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IEEE Conference on Industrial Electronics and Applications (ICIEA)

作者： Blazej Cichy Krzysztof Galkowski Eric Rogers Anton Kummert Institute of Control and Computation Engineering University of Zielona Góra Gora Poland School of Electronics and Computer Science University of Southampton Southampton UK Faculty of Electrical Information and Media Engineering Communication Theory University of Wuppertal Wuppertal Germany

ISBN: (纸本)9781424427994

Repetitive processes are a distinct class of two-dimensional (2D) systems (i.e. information propagation in two independent directions occurs) of both systems theoretic and applications interest. They cannot be controlled by direct extension of existing techniques from either standard (termed 1D here) or (often) 2D systems theory. In this paper we begin the development a systems theory for a model of these processes necessary to represent terms which arise in some applications areas but are not included in the currently used models.

关键词： Stability Linear systems Smoothing methods control systems Iterative algorithms Communication system control Optimal control Signal processing algorithms control engineering computing RNA

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Tire slip fuzzy control of a laboratory Anti-lock Braking System

Tire slip fuzzy control of a laboratory Anti-lock Braking Sy...

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European control Conference (ECC)

作者： Mircea-Bogdan Rădac Radu-Emil Precup Stefan Preitl József K. Tar Keith J. Burnham Department of Automation and Applied Informatics “Politehnica” University of Timisoara Timisoara Romania Institute of Intelligent Engineering Systems Budapest Tech Polytechnical Institution Budapest Hungary Control Theory and Applications Centre Coventry University Coventry UK

A tire slip fuzzy control solution is designed and implemented in the framework of an Anti-lock Braking System (ABS) comprising a highly nonlinear controlled plant. The fuzzy controllers are designed to work for locally linearized models of the plant. Their parameters are tuned by mapping from simple PI controllers in terms of the modal equivalence principle. The experience from the experiments is incorporated in the design of the rules and the stability analysis enables the controller design. The benefits of filtering the input of the fuzzy controller are highlighted in real-time experimental results.

关键词： Wheels Tires Stability analysis Actuators Friction Fuzzy control Mathematical model

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Tire slip fuzzy control of a laboratory anti-lock braking system 10

Tire slip fuzzy control of a laboratory anti-lock braking sy...

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2009 10th European control Conference, ECC 2009

作者： Radac, Mircea-Bogdan Precup, Radu-Emil Preitl, Stefan Tar, Jozsef K. Burnham, Keith J. Department of Automation and Applied Informatics 'Politehnica' University of Timisoara Bd. V. Parvan 2 Timisoara300223 Romania Institute of Intelligent Engineering Systems Budapest Tech Polytechnical Institution Bécsi út 96/B Budapest1034 Hungary Control Theory and Applications Centre Coventry University Armstrong Siddeley Building Priory Street CoventryCV1 5FB United Kingdom

ISBN: (纸本)9783952417393

关键词： Fuzzy control

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Combined time and fuel optimal driving of trucks based on a hybrid model

Combined time and fuel optimal driving of trucks based on a ...

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European control Conference (ECC)

作者： Benjamin Passenberg Peter Kock Olaf Stursberg Faculty of Electrical and Computer Engineering Technical University of Munich Munich Germany Central Engineering Devision of MAN Nutzfahrzeuge AG Munich Germany Kingston University London GB Institute of Control and System Theory (FB16-RST) University of Kassel Kassel Germany

This paper presents a control strategy for driving trucks on economically optimal speed trajectories over a-priori known road slope profiles. By considering the trip income and costs, the approach leads to an ecological and economic advantage by reducing the fuel consumption and maximizing the profit of transportation at the same time. The optimization task for a truck is formulated as an open-loop, finite-horizon optimal control problem, which is repetitively solved as part of a model predictive control framework. The truck dynamics is represented as a hybrid nonlinear model and a multi-point boundary-value problem (MPBVP) is obtained using Karush-Kuhn-Tucker conditions, the Pontryagin minimum principle for input constraints, interior boundary conditions for state constraints and interior point constraints for gear shifts. The MPBVP is solved numerically by a multiple shooting algorithm. Results are validated in simulations and compared to an ordinary speed controller.

关键词： Decision support systems Europe Fuels Xenon

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Properties of the Parametric Lyapunov Equation Based Low Gain Design with Applications in Stabilization of Time-Delay Systems

Properties of the Parametric Lyapunov Equation Based Low Gai...

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2009 American control Conference (ACC 2009)

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

ISBN: (纸本)9781424445233

This paper studies some properties of the recently developed parametric Lyapunov equation based low gain feedback design method. As applications of these new properties, alternative and simpler solutions are proposed to the (global) stabilization problem for a class of linear systems with input delay and the semi-global stabilization problem when the systems are in addition subject to actuator saturation. Besides the simplicity in their construction, the new solutions can also be easily scheduled online to achieve global result in the presence of input saturation.

关键词： Linear systems control systems Delay systems Hydraulic actuators Delay estimation Riccati equations Nonlinear equations Lyapunov method Output feedback Design methodology

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Distributed shift target estimation using multiple cooperative agents

Distributed shift target estimation using multiple cooperati...

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Asian control Conference

作者： Jiangping Hu Yiguang Hong Xiaoming Hu School of Automation Engineering University of Electronic Science and Technology Chengdu China Kay Laboratory of Systems and Control Academy of Mathematics and Systems Science Chinese Academy and Sciences Beijing China Optimization and Systems Theory Royal Institute of Technology Stockholm Sweden

In this paper we discuss the estimation of a moving target by cooperative agents equipped with sensors. To locate a moving target, a distributed algorithm is given for the networked agents based on a time-based shift. A nonlinear filter with fusing collected sensor information is proposed to estimate the trajectory of the target with unknown dynamics. The convergence of the estimation in the sensor network is analyzed and proved via a theoretic approach.

