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Lightweight Battery Electric Vehicle for educational purposes

2013 4th International Conference on Mechanical and Aerospace engineering, ICMAE 2013

作者： Jandura, Pavel Bukvic, Martin The Institute of Mechatronics and Computer Engineering Department of Vehicles and Engines Technical University of Liberec Studentska 2 461 17 Liberec 1 Czech Republic

ISBN: (纸本)9783037858332

Introducing the concept of Battery Electric Vehicle developed at the technical university of liberec, intended for test and educational purposes. It is a lightweight four wheeled vehicle with an open frame primarily designed for ease of access to all major vehicle components. For the main structural elements of the vehicle frame was chosen modular system of extruded aluminum profiles. The vehicle power unit consists of BLDC motor paired with multi-speed manual transmission. Traction battery with regard for the electrical safety consists of 17s LFP cells only, resulting in a nominal voltage of 55 VDC (63 VDC fully charged). Total amount of energy stored in the traction battery is 10.8 kWh. © (2013) Trans Tech Publications, Switzerland.

关键词： Traction motors

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Planar acoustic metamaterials with the active control of acoustic impedance using a piezoelectric composite actuator

Planar acoustic metamaterials with the active control of aco...

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2013 Joint IEEE International Symposium on Applications of Ferroelectric and Workshop on Piezoresponse Force Microscopy, ISAF/PFM 2013

作者： Nováková, Kateřina Psota, Pavel Doleček, Roman Lédl, Vít Mokrý, Pavel Václavik, Jan Márton, Pavel Černík, Martin Sobotecká 1660 CZ-51101 Turnov Czech Republic Institute of Mechatronics and Computer Engineering Technical University of Liberec Studentská 2 Liberec I CZ-46117 Czech Republic

In the Paper, there are presented methods for a precise active control of the acoustic impedance of large planar structures, e.g glass plates or shells, by means of distributed flexible piezoelectric composite actuators which are connected to passive or active electronic shunt circuits. Design of tunable acoustic metamaterials is realized using Finite Element Method simulations and their acoustic properties are evaluated using acoustic transmission loss measurements. Static and dynamic displacements of the metamaterials produced by electric voltage are measured using Digital Holographic Interferometry. We believe that deep understanding of presented systems should result in future applications that improve the quality of everyday life. © 2013 IEEE.

关键词： Acoustic impedance

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Optoelectronic detector for a glass cullet sorter

Optoelectronic detector for a glass cullet sorter

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Annual Conference of the IEEE Industrial Electronics Society

作者： Ivan Dolezal Institute of Mechatronics and Computer Engineering Technical University of Liberec

ISBN: (纸本)9781479902255

A sorter of impurities, or colors, in glass cullet is a key device in waste-glass recycling plants. The arrangement of an optical sensor for a detector in the sorter, based on pairs of infrared LED and photodiode, is examined. The issues of tolerance of the optoelectronic components and their temperature dependence are resolved. The design of key electronic circuits of the detector is outlined. The main functions of the microcontroller firmware (multiplexing, ranging, impurity detection, filtering, detection of soiling, event timing), their solution and communication protocols are described. PC control software is briefly mentioned. The detectors work successfully in a Czech recycling plant.

关键词： Glass cullet Detector Optical sensor Infrared LED Photodiode Microcontroller Firmware Firmware Photodiodes Microcontrollers detector Sorter optical sensors Infrared radiation CULLET electro-optical devices recycling plant infrared Light Emitting Diode SMIM10L2A gene Light emitting diodes

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Design of Wall-plug Efficiency Optimized Semi-active Piezoelectric Shunt Damping Systems

Design of Wall-plug Efficiency Optimized Semi-active Piezoel...

