CCL

Összesen 17 találat.
#/oldal:
Részletezés:
Rendezés:

1.

001-es BibID:BIBFORM090755
035-os BibID:(cikkazonosító)815 (Scopus)85099862943 (WOS)000610903800001
Első szerző:Almusawi, Husam Abdulkareem (mérnök)
Cím:Design and Development of Continuous Passive Motion (CPM) for Fingers and Wrist Grounded-Exoskeleton Rehabilitation System / Husam Almusawi, Géza Husi
Dátum:2021
ISSN:2076-3417
Megjegyzések:Impairments of fingers, wrist, and hand forearm result in significant hand movement deficiencies and daily task performance. Most of the existing rehabilitation assistive robots mainly focus on either the wrist training or fingers, and they are limiting the natural motion; many mechanical parts associated with the patient's arms, heavy and expensive. This paper presented the design and development of a new, cost-efficient Finger and wrist rehabilitation mechatronics system (FWRMS) suitable for either hand right or left. The proposed machine aimed to present a solution to guide individuals with severe difficulties in their everyday routines for people suffering from a stroke or other motor diseases by actuating seven joints motions and providing them repeatable Continuous Passive Motion (CPM). FWRMS approach uses a combination of; grounded-exoskeleton structure to provide the desired displacement to the hand's four fingers flexion/extension (F/E) driven by an indirect feed drive mechanism by adopting a leading screw and nut transmission; and an end-effector structure to provide angular velocity to the wrist flexion/ extension (F/E), wrist radial/ulnar deviation (R/U), and forearm supination/pronation (S/P) driven by a rotational motion mechanism. We employed a single dual-sided actuator to power both mechanisms. Additionally, this article presents the implementation of a portable embedded controller. Moreover, this paper addressed preliminary experimental testing and evaluation process. The conducted test results of the FWRMS robot achieved the required design characteristics and executed the motion needed for the continuous passive motion rehabilitation and provide stable trajectories guidance by following the natural range of motion (ROM) and a functional workspace of the targeted joints comfortably for all trainable movements by FWRMS.
Tárgyszavak:Műszaki tudományok Informatikai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
hand recovery
rehabilitation robotics
stroke
indirect drive system
grounded-exoskeleton
continuous passive motion (CPM)
wrist rehabilitation
assistive technologies
Megjelenés:Applied Sciences-Basel. - 11 : 2 (2021), p. 1-23. -
További szerzők:Husi Géza (1962-) (gépészmérnök, mechatronikai mérnök, számítógépes tervezőmérnök)
Internet cím:Szerző által megadott URL
DOI
Intézményi repozitóriumban (DEA) tárolt változat
Borító:

2.

001-es BibID:BIBFORM103518
035-os BibID:(cikkazonosító)8862 (WOS)000851006900001 (Scopus)85137759099
Első szerző:Erdei Timotei István (mechatronikai mérnök)
Cím:Design of a digital twin training centre for an industrial robot arm / Timotei István Erdei, Rudolf Krakó, Géza Husi
Dátum:2022
ISSN:2076-3417
Megjegyzések:The Cyber-Physical and Intelligent Robotics Laboratory has been digitally recreated, and it includes all the key elements that allow 6-axis industrial robots to perform PTP, LIN, and CIRC motions. Furthermore, the user can create a program with these motion types. The human-machine interface is also integrated into our system. It can also assist SMEs in developing their in-house training. After all, training on an industrial robot unit does not entail installation costs within the facility. Nor are there any maintenance and servicing costs. Since the lab is digital, additional robot units can be added or removed. Thus, areas for training or production can be pre-configured within each facility. Because of the customizability and virtual education format, there is no room capacity problem, and trainees can participate in the exercises in parallel. Exercises were also conducted to evaluate the program's impact on teaching, and the results showed that using machine units can improve teaching. Even today's digital labs cannot physically convey the sense of space or the relative weights of different elements in virtual space. Even with these features, individuals can operate a machine more effectively than relying solely on traditional, non-interactive demonstration materials.
Tárgyszavak:Műszaki tudományok Informatikai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
industrial robot
digital twin
hmiCPS Lab
industry 4.0
Unreal Engine
Megjelenés:Applied Sciences-Basel. - 12 : 17 (2022), p. 1-25. -
További szerzők:Krakó Rudolf Husi Géza (1962-) (gépészmérnök, mechatronikai mérnök, számítógépes tervezőmérnök)
Internet cím:DOI
Intézményi repozitóriumban (DEA) tárolt változat
Borító:

3.

