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Experiment design for Pauli channel estimation

IFAC Proceedings Volumes 2011年第1期44卷 4344-4349页

作者： Gábor Balló Katalin M. Hangos Department of Electrical Engineering and Information Systems University of Pannonia Egyetem u. 10 H-8200 Veszprém Hungary Process Control Research Group Systems and Control Laboratory Computer and Automation Research Institute Hungarian Academy of Sciences P.O. Box 63 H-1518 Budapest Hungary

Abstract Experiment design for quantum channel parameter estimation includes the design of the quantum input to the channel and the observables to be applied on the resulting quantum output system, called the experiment configuration. An experiment design procedure based on maximizing the Fisher information of the qubit Pauli channel parameters is presented in this paper. It can be shown that the Fisher information is a convex function in both the input and the experiment configuration parameters. This leads to an optimal setting that includes pure input states and projective measurements directed towards the channel directions. An iterative method of estimating the channel directions is also proposed.

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Output tracking of Markovian jumping systems via error feedback regulation

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IFAC Proceedings Volumes 2011年第1期44卷 2424-2429页

作者： Shuping He Zhengtao Ding Fei Liu Key Laboratory of Advanced Process Control for Light Industry (Ministry of Education) Institute of Automation Jiangnan University Wuxi 214122 P. R.China Control Systems Centre School of Electrical and Electronic Engineering University of Manchester Manchester M60 1QD UK

Abstract This paper studies the output tracking problem of continuous-time Markovian jumping systems (MJSs) via error feedback scheme. With the extension of output regulation to MJSs, sufficient conditions are obtained based on stochastic Lyapunov-Krasovskii functional. The resulting closed-loop system is guaranteed to be stochastically stable and the output tracking is achieved almost asymptotically. Moreover, the output regulation error almost asymptotically converges to zero. In order to ensure the relaxed solutions of the regulation equations, we described the problem as a semi-definite optimization approach via disciplined convex programming. Simulation result is also given to illustrate the performance and effectiveness of the proposed approach.

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Two-Stage Method and Application for Molten Iron Scheduling Problem between Iron-Making Plants and Steel-Making Plants

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IFAC Proceedings Volumes 2011年第1期44卷 9476-9481页

作者： Hui Huang Tianyou Chai Xiaochuan Luo Binglin Zheng Hong Wang State Key Laboratory of Integrated Automation for Process Industry (Northeastern University) Shenyang China 110819 (Tel: +86-24-83678332) National Metallurgical Automation Engineering Technology Research Center Northeastern University Shenyang China 110819 Control Systems Centre School of Electrical and Electronic Engineering the University of Manchester P O Box 88Manchester M60 1QD UK

Abstract In this paper, a two-stage method is proposed to solve the molten iron scheduling problem (MISP). Firstly, a 0-1 mixed-integer nonlinear programming model is established for special type of molten iron scheduling problem (STMISP). A method to solve mathematical model of STMISP is presented, which include assigning machine strategy of STMISP and determining mathematical model of eliminating machine conflicts. Secondly, on the basis of results of STMISP, a heuristic algorithm based on the rule of first come first serve (FCFS) principle is established to solve normal type of molten iron scheduling problem (NTMISP). The molten iron scheduling system with the two-stage method has been successfully applied to Shanghai Baosteel Company to realize quickly optimal molten iron scheduling. Application results show that the two-stage method is both effective and feasible.

关键词： Molten iron scheduling problem Two-stage method Hybrid flow shop Mixed-integer nonlinear programming model Heuristic algorithm

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Dynamic Optimal Scheduling Method and Its Application for Converter Fault in Steelmaking and Continuous Casting Production process

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IFAC Proceedings Volumes 2011年第1期44卷 9506-9511页

作者： Shengping Yu Tianyou Chai Hong Wang Xinfu Pang Binglin Zheng State Key Laboratory of Integrated Automation for Process Industry (Northeastern University) Shenyang China 110004 (Tel: +86-24-83689665-8013) National Metallurgical Automation Engineering Technology Research Center Northeastern University Shenyang China 110004 Control Systems Centre School of Electrical and Electronic Engineering the University of Manchester P O Box 88 Manchester M60 1QD UK

Abstract In steelmaking and continuous casting (SMCC) production process, converter fault can lead to unexpected changes to the pre-specified converter-continuous caster production mode so that the original scheduling plan becomes unrealizable. In this paper, the dynamic scheduling problem in response to converter fault is firstly analyzed. This is then followed by the establishment of a novel multi-objective nonlinear programming model (MONPM) by introducing the production mode parameter α, production schedule parameter β and χ. The proposed method considers changes in production mode, production schedule of charge, the interval characteristics of processing time. In specific, a two-stage dynamic optimal scheduling method is proposed including the production path planning of charges (PPP) and the production time scheduling (PTS). As a result, a dynamic optimal scheduling software system (DOSSS) is developed and is successfully applied to the scheduling of the largest iron and steel company (BaoSteel) in China. The real-time application shows that the proposed method can efficiently reduce scheduling time, significantly increase the outputs of converters and dramatically shorten the redundant waiting time for molten steel.

关键词： steelmaking and continuous casting dynamic optimization production mode nonlinear programming scheduling system

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Active fault tolerant control of an electro-hydraulic servo axis with a duplex-valve-system

Active fault tolerant control of an electro-hydraulic servo ...