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IEEE International Symposium on Applications of Ferroelectrics

作者： Jan Vaclavik Pavel Mokry Pavel Marton Institute of Mechatronics and Computer Engineering Technical University of Liberec

ISBN: (纸本)9781467359955

Analysis of the wall-plug efficiency, i.e. the ratio of reflected and absorbed acoustic power over the total electric input power, of semi-active vibration control devices based on the principle of Piezoelectric Shunt Damping is presented. The vibration suppression element in the considered vibration control device consists of a piezoelectric actuator, which is connected to the active synthetic impedance shunt circuit that emulates a negative capacitance. Two types of power amplifiers can be used in the implementation of the synthetic impedance: linear (class B, AB) and switching (class D). Strengths and weaknesses of the two aforementioned implementations of the synthetic impedance shunt circuit in the semi-active vibration control device are analyzed. The key factor in the analysis is the wall-plug efficiency. Principles that can enhance the wall-plug efficiency of the device are discussed.

关键词： Wall-plug efficiency Semi-active vibration control Piezoelectric actuator Piezoelectric shunt damping Negative capacitor

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Continuously switched linearized models of the nonlinear once-through boiler model

Continuously switched linearized models of the nonlinear onc...

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International Conference on Process Control

作者： J. Opalka T. Nahlovsky The Institute of Mechatronics and Computer Engineering Technical University of Liberec

ISBN: (纸本)9781479909261

This paper deals with a substitution of the nonlinear once-through boiler model. The substitution is based on a set of the linearized models which are continuously switched according to the value of the boiler power level. The aim is to obtain a model which sufficiently accurately substitutes the original nonlinear model and whose simulation is faster for more flexible advanced control algorithm testing. In the paper two approaches of linearization are mentioned and compared.

关键词： Once-through boiler Linearization Nonlinear model

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ESICM LIVES 2016: part one Milan, Italy. 1-5 October 2016 Abstracts

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INTENSIVE CARE MEDICINE EXPERIMENTAL 2016年第SUPPL 1期4卷 1-1页

作者： [Anonymous] Academic Medical Center University of Amsterdam Amsterdam Netherlands UMCU Utrecht Netherlands Autonomous University of Barcelona Barcelona Spain Hospital São Francisco Xavier Lisbon Portugal CHU Henri Mondor Medical ICU Créteil France Université de Paris Est-Créteil Groupe de Recherche Clinique CARMAS Créteil France Hôpital Tenon APHP Medical and Surgical ICU Paris France Université Paris Diderot Sorbonne Paris Cité UMR 1153 Paris France Interdepartmental Division of Critical Care University of Toronto Toronto Canada University Health Network University of Toronto Critical Care Medicine Toronto Canada University of Milan - Bicocca Health Sciences School of Medicine and Surgery Monza Italy St Michael’s Hospital University of Toronto Anesthesia Toronto Canada CHU d’Angers Medical ICU Angers France Interdepartmental Division of Critical Care University of Toronto Saint Michael’s Hospital and Keenan Research Centre Toronto Canada University of Birmingham Institute for Inflammation and Ageing Birmingham UK University of Sheffield Mathematics and Statistics Help Centre Sheffield UK Heart of England NHS Foundation Trust Intensive Care Medicine Birmingham UK Department of Surgery University Hospitals Birmingham NHS Trust Birmingham UK University Hospitals Birmingham NHS Trust Anaesthesia and Critical Care Medicine Birmingham UK Queen’s University of Belfast Wellcome-Wolfson Institute for Experimental Medicine Belfast UK Royal Victoria Hospital Intensive Care Medicine Belfast UK University of Warwick Warwick Clinical Trials Unit Coventry UK University of Bari ‘Aldo Moro’ Bari Italy Hospital Israelita Albert Einstein São Paulo Brazil Mayo Clinic Jacksonville USA Mahidol University Faculty of Tropical Medicine Bangkok Thailand University Medical Center Utrecht Intensive Care Utrecht Netherlands University Medical Center Utrecht Julius Center for Health Sciences and Primary Care Utrecht Netherlands Academic Medical Center University of Amste

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Wet electrospinning of polycaprolactone

Wet electrospinning of polycaprolactone

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International Symposium on Fibers Interfacing the World 2013

