • Guaranteed cost control for uncertain stochastic multimodeling systems

    Publication Year: 2009, Page(s):61 - 66
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (259 KB) | HTML iconHTML

    The guaranteed cost control problem for stochastic multimodeling systems with norm bounded uncertainty is investigated. The main contribution in this paper is that a new parameter independent controller is derived by solving the reduced-order slow and fast stochastic algebraic Riccati equations (SAREs) whose dimension is smaller than the dimension of full-order stochastic multimodeling algebraic R... View full abstract»

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  • LMI-based estimation of the domain of attraction of equilibrium points for nonlinear non-polynomial dynamical systems

    Publication Year: 2009, Page(s):67 - 72
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (263 KB) | HTML iconHTML

    Estimating the domain of attraction of equilibrium points of nonlinear systems is an important problem in numerous fields. Recently, some methods based on LMIs have been developed for addressing this problem in the case of polynomial systems. This paper proposes an approach for extending the use of LMIs to the case of non-polynomial systems. In particular, it is shown how the estimate achievable w... View full abstract»

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  • Stability analysis of dynamical systems via R-functions

    Publication Year: 2009, Page(s):73 - 78
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (576 KB) | HTML iconHTML

    This paper provides a new method to estimate the Region of Asymptotic Stability (RAS) via computing the union of several regions, each one of them is known to be a subset of the RAS. The union is computed analytically by using R-functions, which represent a natural extension of Boolean functions to real-valued functions. The benefit of the proposed approach is that usually the best Lyapunov functi... View full abstract»

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  • Stability analysis of finite-level quantized linear control systems

    Publication Year: 2009, Page(s):79 - 84
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (348 KB) | HTML iconHTML

    In this paper we investigate the stability of discrete-time linear time-invariant systems subject to finite-level logarithmic quantized feedback. Both state feedback and output feedback are considered. We develop an LMI approach to estimate, for a given controller and a given finite-level quantizer, a set of admissible initial states and an associated attractor set in a neighborhood of the origin ... View full abstract»

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  • Stability region estimation for systems with unmodeled dynamics

    Publication Year: 2009, Page(s):85 - 90
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (193 KB) | HTML iconHTML

    We propose a method to compute invariant subsets of the robust region-of-attraction for the asymptotically stable equilibrium points of systems with polynomial nominal vector fields and unmodeled dynamics. The effects of unmodeled dynamics are accounted for as systems satisfying certain gain relations or dissipation inequalities. The methodology is extended to systems with parametric uncertainties... View full abstract»

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  • Domains of attraction of interconnected systems: A Zubov method approach

    Publication Year: 2009, Page(s):91 - 96
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (232 KB) | HTML iconHTML

    We study feedback interconnections of two nonlinear systems, that are asymptotically stable at a fixed point. It is shown that if the subsystems are input-to-state stable and the corresponding gains satisfy a small gain condition, then estimates for the domain of attraction of the whole system may be obtained by calculating robust Lyapunov functions for the subsystems. The latter task can be solve... View full abstract»

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  • A computational method for non-convex reachable sets using optimal control

    Publication Year: 2009, Page(s):97 - 102
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (239 KB) | HTML iconHTML

    A computational method for the approximation of reachable sets for non-linear dynamic systems is suggested. The method is based on a discretization of the interesting region and a projection onto grid points. The projections require to solve optimal control problems which are solved by a direct discretization approach. These optimal control problems allow a flexible formulation and it is possible ... View full abstract»

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  • Problem of vertical passing an obstacle by an aircraft under wind disturbances

    Publication Year: 2009, Page(s):103 - 108
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (295 KB) | HTML iconHTML

    Methods of the differential game theory are applied to the problem of overpassing a vertical obstacle by an aircraft. An algorithm is suggested for constructing the aircraft control by the thrust and elevator that is adaptive with respect to the unknown level of a wind disturbance. The state constraint on the pitch angle is implicitly taken into account. Simulation results are presented. View full abstract»

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  • Multi UAV negotiation for coordinated tracking of contaminant cloud

    Publication Year: 2009, Page(s):109 - 114
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (467 KB) | HTML iconHTML

    In this paper, we develop a mechanism to detect and model the shape of a contaminant cloud boundary using air borne sensor swarms. The UAV sensors detect discrete points on the boundary of a contaminant cloud, which is used for cloud modeling. The shape of the cloud evolves with the measurement data from the UAV sensors, which in turn indicates the region where the UAVs should explore for better a... View full abstract»

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  • Coordination strategies between UAV and AUVs for ocean exploration

    Publication Year: 2009, Page(s):115 - 120
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (245 KB) | HTML iconHTML

    Autonomous underwater vehicles (AUVs) have limited and low bandwidth communication capabilities. In order to communicate a host, they need to surface. To increase the operational period of the AUVs and decrease the surfacing time, we deploy a single Unmanned aerial vehicle (UAV) that cooperates with AUVs in performing an ocean exploration mission efficiently. A team of AUVs are deployed in the oce... View full abstract»

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  • A pursuit-evasion game with hybrid evader dynamics

    Publication Year: 2009, Page(s):121 - 126
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (479 KB) | HTML iconHTML

    A pursuit-evasion differential game of hybrid dynamics with bounded controls and a prescribed duration is considered. The evader has two possible dynamics, while the dynamics of the pursuer is fixed. The evader can change its dynamics once during the game. The pursuer knows the set of possible evader dynamics, but not the actual one. The solution of this game is obtained by introducing a new state... View full abstract»

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