Keresés

Keresési eredmények

• Pneumatikus megfogóval szerelt többtengelyes manipulátor irányítása PLC -vel

  1-5.

  Nagy Ádám

  Tóth János

  Husi Géza

  Megtekintések száma:

  177

  Projekt feladat során a többtengelyes manipulátor működése lett megvizsgálva. A feladat megoldása Bosch PLC (Programmable Logic Control) HMI (Human Machine Interface) felhasználásával, ST (Structured Text) programozási nyelv segítségével. A manipulátor egy gyártási folyamatban történő alkatrész mozgást valósít meg.

• Bond Graph Modeling, Simulation, and Control of Permanent Magnet Linear Synchronous Motor: PMLSM Motor Based EVs Applications

  1-9

  Babangida Aminu

  Husi Géza

  Szemes Péter

  Megtekintések száma:

  211

  The high-performance feature of the Permanent Magnet Linear Synchronous Motor (PMLSM) makes it a reliable and valuable motor for use in the automotive industry, especially for electric vehicle (EVs) applications. This research proposes a bond graph approach in modeling the PMLSM as a multi-domain dynamical system.

  However, A time-based simulation was performed using 20-sim software to simulate the dynamical behavior of the motor. An equivalent model of the motor was first obtained and then modeled and simulated using 20-sim software. The model of the PMLSM drive system was modeled separately and incorporated with PMLSM Motor equivalent model to form a global model.

  Moreover, the motor drive system response was studied based on the sensor resolutions and the inverter switching frequency. The block diagram and the transfer function methods validated the bond graph model obtained. Two classical PIs such as continuous and discrete were implemented on the motor response to control the velocity of the motor.

• Development of an IoT Based Smart Meteorological Station & Horticultural Irrigation System’s Controller Using a Raspberry Pi Linux Server

  1-6.

  Füleki Zsombor

  Erdei Timotei István

  Szántó Attila

  Sziki Gusztáv Áron

  Husi Géza

  Megtekintések száma:

  142

  In my current project an IoT based device has been developed, the main function of which is to allow the control of its own flexible meteorological station and irrigation system. Besides the control computer, there are meteorological sensors attached, based on which we control our agricultural irrigation apparatus.

• Advanced Management and Monitoring Functions at the TMA 550AL Manufacturing Centre, used for ATR

  1-4.

  Ovidiu Moldovan

  Ioan Moga

  Husi Géza

  Megtekintések száma:

  102

  This paper amiss to make an overview of the management and monitoring functions implemented at the TMA 550 AL flexible manufacturing system, functions that are used to implement the automatic tool readjustment function.

• Odometry and Teleoperation Application using NI Robotics

  1-5.

  Ionuț - Flaviu Birouaș

  Nilgesz Arnold

  Cornea Mihai

  Megtekintések száma:

  105

  This document is intended to present the progress in developing a remotely operated mobile robot that can feedback information related to its position. The equipment used for the robot frame, communication and feedback technology are used are just one alternative of achieving the teleoperation and feedback tasks, and are not to be taken as the standard or the only way of achieving the objectives. The application was programmed using LabVIEW for the remote operation of the robot, for obtaining video streaming we have used two alternatives one being a standard IP camera and the other using a USB WebCam connected to a Raspberry Pi. Positioning feedback was determined from the information provided by the two motor encoders mounted on the DC motors.

• Grafikus felület készítése épületek energiafogyasztásának szimulációs vizsgálatához

  1-7.

  Tyukodi Zsolt

  Sarvajcz-Bánóczy Emese

  Husi Géza

  Megtekintések száma:

  113

  Ezen kutatás keretein belül egy lakóépület energetikai szimulációja történt EnergyPlus programmal. Az épületre több változat is készíthető egy SciLab alkalmazással, mellyel az EPISCOPE program keretein belül készített Lakóépület tipológia Magyarországon kiadványban javasolt felújítási módosítások szerint változtathatjuk az épületszerkezetet. Ezen kívül további alkalmazások készültek a szimulációs eredmények megjelenítésére és energetikai tanúsítványhoz szükséges adatok számítására.