作者： Košt'áková, Eva Seps, Michal Pokorný, Pavel Lukáš, David Department of Nonwovens and Nanofibrous Materials Faculty of Textile Engineering Technical University of Liberec Czech Republic Institute of Novel Technologies and Applied Informatics Faculty of Mechatronics Informatics and Interdisciplinary Studies Technical University of Liberec Czech Republic

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Educational company and e-learning

Educational company and e-learning

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International Conference e-Learning 2013, Part of the IADIS Multi Conference on computer Science and Information Systems 2013, MCCSIS 2013

作者： Manlig, František Šlaichová, Eva Pelantová, Věra Šimúnová, Michala Koblasa, František VavruŠka, Jan Technical University of Liberec Faculty of Mechanical Engineering Department of Manufacturing Systems Studentská 2 461 17 Liberec Czech Republic Technical University of Liberec Faculty of Economics Department of Business Administration Studentská 2 461 17 Liberec Czech Republic Technical University of Liberec Faculty of Mechatronics Informatics and Interdisciplinary Studies Institute of New Technologies and Applied Informatics Studentská 2 461 17 Liberec Czech Republic Slovak University of Technology in Bratislava Faculty of Materials Science and Technology in Trnava Department of Production Systems Rázusova 2 917 24 Trnava Slovakia

ISBN: (纸本)9789728939885

This article deals with nowadays urgent issue. It tries to find a way how to achieve as highest probability of current students employment as possible, especially in the age of business crises. It comes from actual industry practice requirements on hiring employees. There is briefly, considering limited range of article, described innovative education concept Educational company, which implies elements of problem based learning with focus on e-learning application and acquirement of soft skills by students. This article shows structure of mentioned concept. There are mentioned differences between traditional and developed education concept. A contribution describes current experiences of all participants, concept benefits and also problems, which this concept faces. There are presented further steps connected with concept development. The experience of concept versatility are very good and show it's high potential. A concept is motivating not only for students but also for the teachers, which are acquiring the new abilities and are getting new knowledge. Mostly it is going about more effective form of education with clear results not only in the form of created products but mainly in good student versatility in practice.

关键词： Students

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Planar acoustic metamaterials with the active control of acoustic impedance using a piezoelectric composite actuator

Planar acoustic metamaterials with the active control of aco...

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IEEE International Symposium on Applications of Ferroelectrics (ISAF)

作者： Kateřina Nováková Pavel Psota Roman Doleček Vít Lédl Pavel Mokrý Jan Václavík Pavel Márton Martin Černík Regional Centre for Special Optics and Optoelectronic Systems (TOPTEC) Turnov Czech Republic Technicka univerzita v Liberci Liberec Liberec Region CZ Institute of Mechatronics and Computer Engineering Technical University of Liberec Liberec I Czech Republic

In the paper, there are presented methods for a precise active control of the acoustic impedance of large planar structures, e.g glass plates or shells, by means of distributed flexible piezoelectric composite actuators which are connected to passive or active electronic shunt circuits. Design of tunable acoustic metamaterials is realized using Finite Element Method simulations and their acoustic properties are evaluated using acoustic transmission loss measurements. Static and dynamic displacements of the metamaterials produced by electric voltage are measured using Digital Holographic Interferometry. We believe that deep understanding of presented systems should result in future applications that improve the quality of everyday life.

关键词： Capacitance Instruments Acoustic measurements

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Laboratory gantry robot: Design and control

Laboratory gantry robot: Design and control

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2012 13th International Carpathian Control Conference, ICCC 2012

作者： Černohorský, Josef Lindr, David Institute of Mechatronics and Computer Engineering Technical University of Liberec Liberec Czech Republic

ISBN: (纸本)9781457718687

This paper presents practical approach to design and control laboratory gantry robot for specimen manipulation. The paper contains the definition of speed and position range, continue on basic gantry solution with friction linear bearing and drive selection. The next chapter is about controlling system with closed loop stepper motor control. The other chapter describes HMI visualization and touchscreen control interface. In the conclusion there are characteristic of final gantry robot discussed. © 2012 IEEE.

关键词： Stepping motors

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