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5th IFAC Symposium on Mechatronic systems, MECHATRONICS 2010

作者： Beck, Mark Schwung, Andreas Muenchhof, Marco Isermann, Rolf TU Darmstadt Institute of Automatic Control Laboratory for Control Systems and Process Automation 64283 Darmstadt Germany TU Darmstadt Institute of Automatic Control Laboratory for Control Theory and Robotics 64283 Darmstadt Germany

ISBN: (纸本)9783902661760

In this paper fault detection, fault diagnosis and active fault tolerant control of an electro-hydraulic servo-axis with a duplex-valve-system are described. The fault detection is based on parity equations. The semi-physical models allow the detection of even small faults in the hydraulic system. The fault diagnosis used on the testbed is based on fuzzy-logic. In order to tolerate a failed hydraulic proportional valve, a duplex-valve-system built up with standard direct-driven proportional valves is applied. The fault management module allows the supervision of the hydraulic servo axis and decides on reconfiguration and fault accomodation of the control-loop. The Internal Model control (IMC)-tracking control structure used for reconfiguration allows bumpless transfer between controllers. Experimental results show the industrial applicability of the approach. © 2010 IFAC.

关键词： Fault detection

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Identifiability of a Hodgkin-Huxley type ion channel under voltage step measurement conditions

Identifiability of a Hodgkin-Huxley type ion channel under v...

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9th International Symposium on Dynamics and control of process systems, DYCOPS 2010

作者： Csercsik, D. Szederkényi, Gábor Hangos, Katalin M. Process Control Research Group Systems and Control Laboratory Computer and Automation Research Institute Hungarian Academy of Sciences P.O. Box 63 H-1518 Budapest Hungary

ISBN: (纸本)9783902661692

In this paper, we analyze the identifiability properties of a Hodgkin-Huxley (HH) type voltage dependent ion channel model under voltage clamp circumstances. The elimination of the differential variables is performed, and the identifiability of various parameters is analyzed using the differential algebra approach and the algorithm based on the Taylor series expansion of the output. It is shown that the model is structurally non-identifiable using certain commonly applied parametrizations, and hidden dependences between physical parameters are unravelled. Using the results of the identifiability analysis, physically meaningful examples are shown when the model parameters are different but the system outputs are identical. © 2009 IFAC.

关键词： control applications in biological processes Modeling and identification

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Active fault tolerant control of an electro-hydraulic servo axis with a duplex-valve-system

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IFAC Proceedings Volumes 2010年第18期43卷 660-668页

作者： Beck Mark Schwung Andreas Muenchhof Marco Isermann Rolf TU Darmstadt Institute of Automatic Control Laboratory for Control Systems and Process automation 64283 Darmstadt Germany (Tel: +49-6151-162314) TU Darmstadt Institute of Automatic Control Laboratory for Control Theory and Robotics 64283 Darmstadt Germany (Tel: +49-6151-166283) TU Darmstadt Institute of Automatic Control Laboratory for Control Systems and Process automation 64283 Darmstadt Germany (Tel: +49-6151-163114) TU Darmstadt Institute of Automatic Control Laboratory for Control Systems and Process automation 64283 Darmstadt Germany (Tel: +49-6151-162114)

关键词： Fault Detection Fault Diagnosis Fault Tolerance Fault Accomodation Electro-hydraulic Servo Axis Duplex-valve-system Active Fault Tolerant control Reconfiguration Bumpless-Transfer

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Optimal control over unreliable networks with uncertain loss rates

Optimal control over unreliable networks with uncertain loss...

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作者： Kögel, Markus J. Blind, Rainer Allgöwer, Frank Institute for Systems Theory and Automatic Control University of Stuttgart Stuttgart Germany Laboratory for Systems Theory and Automatic Control Institute for Automation Engineering Otto-von-Guericke University Magdeburg Magdeburg Germany Design and Optimization in Chemical and Biochemical Process Engineering International Max Planck Research School for Analysis Magdeburg Germany

ISBN: (纸本)9781424474264

In this work, we consider an optimal control problem for Networked control systems (NCS), where the loop is closed via an unreliable network. In order to inform the controller about the fates of the control packets, the actuator sends acknowledgements to the controller. In this work, different types of acknowledgements are considered. Since all packets are send over a network, we consequently assume, that all packets can get lost, i.e. the measurement packets, the control packets as well as the acknowledgement packets. The loss of these packets is modeled by independent and identically distributed (iid) Bernoulli processes. Finally, we assume that the parameters of these loss processes are not known exactly. Using this setup, we derive bounds for the uncertainty in the loss rates. Moreover, we present an algorithm to design a sub-optimal controller which can tolerate a given amount of network uncertainties. © 2010 AACC.

关键词： Networked control systems

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Identifiability of a Hodgkin-Huxley type ion channel under voltage step measurement conditions

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IFAC Proceedings Volumes 2010年第5期43卷 332-337页

作者： D. Csercsik Gábor Szederkényi Katalin M. Hangos Process Control Research Group Systems and Control Laboratory Computer and Automation Research Institute Hungarian Academy of Sciences P.O. Box 63 H-1518 Budapest Hungary

关键词： Modeling and Identification control Applications in Biological processes

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Computing reaction kinetic realizations of positive nonlinear systems using mixed integer programming

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IFAC Proceedings Volumes 2010年第14期43卷 981-986页

作者： Gábor Szederkényi Process Control Research Group Systems and Control Laboratory Computer and Automation Research Institute (MTA-SZTAKI) Hungarian Academy of Sciences P.O. Box 63 H-1518 Budapest Hungary

The reaction kinetic realizations of nonnegative polynomial systems are studied in this paper. It is briefly reviewed that a wide class of positive systems can be written in or simply transformed to kinetic form. Based on the structure of kinetic realizations, valuable information can be obtained about the dynamical properties of the investigated systems using the results of chemical reaction network theory (CRNT). Since the realizations of a given system can have many different structures, mixed integer linear programming is used to generate the ones with required properties (i.e. the minimal/maximal number of reactions or complexes).

关键词： nonlinear systems positive systems chemical reaction networks mixed integer optimization

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