001-es BibID:BIBFORM099887
035-os BibID:(cikkazonosító)1057 (Scopus)85123110884 (WOS)000754950800001
Első szerző:File Máté
Cím:Optical Investigation of the Limits of Modeling the Nonlinear Elastic Behavior of PA6 Using Linear Elastic Material Models / Máté File, Tamás Mankovits, Dávid Huri
Dátum:2022
ISSN:2076-3417
Megjegyzések:Featured Application In the design of engineering polymeric products, the detailed finite element investigation is indispensable. In most cases, polymeric products are investigated with multilinear material models over the entire stress-strain range. The definition of these material models requires material parameters, which must be obtained through time and cost demanding laboratory measurements. For some applications, such as quasi-static loading, it would be sufficient to use a linear elastic material model, the material constants of which can be obtained quickly. This article can help designers to apply the right material model as the linear elastic material model can be used until the 0.96% strain value in the case of the PA6 material with sufficient accuracy. One of the most critical issues during polymer finite element simulations is the selection of the proper material models. The widely used and accepted multilinear material models require load case-specific material tests, which are time and cost demanding. Data for these characteristics must be acquired by standardized measurements. On the other hand, the parameters required to create a linear elastic material model in most cases are easy to obtain, and the establishment of the model is a shorter process. This research is aimed to provide information to engineers about the possibility of modeling the nonlinear elastic materials by using linear elastic material models and about the limits of such models. To create the most accurate material models, laboratory measurements were performed on polyamide (PA6) material, which is a widely used raw material in the industry. Test specimens were manufactured to obtain material constants according to the ISO 527-2 standard, and for validating the effectiveness of the applied material models, three different tensile specimens were created, which were tested under quasi-static loading in the elastic region. A comprehensive finite element investigation was performed, and the numerical results were then compared to laboratory measurements using the GOM Aramis digital image correlation (DIC) system. By comparing the optically measured strain data to the numerical results, it was determined that the nonlinear elastic materials can be modeled using linear elastic models in a well identifiable strain range with sufficient accuracy.
Tárgyszavak:Műszaki tudományok Anyagtudományok és technológiák idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
polyamide 6
finite element analysis
digital image correlation
material model fitting
Megjelenés:Applied Sciences-Basel. - 12 : 3 (2022), p. 1-16. -
További szerzők:Mankovits Tamás (1981-) (gépészmérnök) Huri Dávid (1990-) (gépészmérnök)
Internet cím:DOI
Intézményi repozitóriumban (DEA) tárolt változat
Borító:

4.

001-es BibID:BIBFORM100074
035-os BibID:(Scopus)85123408279 (WOS)000754780600001 (cikkazonosító)1312
Első szerző:Guzsvinecz Tibor (mérnök)
Cím:The Effects of Display Parameters and Devices on Spatial Ability Test Times / Tibor Guzsvinecz, Éva Orbán-Mihálykó, Cecília Sik-Lányi, Erika Perge
Dátum:2022
ISSN:2076-3417
Megjegyzések:The effects of display parameters and devices are examined on spatial ability test times in virtual environments. Before the investigation, completion times of 240 and 61 students were measured, using an LG desktop display and the Gear VR, respectively. The virtual environment also logged the following randomized display parameters: virtual camera type, field of view, rotation, contrast ratio, whether shadows are turned on, and the used display device. The completion times were analyzed using regression analysis methods. Except for the virtual camera type, every factor has a significant influence on the test completion times. After grouping the remaining factors into pairs, triplets, quartets, and quintets, the following can be concluded: the combination of 75 degrees field of view, 45 degrees camera rotation, and 3:1 contrast ratio has the largest increase in completion times with an estimate of 420.88 s-even when this combination is in-side a quartet or a quintet. Consequently, significant decreases in completion times exist up to variable quartets (the largest being -106.29 s on average), however, the significance disappears among variable quintets. The occurrences of factors were also investigated: an undefined field of view, a 0 degrees camera rotation, the Gear VR, a 7:1 contrast ratio, and turned-on shadows are the factors that occur in most significant combinations. These are the factors that often and significantly influence completion times.
Tárgyszavak:Műszaki tudományok Informatikai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
cognitive skills
desktop display
Gear VR
human-computer interaction
mental rotations
patial ability
virtual reality
Megjelenés:Applied Sciences-Basel. - 12 : 3 (2022), p. 1-16. -
További szerzők:Orbán-Mihalykó Éva (matematikus) Sik-Lányi Cecilia (mérnök) Perge Erika (1972-) (informatikus)
Internet cím:Szerző által megadott URL
DOI
Intézményi repozitóriumban (DEA) tárolt változat
Borító:

5.

