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American control Conference

作者： Henrik Niemann Jakob Stoustrup Niels Kjolstad Poulsen Dept. of Electrical Engineering Automation and Control Tech. University of Denmark DK-2800 Kgs. Lyngby Denmark Dept. of Electronic Systems Automation & Control Aalborg University DK-9220 Aalborg Denmark Dept. of Applied Mathematics and Computer Science Tech. University of Denmark DK-2800 Kgs. Lyngby Denmark

ISBN: (纸本)9781479932757

This paper is focusing on active fault detection (AFD) for parametric faults in closed-loop systems. This auxiliary input applied for the fault detection will also disturb the external output and consequently reduce the performance of the controller. Therefore, only small auxiliary inputs are used with the result that the detection and isolation time can be long. In this paper it will be shown, that this problem can be handled by using a modification of the feedback controller. By applying the YJBK-parameterization (after Youla, Jabr, Bongiorno and Kucera) for the controller, it is possible to modify the feedback controller with a minor effect on the external output in the fault free case. Further, in the faulty case, the signature of the auxiliary input can be optimized. This is obtained by using a band-pass filter for the YJBK parameter that is only effective in a small frequency range where the frequency for the auxiliary input is selected. This gives that it is possible to apply an auxiliary input with a reduced amplitude. An example is included to show the results.

关键词： Active fault detection parametric faults feedback controllers YJBK parameterization controller modification

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26th Annual Computational Neuroscience Meeting (CNS*2017) of the Organization for Computational Neuroscience Antwerp, Belgium, July 15-20, 2017

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BMC NEUROSCIENCE 2017年第SUPPL 1期18卷 59-59页

作者： [Anonymous] Indiana University Purdue University Indianapolis Indianapolis IN 46032 USA Stark Neurosciences Research Institute Indiana University School of Medicine Indianapolis IN 46032 USA Department of Mathematics East Carolina University Greenville NC 27858 USA Jülich Supercomputing Centre Forschungszentrum Jülich 52425 Jülich Germany Future Systems Swiss National Supercomputing Centre 8092 Zurich Switzerland User Engagement and Support Swiss National Supercomputing Centre 6900 Lugano Switzerland Institut de Neurosciences des Systèmes Aix Marseille Univ 13005 Marseille France Simulation Lab Neuroscience Forschungszentrum Jülich Jülich Germany Department of Experimental Psychology Ghent University 9000 Ghent Belgium Donders Center for Cognitive Neuroimaging Radboud University 6525HR Nijmegen The Netherlands Department of Electrical Computer and Energy Engineering University of Colorado Boulder CO 80309 USA Department of Neurosurgery Johns Hopkins School of Medicine Baltimore MD 21287 USA Department of Neurology Johns Hopkins School of Medicine Baltimore MD 21287 USA Department of Otolaryngology Johns Hopkins School of Medicine Baltimore MD 21287 USA INSERM U968 Paris France Sorbonne Universités UPMC University Paris 06 UMR_S 968 Institut de la Vision Paris France CNRS UMR_7210 Paris France Department of Computer Architecture and Technology University of Granada (CITIC) Granada Spain Sorbonne Universités UPMC Univ Paris 06 INSERM CNRS Institut de la Vision Paris France Department of Adaptive Machine Systems Osaka University Osaka Japan Department of Computer Science University of Cergy-Pontoise Cergy-Pontoise France Department of Physics and Astronomy College of Charleston Charleston SC 29424 USA School of Physics Faculty of Science University of Sydney Sydney NSW 2006 Australia Center of Excellence for Integrative Brain Function Australian Research Council Sydney Australia Max Planck Institute for Human Cognitive and Brain Sciences Saxony Lei

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Active Fault Isolation in MIMO systems

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IFAC Proceedings Volumes 2014年第3期47卷 8012-8017页

作者： Henrik Niemann Niels Kjølstad Poulsen Department of Electrical Engineering Automation and Control Technical University of Denmark Building 326 DK-2800 Kgs. Lyngby Denmark Dept. of Applied Mathematics and Computer Science Section for Dynamical Systems Technical University of Denmark DK-2800 Kgs. Lyngby Denmark

Active fault isolation of parametric faults in closed-loop MIMO systems are considered in this paper. The fault isolation consists of two steps. The first step is group-wise fault isolation. Here, a group of faults is isolated from other possible faults in the system. The group-wise fault isolation is based directly on the input/output signals applied for the fault detection. It is guaranteed that the fault group includes the fault that had occurred in the system. The second step is individual fault isolation in the fault group. Both types of isolation are obtained by applying dedicated auxiliary inputs and the associated residual outputs.

