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12th IFAC Workshop on Time Delay systems, TDS 2015

作者： Sipahi, Rifat Kucera, Vladimir Vyhlidal, Tomas Department of Mechanical and Industrial Engineering Northeastern University BostonMA02115 United States Department of Instrumentation and Control Engineering Faculty of Mechanical Engineering Czech Technical University in Prague Technicka 4 Prague 6166 07 Czech Republic

Vibrations being induced on a main structure due to fluctuating force disturbances are suppressed in this study using Delayed Resonator (DR) (N. Olgac, M. Hosek, 1997), with the added challenges that the corresponding system characteristic equation is of neutral type with two independent delays, where one delay must be tuned as per DR and the other is uncertain due to remote communication delays. In this study, a type of Rekasisus transformation with frequency sweeping approach is adopted along with D-subdivision theorem for the stability analysis of the LTI vibration control problem with respect to uncertain delay and controller gains, while keeping the tuned delay fixed, similar to that in (Cooke and van den Driessche, 1986a). Simulations, which validate the results, are also presented. © 2015, IFAC (International Federation of Automatic control) Hosting by Elsevier Ltd. All rights reserved.

关键词： Vibration analysis

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Robust decentralized control of large-scale systems via H∞theory and using descriptor system representation

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International Journal of systems Science 2016年第12-13期34卷 705-715页

作者： Labibi, B. Lohmann, B. Sedigh, A. Khaki Maralani, P. Jabedar Control Department Electrical Engineering Faculty K. N. Toosi University of Technology Seyyed Khandan Bridge Shariati Street 16314 Iran Dept. of System Dynamics and Control University of Bremen Otto-Hahn-Allee/NW1 28359 Bremen Germany Electrical and Computer Eng. Dept. Faculty of Engineering University of Tehran North Karegar Street Building No. 2 Tehran Iran

In this paper, a method for design of linear decentralized robust controllers for a class of uncertain large-scale systems in general form is presented. For a given large-scale system, an equivalent descriptor system in input-output decentralized form is defined. Using this representation, closed-loop diagonal dominance sufficient conditions are derived. It is shown that by appropriately minimizing the weighted sensitivity function of each isolated subsystem, these conditions are achieved. Solving the appropriately defined H∞local problem for each isolated uncertain subsystem, the interactions between the subsystems are reduced, and the overall stability and robust performance are achieved in spite of uncertainties. The designs are illustrated by a practical example.

关键词： control system synthesis

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Magnitude optimum design of PID control loop with delay 12

Magnitude optimum design of PID control loop with delay

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12th IFAC Workshop on Time Delay systems, TDS 2015

作者： Fiser, Jaromír Zítek, Pavel Vyhlídal, Tomáš Department of Instrumentation and Control Engineering Faculty of Mechanical Engineering Czech Technical University in Prague Technická Str. 4 CZ 166 07 Czech Republic Czech Technical University in Prague Czech Republic

The paper deals with a magnitude-optimum based synthesis of PID control loops with respect to the disturbance rejection. To obtain as general as possible formulation of the control synthesis the dimensional analysis is applied resulting in the use of similarity numbers of the so-called swingability and laggardness of the time delay plant. Just this approach lias made it possible to work with the transcendental form of the optimized magnitude function. From the meromorphic description of the control loop with delay the PID setting then can be evaluated by means of Levenberg-Marquardt iteration method. The obtained PID settings are systematically compared from the viewpoint of the dominant modes of the control loop responses. © 2015, IFAC (International Federation of Automatic control) Hosting by Elsevier Ltd. All rights reserved.