• Bond-Graph model based stepper motor output characteristics simulation implemented in LabVIEW environment

  1-6.

  Molnár Zsolt

  Husi Géza

  Megtekintések száma:

  324

  In the industry, simulations are of great importance. They enable measurements to be made in different conditions about a virtual device, which are highly comparable to measurements made in a real life scenarios. Because of their wide range of usage in lower power drive systems, where precision and simplicity is a must, the subject of study is a permanent magnet stepper motor. For precise positioning purposes, it is essential to know the positioning behaviour of these devices. The model construction process involved an intermediate step, which consisted of creating the Bond-Graph of the motor based on pre-defined models available in the literature in this field. In the next step, the Bond-Graph model was converted to a block diagram of the motor. This permitted the direct implementation of the motor model in LabVIEW visual programming environment. The preliminary steps allows us to check and confirm the functionality and correctness of the model. This article covers in detail the model conversion and implementation steps of the simulation. At the end, the functionality of the simulation was tested.

• Practical Implementation of Second Generation Wavelet Transformation on 2D Images by Transformation Matrixes

  1-6.

  Piros Sandor J.

  Korondi Peter

  Megtekintések száma:

  85

  To perform second generation wavelet transformation in digital signal processing is a common operation. Most obvious way to carry out this task is by program cycle management. Computational software usually executes direct matrix algebraic operations much faster, compared to cycles. Avoiding organizing cycles, can increase the processing speed by magnitudes. This paper introduces transformation matrixes to execute the key steps of wavelet transformation: filtering and downsampling. By the employment of the described transformational matrixes, wavelet transformation and filtering of two dimensional images or discrete datasets could be easier and faster.

• Opportunities of Computer-aided Building Energy Consumption Design

  1-5.

  Sarvajcz-Bánóczy Emese

  Szemes Péter Tamás

  Megtekintések száma:

  77

  Nowadays a significant part of energy is consumed in buildings. In order to reduce the energy consumption different retrofit technologies are applied. As every building and every energy consumer is different the same modernization technic can not be used for all buildings. This paper shows a computer aided opportunity which is able to simulate different modernization technic for the same building in order to the best opportunity can be selected. The paper highlights the advantages of computeraided building design and the opportunities of optimization techniques in a new under design building case. This paper also contains examples in order to introduce this modelling method.

• The Effect of Air-fuel Equivalence Ratio Change on the Vibration Components of an Internal-combustion Engine

  1-6.

  Manhertz Gabor

  Antal Akos

  Megtekintések száma:

  98

  Nowadays the automotive industry and the motor development are one of the most dynamically developing industries. One solution to the diagnostic systems providing reliability is the acoustic and vibration measurement system, which can indicate and predict a variety of malfunctions after signal processing. The purpose of this experiment is to analyze the effect of the air-fuel equivalence ratio on the vibration components of an internal-combustion engine (ICE) which is a part of the in question measurement system. In the focus of the experiments are the analysis of the time signal, its spectra, and the power content of the signal. With the increment of the air-fuel ratio the amplitudes of the measured signal and its spectral amplitudes showed a downward trend as the RMS values. In addition, certain frequency components disappeared during the actuation of the ICE with an electromotor, so the characterization of the combustion could be come to the front.

• Creating a Linux Based Home Cloud & Media Service by using Raspberry Pi 3

  1-6.

  Vadnai Bence

  Shaw Edwin

  Erdei Timotei István

  Megtekintések száma:

  133

  Nowadays the microcontrollers are getting cheaper and easier to configure. In my project I am going to show you the best ways to share the data at home between your devices. My goal was to create a home cloud service with some extras only using some old laptop HDDs and a Raspberry PI.

• Szerelt nyomtatott áramköri lemez optikai ellenőrzése National Instruments szoftverek használatával

  1-6.