关键词： Active fault isolation MIMO systems YJBK parameterization

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LPV Model Identification for Motion control systems

LPV Model Identification for Motion Control Systems

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American control Conference

作者： Nanhu Chen John T. Wen Corning Inc. Center for Automation Technologies & Systems and Electrical Computer & Systems Eng. Dept.

ISBN: (纸本)9781479901777

Motion systems for optical and manufacturing applications have demanding performance requirement in terms of speed and precision. Linear system description alone is often inadequate to meet the design and performance assessment requirements. Linear parameter varying (LPV) formulation is a promising approach to address system nonlinearity by using a family of linear time invariant (LTI) systems parameterized by the operating point. It is attractive as many aspects of the linear system theory, such as systems identification, parameter estimation, and feedback control, are still applicable, at least locally around each operating point. This paper addresses the issue of constructing a multi-input/multi-output (MIMO) LPV characterization based on local data around multiple operating points. The goal is to capture the large motion behavior by suitably interpolating the local LTI models. The identification of the LPV model parameters is posed as a nonlinear least square problem. An efficient iterative relaxation algorithm consisting of alternating least square problems is proposed for the solution. The proposed approach is applied to the simulation and experiment of a two-degree-of-freedom fast steering mirror (FSM). The LPV response matches well with the nonlinear system response for both small and large motion ranges, demonstrating the efficacy of the approach.

关键词： Workstations Motion control System Functional systems Theory system response model identification LTI feedback control Least squares method

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Lyapunov function-based control of active power filters to reduce the adverse effects of harmonics on induction motors

Lyapunov function-based control of active power filters to r...

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2013 3rd International Conference on Electric Power and Energy Conversion systems, EPECS 2013

作者： Aliskan, Ibrahim Gulez, Kayhan Tuna, Gurkan Kizilkaya, M. Özgür Dept. of Electrical and Electronics Eng. Bulent Ecevit University Zonguldak Turkey Dept. of Control and Automation Eng. Yildiz Technical University Istanbul Turkey Dept. of Computer Programming Trakya University Edirne Turkey Aeronautics and Space Technologies Institute Turkish Air Force Academy Istanbul Turkey

ISBN: (纸本)9781479906888

In this study, a pulse width modulator controller inverter type active power filter is used for reducing the adverse effects of harmonics. Induction motor control system used in this study comprises a proportional-integral controller, a direct torque control algorithm, and an inverter module. Nonlinear controller algorithm proposed in this study enables setting different parameters in the controller system. Our experimental results show that more planar electromagnetic torque can be obtained by using the proposed controller-based filter than a classical controlled-based filter. © 2013 IEEE.

关键词： Lyapunov functions

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Lyapunov function-based control of active power filters to reduce the adverse effects of harmonics on induction motors

Lyapunov function-based control of active power filters to r...

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International Conference on Electric Power and Energy Conversion systems (EPECS)

作者： Ibrahim Aliskan Kayhan Gulez Gurkan Tuna M. Özgür Kizilkaya Dept. of Electrical and Electronics Eng. Bulent Ecevit University Zonguldak Turkey Dept. of Control and Automation Eng. Yildiz Technical University Istanbul Turkey Dept. of Computer Programming Trakya University Edirne Turkey Aeronautics and Space Technologies Institute Turkish Air Force Academy Istanbul Turkey

关键词： Programming Linear systems MATLAB

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Clock Synchronization for Wireless Sensor Network with Communication Delay

Clock Synchronization for Wireless Sensor Network with Commu...

