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IEEE Conference on Vehicle Power and Propulsion (VPPC)

作者： Lucas Nieto Degliuomini David Zumoffen Marta Basualdo Diego Feroldi Jordi Riera Computer Aided for Process Engineering Group (CAPE-GIAIP) CIFASIS-CONICET-UNR Rosario Argentina FRRo Universidad Tecnológica Nacional Rosario Argentina Institut de Robòtica i Informàtica Industrial (CSIC-UPC) Barcelona Spain

The transient behavior of a Polymer Electrolyte Membrane Fuel Cell System (PEMFCS) under an efficient Adaptive Predictive Control with Robust Filter (APCWRF) is analyzed. This control scheme is tested to evaluate its performance when sudden changes in the load occur. It is produced by the demands of the electric motor of a hybrid vehicle, powered by a PEMFC and a supercapacitor bank to fulfil Standard Driving Cycles. The objective of the proposed advanced strategy is to control the oxygen excess ratio in the cathode to improve the system efficiency and to ensure a safe operation for the PEM. Several results through a simulation environment are presented. They are useful for showing the potentiality of the APCWRF for the proposed exigent scenarios.

关键词： Fuel cells Vehicles Cathodes Biological system modeling Adaptation model Finite impulse response filter Biomembranes

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On-line qualitative model-based diagnosis of technological systems using colored petri nets 28

On-line qualitative model-based diagnosis of technological s...

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28th European Simulation and Modelling Conference, ESM 2014

作者： Leitold, Adrien Gerzson, Miklós Pózna, Anna I. Hangos, Katalin M. Department of Mathematics University of Pannonia P.O.B. 158 VeszprémH-8201 Hungary Dept. of Electrical Engineering and Information System University of Pannonia P.O.B. 158 VeszprémH-8201 Hungary Process Control Research Group Computer and Automation Research Institute P.O.B. 63 BudapestH-1518 Hungary

ISBN: (纸本)9789077381861

A novel on-line diagnosis method is proposed in this paper that uses a qualitative dynamic model of the system and its colored Petri nets model. The model contains both the normal and the possible faulty operational modes of the system. The deviation between the normal and faulty modes is characterized based on P-HAZID tables. The actual system state can be searched on the occurrence graph constructed in advance. Starting from this node the possible consequences and root causes can be determined on-line with traversing on the graph. The proposed method is illustrated on simple case studies.

关键词： Petri nets

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Faults and fault propagation modeling in manufacturing systems based on colored petri nets 28

Faults and fault propagation modeling in manufacturing syste...

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28th European Simulation and Modelling Conference, ESM 2014

作者： Gerzson, Miklós Leitold, Adrien Hangos, Katalin M. Dept. of Electrical Engineering and Information System University of Pannonia P.O.B. 158 VeszprémH-8201 Hungary Department of Mathematics University of Pannonia P.O.B. 158 VeszprémH-8201 Hungary Process Control Research Group Computer and Automation Research Institute P.O.B. 63 BudapestH-1518 Hungary

ISBN: (纸本)9789077381861

A novel fault integration method is proposed in this paper for manufacturing system models given in the form of timed colored Petri nets. The faults are assumed to have a stochastic nature and are represented in the form of transitions firing in stochastic way with known fault probabilities in the system model. A novel fault effect propagation method was also developed, that can be used to compute the probabilities of the possible faulty and non-faulty intermediate and final states of the system using the probabilities of faults and the occurrence graph. The faultless and fault containing models were implemented in CPNTools both for non-timed and timed cases. A software module was also developed for the proposed probabilistic fault propagation analysis. The proposed methods and tools were demonstrated using a simple case study.

关键词： Manufacture

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Analysis of IIR Filters by Interval Response

Analysis of IIR Filters by Interval Response

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2020 Moscow Workshop on Electronic and Networking Technologies, MWENT 2020

作者： Borges, Vinicius Nepomuceno, Erivelton G. Tutueva, Aleksandra V. Karimov, Artur I. Duque, Carlos Karimov, Timur I. Federal University of São João Del-Rei Electrical Engineering Department São João del-Rei Brazil Petersburg Electrotechnical University Computer Aided Design Department Saint-Petersburg Russia Petersburg Electrotechnical University Youth Research Institute Saint-Petesburg Russia Federal University of Juiz de Fora Power Electronics and Automation Group Juiz de For a Brazil

ISBN: (纸本)9781728125718

The classical theory of signal processing assumes that the designed IIR filters are continuous and have infinitely accurate coefficients. However, when developing filters for real-world digital signal processing tasks, it is necessary to take into account the finite precision of the coefficients representation, especially considering the fixed-point arithmetic. In this paper, we propose a new approach, which we call the interval size approach, making it easy to evaluate the actual digital filter response for various fixed-point arithmetic parameters. We provide Illustrative examples to demonstrate the frequency response bounds evolution as an order, cutoff frequency, and signal frequency are varying. We show that the interval size can be used as a well-suited accuracy factor of a digital filter. © 2020 IEEE.

关键词： Fixed point arithmetic

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Distributed delay model of the McKeithan’s network

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IFAC-PapersOnLine 2019年第7期52卷 33-38页

作者： György Lipták 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 Department of Electrical Engineering and Information Systems University of Pannonia Veszprém Hungary

In this paper CRNs containing linear reaction chains with multiple joint complexes were considered in order to obtain an equivalent reduced order delayed CRN model with distributed time delays. For this purpose, our earlier method (Lipták and Hangos (2018)) for decomposing the chains of linear reactions with multiple joint complexes was used together with the "linear chain trick". An analytical expression for the kernel function of the distributed delay was also derived from the reaction rate coefficients of the linear reaction chains. Our approach was demonstrated using the example of the well known McKeithan’s network model of kinetic proofreading.