001-es BibID:BIBFORM082890
035-os BibID:(WoS)000522540400102 (Scopus)85081265028
Első szerző:Guzsvinecz Tibor (mérnök)
Cím:The Influence of Display Parameters and Display Devices over Spatial Ability Test Answers in Virtual Reality Environments / Tibor Guzsvinecz, Cecilia Sik-Lanyi, Eva Orban-Mihalyko, Erika Perge
Dátum:2020
ISSN:2076-3417
Tárgyszavak:Műszaki tudományok Informatikai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:Applied Sciences-Basel. - 10 : 2 (2020), p. 1-27. -
További szerzők:Sik-Lányi Cecilia (mérnök) Orbán-Mihalykó Éva (matematikus) Perge Erika (1972-) (informatikus)
Internet cím:Szerző által megadott URL
DOI
Intézményi repozitóriumban (DEA) tárolt változat
Borító:

6.

001-es BibID:BIBFORM102153
035-os BibID:(Scopus)85131553351 (cikkazonosító)5451 (WOS)000809194500001
Első szerző:Huri Dávid (gépészmérnök)
Cím:Surrogate Model-Based Parameter Tuning of Simulated Annealing Algorithm for the Shape Optimization of Automotive Rubber Bumpers / Dávid Huri, Tamás Mankovits
Dátum:2022
ISSN:2076-3417
Megjegyzések:Featured Application The developed surrogate model-based parameter tuning method of the simulated annealing algorithm is suitable for solving not only numerical simulation optimization problems but also other computationally intensive model-driven optimizations. A design engineer has to deal with increasingly complex design tasks on a daily basis, for which the available design time is shrinking. Market competitiveness can be improved by using optimization if the design process can be automated. If there is limited information about the behavior of the objective function, global search methods such as simulated annealing (SA) should be used. This algorithm requires the selection of a number of parameters based on the task. A procedure for reducing the time spent on tuning the SA algorithm for computationally expensive, simulation-driven optimization tasks was developed. The applicability of the method was demonstrated by solving a shape optimization problem of a rubber bumper built into air spring structures of lorries. Due to the time-consuming objective function call, a support vector regression (SVR) surrogate model was used to test the performance of the optimization algorithm. To perform the SVR training, samples were taken using the maximin Latin hypercube design. The SA algorithm with an adaptive search space and different cooling schedules was implemented. Subsequently, the SA parameters were fine-tuned using the trained SVR surrogate model. An optimal design was found using the adapted SA algorithm with negligible error from a technical aspect.
Tárgyszavak:Műszaki tudományok Anyagtudományok és technológiák idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
finite element analysis
hyperelastic material model
support vector regression
engineering optimization
simulated annealing
parameter tuning
Megjelenés:Applied Sciences-Basel. - 12 : 11 (2022), p. 1-22. -
További szerzők:Mankovits Tamás (1981-) (gépészmérnök)
Internet cím:Szerző által megadott URL
DOI
Intézményi repozitóriumban (DEA) tárolt változat
Borító:

7.

001-es BibID:BIBFORM085890
035-os BibID:(cikkazonosító)3584 (WOS)000541440000245 (Scopus)85085608229
Első szerző:Huri Dávid (gépészmérnök)
Cím:Parameter Selection of Local Search Algorithm for Design Optimization of Automotive Rubber Bumper / Dávid Huri, Tamás Mankovits
Dátum:2020
ISSN:2076-3417
Tárgyszavak:Műszaki tudományok Anyagtudományok és technológiák idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:Applied Sciences-Basel. - 10 : 10 (2020), p. 1-16. -
További szerzők:Mankovits Tamás (1981-) (gépészmérnök)
Internet cím:DOI
Intézményi repozitóriumban (DEA) tárolt változat
Borító:

8.