关键词： Disturbance rejection

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Support of biomass boiler control design by modeling

Support of biomass boiler control design by modeling

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International Carpathian control Conference (ICCC)

作者： Viktor Placek Bohumil Sulc Department of Instrumentation and Control Engineering Faculty of Mechanical Engineering Prague Czech Republic

Most of small-scale combustion devices firing biomass use control algorithms designed on the basis of an empirical experience. Very often, the on-off strategy is applied for heat output control linked with repetitive starts of the burning process which may be linked with some undesirable effects especially as far as emissions and efficiency are concerned. There are more reasons why such control solutions are preferred in practice, but one of the most evident is the difficulty of modeling biomass combustion processes which are strongly dependent on the fuel properties and its variability. Appraisal of both model based and model free methods in the controller design was the object of investigations we carried out on an experimental small-scale water heating boiler firing wood chips of various quality. Results from testing suitability of a model intended for both simulation and control design are reported in this paper completed with some other pieces of knowledge from ecological operation of biomass boilers. Usage of the model will be demonstrated on the model-based control algorithm.

关键词： Zirconium Biological system modeling Boilers Kalman filters Analytical models

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A comparative study of the DC and AC model for thin film sensors for the detection of gases

A comparative study of the DC and AC model for thin film sen...

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International Conference on (ISCO) Intelligent systems and control

作者： Dipali Ramdasi Rohini Mudhalwadkar Department of Instrumentation and Control Faculty at Cummins College of Engineering for Women Pune INDIA Department of Instrumentation and Control Govt. College of Engineering Pune INDIA

When a gas is passed over a thin film sensor, its electrical properties like resistance/conductance, capacitance change due to diffusion of the gas. These changes can be studied by simulating the sensor response on giving a step change in the gas concentration. It is sometimes difficult to select an appropriate model for simulating the sensor response. This paper presents simulation of two models viz. the DC model or the Device Conductance Model and the AC model for three input gases, Methanol, Acetone and Ethyl Acetate. For the same step input, the percentage change in response for both models for change in conductance is observed. The DC model exhibits a higher percentage change in conductance than the AC model.

关键词： Gold Wireless sensor networks

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Android OS parameters measurement on S3C6410

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IFAC-PapersOnLine 2015年第4期48卷 141-146页

作者： J. Arm S. Misik Z. Bradac V. Kaczmarczyk Department of Control and Instrumentation Faculty of Electrical Engineering and Communication Brno University of Technology Brno Czech Republic

Nowadays Android becomes more and more popular operating system. Mostly, it is installed on portable devices with support of communications and providing friendly user environment. This article focuses on overview this system from the point of view of programmer and showing other options which this OS can be used in. In this paper, it is also shown how to measure some system parameters from the point of view of real-time capabilities such a switching context time, interrupt latency time and time of work with memory. Thanks these parameters, the system capabilities can be imagined on target platform. It is discussed about soft and hard real-time capabilities of OS Android.

关键词： Android operating system Tiny6410 S3C6410 switching context time interrupt latency

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Embedded Telemetry system with data presentation using HTTP and data logging

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IFAC-PapersOnLine 2015年第4期48卷 101-106页

作者： S. Misik Z. Bradac J. Arm L. Stastny Department of Control and Instrumentation Faculty of Electrical Engineering and Communication Brno University of Technology Brno Czech Republic

Traditional way of communication on the Internet is human (or human-made content) to another human. Another frequent alternative is device-made content to human or another device, which is often referred to as The Internet of Things. This paper focuses on the whole design of embedded telemetry device based on microcontroller system, which uses Hypertext Transfer Protocol for remote data presentation. Proposed solution also allows for data logging and processing. For added reliability, solution proposed in this paper is equipped with uninterrupted power supply module. This solution can also be used as main platform for developing Internet of Things devices.

关键词： Telemetry Embedded systems Data transmission Data logging Communication protocols Microprocessor chips Operating systems (computers) Data acquisition Ethernet networks

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Evaluation of a 500-N deadweight force standard machine at NIMT

Evaluation of a 500-N deadweight force standard machine at N...