关键词： Trajectory Collaboration Information processing Sensor fusion Target tracking Convergence Information filtering Information filters Robotics and automation Distributed algorithms

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LMI based design for the Acrobot walking *

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IFAC Proceedings Volumes 2009年第16期42卷 461-466页

作者： Milan Anderle Sergej Čelikovský Didier Henrion Jiří Zikmund Czech Technical University in Prague Faculty of Electrical Engineering Department of Control Engineering Technická 2 166 27 Prague Czech Republic Institute of Information Theory and Automation Academy of Sciences of the Czech Republic Pod vodárenskou věží 4 182 08 Prague Czech Republic LAAS-CNRS University of Toulouse 7 avenue du colonel Roche 31077 Toulouse France

Abstract This paper aims to further improve previously developed design for Acrobot walking based on partial exact feedback linearization of order 3. Namely, such an exact system transformation leads to an almost linear system where error dynamics along trajectory to be tracked is a 4-dimensional linear time-varying system having 3 time-varying entries only, the remaining entries being either zero or one. In such a way, exponentially stable tracking can be obtained by quadratically stabilizing a linear system with polytopic uncertainty. The current improvement is based on applying LMI methods to solve this problem numerically. This careful analysis significantly improves previously known approaches. Numerical simulations of Acrobot walking based on the above mentioned LMI design are demonstrated as well.

关键词： Linear matrix inequalities (LMI) underactuated mechanical systems walking robots

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Upper bounds for the secure key rate of the decoy-state quantum key distribution

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Physical Review A 2009年第3期79卷 032335-032335页

作者： Marcos Curty Tobias Moroder Xiongfeng Ma Hoi-Kwong Lo Norbert Lütkenhaus Department of Signal Theory and Communications ETSI Telecomunicación University of Vigo Campus Universitario E-36310 Vigo (Pontevedra) Spain Institute for Quantum Computing University of Waterloo Waterloo Ontario Canada N2L 3G1 Quantum Information Theory Group Institut für Theoretische Physik I and Max-Planck Research Group Institute of Optics Information and Photonics University of Erlangen–Nürnberg 91058 Erlangen Germany Department of Electrical and Computer Engineering and Department of Physics Center for Quantum Information and Quantum Control (CQIQC) University of Toronto Toronto Ontario Canada M5S 3G4

The use of decoy states in quantum key distribution (QKD) has provided a method for substantially increasing the secret key rate and distance that can be covered by QKD protocols with practical signals. The security analysis of these schemes, however, leaves open the possibility that the development of better proof techniques or better classical postprocessing methods might further improve their performance in realistic scenarios. In this paper, we derive upper bounds on the secure key rate for decoy-state QKD. These bounds are based basically only on the classical correlations established by the legitimate users during the quantum communication phase of the protocol. The only assumption about the possible postprocessing methods is that double click events are randomly assigned to single click events. Further, we consider only secure key rates based on the uncalibrated device scenario which assigns imperfections such as detection inefficiency to the eavesdropper. Our analysis relies on two preconditions for secure two-way and one-way QKD. The legitimate users need to prove that there exists no separable state (in the case of two-way QKD) or that there exists no quantum state having a symmetric extension (one-way QKD) that is compatible with the available measurements results. Both criteria have been previously applied to evaluate single-photon implementations of QKD. Here we use them to investigate a realistic source of weak coherent pulses. The resulting upper bounds can be formulated as a convex optimization problem known as a semidefinite program which can be efficiently solved. For the standard four-state QKD protocol, they are quite close to known lower bounds, thus showing that there are clear limits to the further improvement of classical postprocessing techniques in decoy-state QKD.

关键词： Quantum cryptography

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Parameterization of full-order PI observers in second-order linear systems

Parameterization of full-order PI observers in second-order ...

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27th Chinese control Conference, CCC

作者： Sheng, Wang Guo Feng, Liu Qiang, Lv Guangren, Duan Department of Control Engineering Academy of Armored Force Engineering Beijing 100072 China Center for Control Theory and Guidance Technology Harbin Institute of Technology Harbin 150001 China

ISBN: (纸本)9787900719706

Based on the parametric solutions to a generalized second-order Sylvester equation, a parametric method to solve the design of full-order PI observers is proposed in second-order linear systems. This proposed method presents the parametric expressions for the feedback gain matrices and the left eigenvector matrix of the full-order PI observers. An illustrative example shows the effectiveness and simpleness of the proposed method.

关键词： Linear systems

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Parametric approach for the normal Luenberger function observer design in second-order descriptor linear systems

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International Journal of Automation and Computing 2008年第2期5卷 125-131页

作者： Bin Zhou Guang-Ren Duan Yun-Li Wu Center for Control Theory and Guidance Technology Harbin Institute of Technology Harbin PRC National Laboratory of Space Intelligent Control Beijing Institute of Control Engineering Beijing PRC

In this paper, the normal Luenberger function observer design for second-order descriptor linear systems is considered. It is shown that the main procedure of the design is to solve a so-called second-order generalized Sylvester-observer matrix equation. Based on an explicit parametric solution to this equation, a parametric solution to the normal Luenberger function observer design problem is given. The design degrees of freedom presented by explicit parameters can be further utilized to achieve some additional design requirements.

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