  Korsoveczki Gyula

  Husi Géza

  Megtekintések száma:

  218

  Jelen cikk témáját szerelt nyomtatott áramköri lemez National Instruments szoftverekkel megvalósított, optikai úton történő ellenőrzése képezi. Az ellenőrzés során 7 különböző típusú ellenállás, 3 különböző típusú integrált áramkör, vonalkód, valamint szöveg detektálása valósult meg. Az vizsgálati eredmények Microsoft Excel alapú vizsgálati riportba kerültek exportálásra. Az optikai ellenőrzés National Instruments Vision Development Module és LabVIEW fejlesztőkörnyezet használatával valósult meg.

• The Trivial Servomotor and Servo Control System Expressions

  1-4

  Szász Csaba

  Megtekintések száma:

  193

  In electrical engineering the technical terms “servomotor” and “servo control system” are used since long decades ago. They are generally accepted and wide-range used denominations worldwide in scientific papers, books, advertisements and other publications. In other words, the above two terms become somewhat self-understanding incontestable parts of our technical language. However, this paper emphasizes the idea to discuss the exact and real meaning of these two terms. This because often it happens that in scientific publications there is no made clear difference between the terms “motor” or “servomotor”, respectively “control system” or “servo control system” and that may be a real source of misunderstandings or confusions. For this reason, in first step a thorough overview of the available international scientific literature is presented in the paper in order to evidence the context and conditions in that are used the discussed scientific expressions. Then a careful analysis from technical point of view is unfolded to bring arguments to strengthen the endeavor that a clear difference should be made between the terms “motor” and “servomotor”, respectively “control system” and “servo control system” in demanding technical discussions, as well as in scientific publications. Not at least, there is proposed an original definition of the two discussed terms, reflecting a point of view that may contribute to better understanding and utilization in scientific debates and publications.

• Preliminary Design of a Climate Controlled Environmental Test and Measurement

  1-7

  Lázár Bence

  Szabolcsi Róbert

  Menyhárt József

  Megtekintések száma:

  81

  Climate chambers play an important role in the design and testing process. Several different chambers have been built over the years, specialising in different areas. It means there is a wide choice on the market and as a consequence, parameters necessary for us limit when choosing the ideal test chamber. Our instruments might be subjected to several environmental effects which require a lot of time and effort to be tested. An example is the Mars rover. NASA's Perseverance Mars rover was equipped with 2 pieces of  Li-ion battery packs and the old solar charging was replaced by RTG (Radioisotope Thermoelectric Generator) thus a generator feeds the electricity consumers of the rover. Temperature on the surface of Mars varies from -150 C° to 20 C°. In addition, there are huge storms at regular interval lasting for month sometimes. These storms cause great difficulties because, on the one hand, the main power source on older types was the solar panels, and storms can cover them with Martian dust, limiting or eliminating their power supply. On the other hand, large sandstorms can completely cover the rover, and once the sandstorm is over, the Mars rover has to free itself from its trap. In addition, there were many other factors that engineers had to consider in the design. It is a well-known fact that we are not able to consider all the possible environmental conditions in design, and it is also known that some measurements may be inaccurate, so the prototypes produced have to be tested on the ground. The ground tests must ensure that the operating conditions on Mars are maintained. Special test chambers have been developed for this purpose. [1] The aim of the authors is to design and build a prototype of a climate chamber of their own design. An important component of the chamber is a measurement data acquisition system, which allows the collection of measured data and their preliminary processing.

• Time Domain Analysis and Spectral Methods for Determining Rotational Speed of Rotary Machines

  1-8.