关键词： process control Delay Chemical Reaction Networks

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Intelligent Adaptive Control of Mode-Switch processes

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IFAC Proceedings Volumes 1991年第1期24卷 145-150页

作者： R.A. Hilhorst J. van Amerongen P. Löhnberg H.J.A.F. Tulleken Control Systems and Computer Engineering Group Dept of Electrical Engineering University of Twente and Mechatronics Research Centre Twente P. O. Box 217 7500 AE Enschede The Netherlands Process Systems Group Dept of Mathematics & Systems Engineering Koninklijke/Shell-Laboratorium (Shell Research B.V.) P.O. Box 3003 1003 AA Amsterdam The Netherlands

The intelligence of controllers has increased over the decades. However, the number of applications of adaptive controllers is still restricted, due to practical limits of the implemented continuous adaptation. For processes which operate only in a limited number of modes (so called mode-switch processes), constant adaptation is not needed or desired. In this paper an intelligent extension of adaptive control will be presented, in which process behaviour can be stored in a memory, retrieved from it and evaluated for each mode of operation. This intelligent memory concept leads to an adaptive control structure which, after a learning phase, quickly adjusts the controller parameters based on retrieval of old information, without the need to relearn every time. This approach has been tested on a simulation model of an assembly robot, but it is directly applicable to many processes in the (petro)chemical industry.

关键词： Adaptive control Supervisory control Automatic tuning Mode-switch processes Bumpless transfer

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Real-Time Level Plant Control Using Improved BELBIC

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IFAC Proceedings Volumes 2008年第2期41卷 4631-4635页

作者： M. Masoudinejad R. Khorsandi A. Fatehi C. Lucas S. Fakhimi Derakhshan M.R. Jamali Advanced Process Automation & Control (APAC) Research Group Faculty of Electrical Engineering K. N. Toosi University of Technology Tehran Iran Center of Excellence for Control and Intelligent Processing Electrical and Computer engineering Department University of Tehran Iran

Brain emotional learning based intelligent controller (BELBIC) is based on computational model of limbic system in the mammalian brain. In recent years, this model was applied in many linear and nonlinear control applications. Previous studies show that this controller has fast response, simple implementation and robustness with respect to disturbances. It is also possible to define emotional signal based on control application objectives. But in the previous studies, internal instability of this controller was not considered and control task were done in limited time period. In this article mathematical description of BELBIC is investigated and improved to avoid internal instability. Simulation and implementation of improved model was done on level plant. The obtained results showed that instability of model has been solved in the new model without loss of performance by using Integral Anti Windup (IAW).

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Simulation Success Stories: Business process Reengineering

Simulation Success Stories: Business Process Reengineering

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Simulation Winter Conference

作者： K.L. Hunt E.F. Madigan G.A. Hansen R.A. Phelps Lmagine That Inc. San Jose CA USA Computer Aided Process Improvement Ponte Vedra Beach FL USA Human Factors Engineering NCR Retail Systems Group Duluth GA USA Simulation Dynamics Inc. Maryville TN USA

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Pheromone based transportation scheduling system for the multi-vehicle routing problem

Pheromone based transportation scheduling system for the mul...

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IEEE International Conference on Systems, Man and Cybernetics

作者： H. Murao K. Tohmata M. Konishi S. Kitamura Computer and Systems Engineering Kobe University Kobe Japan Outsourcing Business Group Fujitsu Laboratories Limited Japan Process Technology Research Laboratory Kobe Steel Company Limited Japan

We propose a novel and fast method, named "pheromone based transportation scheduling system" (PBTS), to obtain feasible solution for the multi-vehicle routing problem. It is a method inspired by a communication mechanism of living organisms such as ants and bees which communicate with each other and organize the cluster using pheromones. In PBTS, each transportation agent autonomously and independently searches its own route as the partial solution of the vehicle routing problem, where the imitated pheromone is effectively used to dissolve the duplications of customers between routes of agents. computer simulations show that the PBTS can generate good solutions comparably to the one generated by a genetic algorithm in shorter time.

关键词： Transportation Routing Vehicles Personal communication networks Cost function processor scheduling Genetic algorithms Systems engineering and theory Outsourcing Laboratories

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The linearity of optical tomography: Sensor model and experimental verification

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Sensors and Transducers 2011年第9期132卷 40-46页

作者： Mohd. Muji, Siti Zarina Abdul Rahim, Ruzairi Fazalul Rahiman, Mohd Hafiz Zakaria, Zulkarnay Mohamad, Elmy Johana Karis, Mohd Safirin Department of Computer Engineering Faculty of Electrical and Electronic Engineering Universiti Tun Hussein Onn Malaysia 86400 Parit Raja Batu Pahat Johor Malaysia Process Tomography Research Group Control and Instrumentation Engineering Department Faculty of Electrical Engineering Universiti Teknologi Malaysia 81310 Skudai Johor Bahru Malaysia Tomography Imaging Research Group School of Mechatronic Engineering Universiti Malaysia Perlis 02600 Arau Perlis Malaysia

The aim of this paper is to show the linearization of optical sensor. Linearity of the sensor response is a must in optical tomography application, which affects the tomogram result. Two types of testing are used namely, testing using voltage parameter and testing with time unit parameter. For the former, the testing is by measuring the voltage when the obstacle is placed between transmitter and receiver. The obstacle diameters are between 0.5 until 3 mm. The latter is also the same testing but the obstacle is bigger than the former which is 59.24 mm and the testing purpose is to measure the time unit spend for the ball when it cut the area of sensing circuit. Both results show a linear relation that proves the optical sensors is suitable for process tomography application. © 2011 IFSA.

关键词： Optical tomography

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