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Iranian Conference on Fuzzy systems (IFSC)

作者： Davood Shaghaghi Hossein MonirVaghefi Alireza Fatehi Advanced Process Automation & Control (APAC) Research Group K. N. Toosi University of Technology Tehran Iran

control of pH neutralization process has always been one of challenging problem in process control. The method presented here to control this process is the fuzzy identification of systems using Wiener model, and then multiplying the measured signal by the inverse of the nonlinear part of model. Therefore, we can design a linear controller for this new augmented system. This strategy is implemented in a generalized predictive control. One of the advantages of this control structure is consideration of explicit constraint in control of systems which also included in proposed fuzzy predictive control. At the end, the proposed method is tested on the model of a pH neutralization process.

关键词： Predictive control Predictive models Adaptation models Fuzzy systems Cost function Nonlinear dynamical systems

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ATP production optimization in biochemical mass action models with protein turnover

ATP production optimization in biochemical mass action model...

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1st IFAC Workshop on Thermodynamic Foundations of Mathematical systems Theory, TFMST 2013

作者： Csercsik, Dávid Szederkényi, Gábor Faculty Information Technology Pázmány Péter Catholic University P.O. Box 278 H-1444 Budapest Hungary Process Control Research Group Systems and Control Laboratory Hungarian Academy of Sciences H-1518 P.O. Box 63 Budapest Hungary

ISBN: (纸本)9783902823403

We introduce a simple approach to account for the ATP consumption and production in the case of mass action models of metabolic pathways including protein turnover. Under some simplifying assumptions, the method makes it possible to characterize the optimal rate of enzyme synthesis if the substrate concentrations and other rate constants are known. Furthermore we demonstrate that the proposed approach is capable of the comparison of the efficiency of different feedback laws in dynamic environment, considering time-varying substrate concentration. Copyright © 2013 IFAC.

关键词： Rate constants

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ATP production optimization in biochemical mass action models with protein turnover

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IFAC Proceedings Volumes 2013年第14期46卷 42-47页

作者： Dávid Csercsik Gábor Szederkényi Faculty Information Technology Pázmány Peter Catholic University P.O. Box 278 H-1444 Budapest Hungary Process Control Research Group Systems and Control Laboratory Computer and Automation Research Institute Hungarian Academy of Sciences H-1518 P.O. Box 63 Budapest Hungary

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Integrated control design based on driver-in-the-loop vehicle dynamics

Integrated control design based on driver-in-the-loop vehicl...

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IEEE Annual Conference on Decision and control

作者： Balazs Nemeth Peter Gaspar Jozsef Bokor Systems and Control Laboratory Computer and Automation Research Institute Hungarian Academy of Sciences Kende u. 13-17 H-1111 Budapest Hungary Computer and Automation Research Institute Hungarian Academy of Sciences Hungary MTA-BME Control Engineering Research Group

ISBN: (纸本)9781467357159

The paper proposes the control design of a driver assistance system in which the operations of the active control systems are in cooperation with the driver's actions. The vehicle dynamics is determined by the driver while the handling of lateral dynamics in crucial situations is assisted by the control systems. Monitoring and considering the driver's activities are crucial, since the driver is incorporated in the vehicle in a complex closed-loop system and the active components only assist the driver requirements. The control systems generate a brake yaw moment and an additional steering angle when the driver alone is not able to guarantee trajectory tracking. In the control-oriented model the interactions between the driver and the vehicle are formed. The control design in which the performance specifications and priority between the active components are handled is based on the LPV method.

关键词： design control control systems Vehicle dynamics Driver Assistance systems performance specifications Active Components active control system vehicle trajectory tracking INTEGRATED SHIP control Induction loop systems

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Nonlinear analysis of dynamical complex networks 2014

Abstract and Applied Analysis

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Abstract and Applied Analysis 2014年第SI42期2014卷 1-4页

作者： Wang, Zidong Shen, Bo Dong, Hongli Hu, Jun He, Xiao Ding, Derui Department of Computer Science Brunel University Uxbridge Middlesex UB8 3PH United Kingdom Communication Systems and Networks (CSN) Research Group Faculty of Engineering King Abdulaziz University Jeddah 21589 Saudi Arabia School of Information Science and Technology Donghua University Shanghai 200051 China College of Electrical and Information Engineering Northeast Petroleum University Daqing 163318 China Research Institute of Intelligent Control and Systems Harbin Institute of Technology Harbin 150001 China Department of Applied Mathematics Harbin University of Science and Technology Harbin 150080 China Department of Automation Tsinghua University Beijing 100084 China Department of Applied Mathematics Anhui Polytechnic University Wuhu 241000 China

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Fault Detection and Isolation of a cement rotary kiln using fuzzy clustering algorithm

Fault Detection and Isolation of a cement rotary kiln using ...