  Gárdonyi Gábor

  Samu Krisztián

  Megtekintések száma:

  123

  Accurate estimation of rotational speed of rotary machines has usually high priority in technical applications. This information should be calculated for many diagnostic algorithms, control or regulation processes. Incorrectly estimated values could occur serious disturbances in the operation of machines. Additional instrumentation often may be obstructed due to lack of space, but the construct of the machine may also affect the accuracy of measurement. In such cases, vibration diagnostic tools can be the disposal of difficulty. Mounting an acceleration sensor onto the outer surface of the measured device is not a major challenge. In most cases using time, frequency or quefrency domain analysis, it is possible to estimate the rotational speed of the analysed rotary machine. The calculated spectra and cepstra can help to determine the rotational speed more easily and more accurate than the time domain methods. This paper presents the comparison of these methods in terms of their usability and rotational speed estimation accuracy. A possible error of traditional optical measurement due to misalignment and benefits of the other methods are illustrated in this article via measured data series of a Brushless DC (BLDC) motor driven system.

• Augmented Reality in Error Troubleshooting Inside Flexible Manufacturing Cells

  1-3.

  Csokmai Lehel

  Tarca Radu

  Ovidiu Moldovan

  Megtekintések száma:

  86

  A new type of software framework for error troubleshooting in flexible manufacturing systems using a frame marker device. Our framework system meant to resolve the failures originated from the human-machine interface and to generate self-training from previous experience.

• Electric Vehicle Modeling and Simulation of Volkswagen Crafter with 2.0 TDI CR Diesel Engine: VW Vehicle 2020 Based PMSM Propulsion

  1-6

  Babangida Aminu

  Szemes Péter Tamás

  Megtekintések száma:

  430

  The Internal Combustion Engine (ICE) used by conventional vehicles is one of the major causes of environmental global warming and air pollutions. However, the emission of toxic gases is harmful to the living. Electric propulsion has been developed in modern electric vehicles to replace the ICE.

  The research is aimed at using both Simulink and SIMSCAPE toolboxes in a MATLAB to model the vehicle. This research proposes a Volkswagen (VW) crafter with a 2.0 diesel TDI CR engine, manufactured in 2020. An electric power train, a rear-wheel driven, based on Permanent Magnet Synchronous Motor (PMSM) was designed to replace the front-wheel driven, diesel engine of the VW conventional vehicle.

  In this research, a Nissan leaf battery of a nominal voltage of 360 V, 24 kWh capacity was modeled to serve as the energy source of the overall system. A New European Drive Cycle (NEDC) was used in this research. Another test input such as a ramp was also used to test the vehicle under different road conditions. However, a Proportional Integral (PI) controller was developed to control both the speed of the vehicle and that of the synchronous motor. Different drive cycles were used to test the vehicle. The vehicle demonstrated good tracking capability with each type of test. In addition, this research found out that there is approximately about 19% more benefit in terms of fuel economy of electric vehicles than the conventional vehicles.

• Development of a Parking Assistance for Model Vehicle

  1-4.

  Cservenák Ákos

  Megtekintések száma:

  115

  A model vehicle has been developed further in order to perform automatic parking. Ultrasonic sensors and STM32 F4 Discovery microcontroller have been mounted. The driving assistant system can find the parking place then parallel parking is performed. The backward motion of the vehicle is carried out along two circular paths, which is followed by corrections of the position and orientation.

• Trajectory Control of Designed Experimental Mobile Robot

  1-5.

  Yildirim Şahin

  Eren Berkay

  Megtekintések száma:

  320

  Due to advancing technology; nowadays mobile robot applications in hospitals have been increased. For that reason, it is very important and necessary to analyze the trajectory of such helping robotic system. However; there are many types of mobile robots have been utilized in hospital applications such as helping nurses. In this simulation study; a designed and controlled mobile robot was controlled by using standard feedback controllers. On the other hand, the robot was also tested with disturbances of ground surface roughness. The simulation results were improved that standard PID controller has superior performance to overcome surface roughness of the robot trajectory.

• Measurement of the Effect of Chromaticity and Intensity on Colour Representation Parameters of a CRT Display

  1-4.

  Wenzel Klára

  Urbin Ágnes

  Megtekintések száma:

  96

  The aim of the measurement detailed in this paper was to measure the just-noticable stimuli of the participating subjects. The stimuli were defined by chromaticity and intensity as the main parameters of the mathematical model. The results show correlance between intensity and the just-noticable stimuli, as described in the Weber-Frechner Law but a contradiction was shown after the analysis in the function of chromaticity. This contradiction can be explained by the difference between the sensitivity of the three cones of the eye.