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The Society of Instrument and control Engineers Annual Conference 2015

作者： Kittipong Chaemthet Ake Chaisawadi Department of Control System and Instrumentation Engineering King Mongkut's University of Technology Thonburi

A 500-N deadweight force standard machine(DWM) has been developed for calibrating force proving instrument of small force ranges at National Institute of Metrology, Thailand(NIMT). The DWM is able to generate calibration forces ranging from 2 N to 500 N with the relative expanded uncertainty of 5×10-5. This machine can be divided into six calibration ranges, which are 10 N, 20 N, 50 N, 100 N, 200 N and 500 N. To verify performance of the machine, this paper shows the evaluation of relative uncertainty in the range of 50 N to 500 N. The force transducer was calibrated by the machine according to ISO376:2011[1]. The calibration result of force transducers has shown repeatability and reproducibility. The relative deviation of the calibration errors were less than 5×10-5 at the 50 % to 100 % of the capacity of force transducer.

关键词： Deadweight force standard machine,DWM,uncertainty,force-proving instrument,ISO 376:2011

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26th Annual Computational Neuroscience Meeting (CNS*2017): Part 3 Antwerp, Belgium. 15-20 July 2017 Abstracts

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BMC NEUROSCIENCE 2017年第SUPPL 1期18卷 95-176页

作者： [Anonymous] Department of Neuroscience Yale University New Haven CT 06520 USA Department Physiology & Pharmacology SUNY Downstate Brooklyn NY 11203 USA NYU School of Engineering 6 MetroTech Center Brooklyn NY 11201 USA Departament de Matemàtica Aplicada Universitat Politècnica de Catalunya Barcelona 08028 Spain Institut de Neurobiologie de la Méditerrannée (INMED) INSERM UMR901 Aix-Marseille Univ Marseille France Center of Neural Science New York University New York NY USA Aix-Marseille Univ INSERM INS Inst Neurosci Syst Marseille France Laboratoire de Physique Théorique et Modélisation CNRS UMR 8089 Université de Cergy-Pontoise 95300 Cergy-Pontoise Cedex France Department of Mathematics and Computer Science ENSAT Abdelmalek Essaadi’s University Tangier Morocco Laboratory of Natural Computation Department of Information and Electrical Engineering and Applied Mathematics University of Salerno 84084 Fisciano SA Italy Department of Medicine University of Salerno 84083 Lancusi SA Italy Dipartimento di Fisica Università degli Studi Aldo Moro Bari and INFN Sezione Di Bari Italy Data Analysis Department Ghent University Ghent Belgium Coma Science Group University of Liège Liège Belgium Cruces Hospital and Ikerbasque Research Center Bilbao Spain BIOtech Department of Industrial Engineering University of Trento and IRCS-PAT FBK 38010 Trento Italy Department of Data Analysis Ghent University Ghent 9000 Belgium The Wellcome Trust Centre for Neuroimaging University College London London WC1N 3BG UK Department of Electronic Engineering NED University of Engineering and Technology Karachi Pakistan Blue Brain Project École Polytechnique Fédérale de Lausanne Lausanne Switzerland Departement of Mathematics Swansea University Swansea Wales UK Laboratory for Topology and Neuroscience at the Brain Mind Institute École polytechnique fédérale de Lausanne Lausanne Switzerland Institute of Mathematics University of Aberdeen Aberdeen Scotland UK Department of Integrativ

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A multi-agent approach for leather processing monitoring and quality control

UPB Scientific Bulletin, Series C: Electrical Engineering an...

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UPB Scientific Bulletin, Series C: Electrical engineering and Computer Science 2015年第3 3期77 77卷 17-30页

作者： Guţʇ, Sergiu-Adrian Dumitrache, Ioan Dept. of Automatic Control and System Engineering University POLITEHNICA of Bucharest Romania Automatic Control and System Engineering Department Automatic Control and Computers Faculty University POLITEHNICA of Bucharest Romania

Currently there is no reliable mechanism available to allow continuous monitoring of all process conditions and leather characteristics inside the closed reactors during leather processing, so no real control. Conditions inside the reactors can only be monitored by stopping the reactor to sample the solution and leather. The automation systems for leather industry rely on stale centralised architecture, a critical point of failure imposing operational bottleneck. To improve the efficiency of leather manufacturing process the paper proposes a multi-agent system (MAS) architecture that is fault tolerant, and that provides high flexibility and agility needed by the turbulent environment of leather industry.

关键词： Multi agent systems

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