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Iranian Conference on Fuzzy systems (IFSC)

作者： Nayereh Talebnezhad Alireza Fatehi Mahdi Aliyari Shoorehdeli Faculty of Graduate Studies Islamic Azad University Tehran Iran Advanced Process Automation & Control (APAC) Research Group K. N. Toosi University of Technology Tehran Iran

In this paper, Fault Detection and Isolation (FDI) is studied for the rotary kiln of Saveh White Cement Company. To do so, K-means algorithm as a crisp clustering, Fuzzy C-Means (FCM), and Gustafson-Kessel (GK) algorithms as fuzzy clustering are used. In those, for finding number of clusters, Cluster Validity Indices (CVI) are applied. Principal Component Analysis (PCA) mapped the clusters into two dimensional spaces. Fault detection and isolation performance are evaluated by three criteria namely sensitivity, specificity, and confusion matrix. The results reveal that GK fuzzy algorithm provides better performance on detection and isolation of fault in this industrial plant.

关键词： Clustering algorithms Kilns Fault detection Principal component analysis Coatings Fault diagnosis

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A novel trajectory-based active fault-tolerant control: Application to a Wind Turbine system

A novel trajectory-based active fault-tolerant control: Appl...

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IEEE Conference on control Technology and Applications (CCTA)

作者： Tushar Jain Joseph J. Yamé Dominique Sauter Research Group of Process Control and Automation Aalto University AALTO Finland Centre de Recherche en Automatique de Nancy Université de Lorraine Vandoeuvre-lés-Nancy France

In this paper, we present a real-time mechanism to accommodate faults occurring in a Wind Turbine (WT) system. The demonstrated mechanism lies under the taxonomy of Active Fault-tolerant control (FTC) systems, namely the online redesign based approach. In the proposed approach, we do not use any a priori information about the model of the turbine in real-time. In fact, we use online measurements generated by the WT. Based on the given control specifications, and the observed measurement an occurred fault is accommodated by redesigning the controller online such that the WT generates rated power even under faulty conditions. Secondly, no explicit fault diagnosis (FD) module is used in this approach. As a result, issues of model uncertainty, false alarms, etc. associated with an integrated FD and controller reconfiguration approach to FTC systems are not experienced here.

关键词： Real-time systems Mathematical model Wind turbines Fault tolerance Fault tolerant systems Actuators

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On finite-time stability and frequency spectrum analysis of the trajectory-based active fault-tolerant control

On finite-time stability and frequency spectrum analysis of ...

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Conference on control and Fault-Tolerant systems

作者： Tushar Jain Joseph J. Yame Dominique Sauter Aalto University School of Chemical Technology Research Group of Process Control and Automation Centre de Recherche en Automatique de Nancy CRAN-CNRS UMR 7039 Universite de Lorraine

ISBN: (纸本)9781479928569

The aims of this paper are two folds. First, we aim to gain some insights at the time Trajectory-based Active Fault-Tolerant control (TAFTC) using the frequency spectrum analysis. Secondly, we introduce the concept of finite-time stability (FTS) in the context of AFTC systems. Generally, in TAFTC strategy, the desired specifications are defined in terms of time-domain characteristics under the mathematical framework of behavioral system theory. In this novel fault-tolerant mechanism, we do not work in the traditional input/output setting, i.e. the frequency-domain, at the outset. Instead, we use the system time-trajectories. As an extension, we report some results within this TAFTC strategy showing what frequency-domain properties are actually satisfied by the closed loop. The TAFTC scheme is based on the trajectories generated by the system, where no a priori information regarding the plant is known at a run-time. We use time-limited measurements of the system instead of acquiring a mathematical model of the plant and we deal. Consequently, the theory of FTS renders a more practical insight to study the stability of the TAFTC scheme than is provided by the classical stability theory.

关键词： Spectrum Analysis Active fault-tolerant control time stability Fourier transform spectrometry Payment systems systems Theory stability theory MODEL PLANTS Runtime plants

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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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Realizing system poles identification on the unit disc based on Laguerre representations and hyperbolic metrics

Realizing system poles identification on the unit disc based...

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Mediterranean Conference on control and automation (MED)

作者： Alexandros Soumelidis József Bokor Ferenc Schipp Systems and Control Laboratory Computer and Automation Research Institute Hungarian Academy of Sciences Budapest Hungary MTA-BME Control Engineering Research Group Budapest University of Technology and Economics Budapest Hungary Department of Numerical Analysis Faculty of Informatics Eotvos Lorand University Budapest Hungary

ISBN: (纸本)9781479909964

In a series of paper the authors proposed a new frequency-domain approach to identify poles in discrete-time linear systems. The discrete rational transfer function is represented in a rational Laguerre-basis, where the basis elements are expressed by powers of the Blaschke-function. This function can be interpreted as a congruence transform on the Poincaré unit disc model of the hyperbolic geometry. The identification of a pole is given as a hyperbolic transform of the limit of a quotient-sequence formed from the Laguerre-Fourier coefficients. In this paper the opportunities of reliably computing the poles are analyzed, and some algorithms are proposed for practical use.

关键词： Convergence Estimation Transforms Transfer functions Measurement Geometry Hafnium

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