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American control Conference

作者： Emanuele Garone Andrea Gasparri Francesco Lamonaca Faculty of Applied Science Control and Systems Analysis Department Université Libre de Bruxelles 1050 Brussels Belgium Department of Computer Science and Automation University of "Roma Tre" Via della Vasca Navale 79 00146 Rome Italy Dept. of Electronic Systems and Computer Science University of Calabria Ponte Pietro Bucci 87040 Rende (CS)

ISBN: (纸本)9781479901777

In this work, the clock synchronization problem for wireless sensor networks is addressed. In our scenario, we consider a wireless sensor network where nodes are equipped with a local clock hardware and communicate in order to achieve a common sense of time. This work introduces a novel synchronization algorithm able to ensure a good level of synchronization even in the presence of random bounded communication delays. A theoretical analysis of the robustness of the proposed algorithm is proposed along with simulations to corroborate the theoretical finding.

关键词： Communication Delay clock synchronization theoretical finding

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Computing dynamically equivalent realizations of biochemical reaction networks with mass conservation

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AIP Conference Proceedings 2013年第1期1558卷 2356-2359页

作者： János Rudan Gábor Szederkényi Katalin M. Hangos Faculty of Information Technology Pázmány Péter Catholic University Práter u. 50/a H-1083 Budapest Hungary Faculty of Information Technology Pázmány Péter Catholic University Práter u. 50/a H-1083 Budapest Hungary and Process Control Research Group Computer and Automation Research Institute Hungarian Academy of Sciences. Hungary Process Control Research Group Computer and Automation Research Institute Hungarian Academy of Sciences. Kende u. 13-17 H-1111 Budapest Hungary and Dept. of Electrical Engineering and Information Systems Faculty of Information Technology Univer Hungary

An algorithm for the computation of mass conservative dynamically equivalent chemical reaction network structures is proposed in this paper. The algorithm is formulated in an optimization-based framework as a mixed-in...

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Model-free adaptive PID controllers applied to the Benchmark PID'12

Model-free adaptive PID controllers applied to the Benchmark...

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2nd IFAC Conference on Advances in PID control, PID 2012

作者： Silveira, Antonio S. Coelho, Antonio A.R. Gomes, Francisco J. Research Group in Applied Control Technologies Dept. of Automation and Systems Federal University of Santa Catarina PO Box 476 88040-900 Florianópolis SC Brazil

ISBN: (纸本)9783902823182

Many tuning strategies for PID control algorithms have been proposed in the literature depending on modeling choice from heuristics, physical laws and/or experimental essays. In this paper, the properties of three model-free adaptive PID control design conceptions, known as direct PID control, are investigated and implemented. The recursive least squares estimator is used to identify the PID controller gains without the knowledge of the plant mathematical model. The tuning strategies of the direct PID controller are applied to the boiler control system proposed by Fernando Morilla (UNED, Spain) as a benchmark problem for the 2012 IFAC Conference on Advances in PID controllers.

关键词： Three term control systems

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New results on stochastic stability of discrete-time unscented Kalman filter

New results on stochastic stability of discrete-time unscent...

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2012 7th IEEE Conference on Industrial Electronics and Applications, ICIEA 2012

作者： Dymirkovsky, Gyorgyi FEEIT School Automation and Systems Eng. Dept. SS Cyril and Methodius University MK-1000 Skopje Macedonia Departments of Computer Eng. and of Control Eng. Dogus University of Istanbul Acibadem TR-34722 Istanbul Turkey

ISBN: (纸本)9781457721175

Performance of the Unscented Kalman Filter, UKF, for nonlinear stochastic discrete-time systems is investigated. It is proved that under certain conditions, the estimation error of the UKF remains bounded. Furthermore, it is shown that the design of noise covariance matrix plays an important role in improving the stability of the UKF algorithm. It is further shown the estimation error remains bounded the nonlinear observability rank condition is satisfied. These results are verified by numerical simulations for a relevant illustrative example. © 2012 IEEE.

关键词： Bandpass filters

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