• Forearm-attachable EMG-based Wireless Controller

  1-4.

  Bánfi Tamás

  Aradi Petra

  Megtekintések száma:

  124

  This paper presents the development process starting from a simple electronic module for amplification of EMG signals. During development the tasks to be solved were extended towards the creation of an EMG-base controller that eventually can be connected to a PC. Among the main goals were the simplicity and low cost of production. There are similar devices commercially available, but the main focus was on the whole process of design, testing, fabrication and the exploration of application areas. It was important to use medical recommendations. The device matches the suggestion of SENIAM, except for the resolution of A/D conversion, which is permissible due to the fact that it was not designed for medical purposes. The final version is capable of detecting and amplifying EMG signals, with the appropriate filtering and digitizing procedures for further processing. With the development of wireless communication capabilities, the device which can be attached to the forearm can be used as a USB HID device with a PC. A number of additional applications are also discussed, pointing out the fact that this piece of technology offers a wide range of possibilities.

• Linear Identification of a Servo-pneumatic System

  1-8.

  Széll Károly

  Czmerk András

  Megtekintések száma:

  88

  The identification of a nonlinear system is quite challenging for engineers. This paper presents the automatic identification of a servo-pneumatic cylinder based on a framework implemented in MATLAB. The introduced application shortens the process length of identification and gives areference model, important for controlling.

• Last Generation Mechatronics: a Two-level Platform-based Reconfigurable Technology Approach

  1-7.

  Szász Csaba

  Megtekintések száma:

  124

  As is well known mechatronic systems currently being designed and developed are often difficult multidisciplinary undertakings. Based on the intrinsic coupling of different implementation technologies, efficient design of mechatronic systems is of primordial importance for development of next generation industrial products. This paper is focused to current and future technological trends aimed to improve the design and implementation processes of mechatronic systems in an increasingly harsh industrial environment. Special attention is dedicated to introduction of the two-level platform-based reconfigurable technology approach. This strategy efficiently combines major advantages of both the hardware and software platform-based development trends in modern mecatronic systems. In order to support the unfolded theoretical arguments a last generation and versatile mechatronic system development is presented and discussed in the paper. The mentioned trends can be used as rough orientation for future mechatronic systems research and implementation activities.

• Aero Graphene in Modern Aircraft & UAV

  1-5

  Abdullah Masuk

  Husi Géza

  Megtekintések száma:

  665

  The paper focuses on aero graphene and carbon nanotube (CNT) aerogel which will use in aircraft such as battery, engine, pitot probe, wings, fuselage, plane front glass which will also protect the aircraft from rain and wind because of the buoyant force.
  There are several ways to make aero graphene, but the most common approach includes reducing a precursor graphene oxide solution to make a graphene hydrogel. Through freeze-drying, any solvent is removed from the pores and replaced with air. A new method for producing aero graphene has emerged: 3-D printing. This is a significant scientific achievement. It creates a resin by diffusing graphene in a gel. The graphene resin can be cured into a solid and then dried in a furnace using UV LED light. Aero-graphene coating into the fuselage, wings and front glasses of the cockpit will give a great impact on the next-generation aircraft. Making an aircraft with aero-graphene will give the aircraft a strong and light skeleton.

• MARG szenzor alapú pozíció becslés periodikus mozgásra

  Nagy Balázs

  Megtekintések száma:

  152

  A kutatás során magnetométer, giroszkóp és gyorsulásérzékelő szenzorok (MARG szenzor) jeleinek fúzióját vizsgáltuk. A cikk fókusza a felügyelt tanulás által végzett szenzorfúzió, amely a különböző típusú mért adatok párhuzamosfeldolgozásán alapuló pozíció becslését jelenti periodikus mozgások esetén. A tanuló algoritmusok alkalmazhatóságát egy inga gyakorlati példáján keresztülvizsgáltuk meg