001-es BibID:BIBFORM106246
035-os BibID:(WoS)000916877000001 (Scopus)85146591508
Első szerző:Kertész József (járműmérnök)
Cím:Al-Foam Compression Tests in Parallel and Serial Concepts / József Kertész, Máté File, Zoltán Nyikes, Tünde Anna Kovács, László Tóth
Dátum:2023
ISSN:2076-3417
Megjegyzések:Taking into consideration the additional weight of a vehicle, today`s requirements can only be met using new materials and designs. The application of metal foam is one of the most promising methods of enhancing the impact energy absorption ability of the crumple zone. The energy-absorbing capacity of thin-walled structures filled with metal foams during compression can be notably improved, which results in lower loading on the passengers. The main goal of our research is to develop a new design that is suited to absorb more impact energy while taking into consideration weight optimization. The authors wanted to unveil the effect of the inhomogeneous filler material in these thin-walled structures. Therefore, the present study investigates the compression test of two metal foams of different densities, in different ways. In the first section, the foams were compressed independently from each other by a recording of a stress-strain diagram. After the single compression, the foams were loaded together, first in parallel, and subsequently in a serial scheme. The study aimed to reveal the effect of the parallel and serial compression scheme focusing on the sum of impact energy absorption.
Tárgyszavak:Műszaki tudományok Anyagtudományok és technológiák idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
aluminum foam
crumple zone
passive safety system
serial compression
Megjelenés:Applied Sciences-Basel. - 13 : 2 (2023), p. 1-14. -
További szerzők:File Máté (2000-) (mérnök) Nyikes Zoltán Kovács Tünde Anna Tóth László
Internet cím:DOI
Intézményi repozitóriumban (DEA) tárolt változat
Borító:

9.

001-es BibID:BIBFORM094624
035-os BibID:(cikkazonosító)4943 (WOS)000659635900001 (Scopus)85107914481
Első szerző:Lakatos Ákos (fizikus, környezetmérnök, létesítménymérnök)
Cím:Systematic analysis of micro-fiber thermal insulations from thermal properties point of view / Ákos Lakatos, István Csarnovics, Attila Csík
Dátum:2021
ISSN:2076-3417
Megjegyzések:This paper contains laboratory measurements of four different micro-fiber thermal insulation materials to reveal their applicability limits under various environmental conditions. On the samples, scanning electron microscope investigations were executed to disclose the structure of the fibers. The study also investigated the most important thermal parameters of the samples, namely, the thermal conductivity and the calorific value with the specific heat capacity. Humidity measurements and hydrophobic tests were also conducted and the sorption isotherm of the samples was registered. To reveal the thermal stability as well as the applicability limits, differential scanning calorimetry and Raman spectroscopy measurements have also been performed. As a result of these comprehensive measurements, one can predict the behavior of the samples in various external circumstances. The results can generate further studies and are very useful for both designers, planners, and researchers. In the European Union, almost 40% of all energy consumption comes from buildings, while another 20-25% comes from transport. In the European Union, including Hungary, only buildings with almost-zero energy demand could be built after 2020, and the use of renewable energies must be strengthened. The Renewable Directive stipulated that by 2020, the share of renewable energy in buildings must be 25%, and in transport it must be 10%; the use of electric vehicles is vital. There are about four million dwellings in Hungary, of which approximately three million need to be renovated, and only some of these (a few hundred) meet the cost-optimized level of the 2020 directive. The use of insulation materials is very important in the transport sector, too. Insulation materials are also used by aircraft and electric vehicles. To reduce the energy loss from buildings, different insulation materials can be used; investigations of insulation materials are very important. This paper presents a comprehensive research report on insulation materials which could be used for building elements, HVAC (heating, ventilation, and air conditioning appliances) equipment, and vehicles. In this paper, laboratory investigations will be presented along with calculations to better understand the properties and behavior of these materials. For this, firstly structural analysis with scanning electron microscope will be presented. Moreover, the paper will present thermal conductivity and combustion heat measurement results. The sorption and hydrophobic behavior of the materials will be also revealed. Finally, the article will also display differential scanning calorimetry measurements and Raman spectroscopy results of the samples. The research was conducted on four different types of colorized microfiber lightweight wool insulation.
Tárgyszavak:Műszaki tudományok Anyagtudományok és technológiák idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
thermal properties
fibrous insulation
sthermal insulation
Megjelenés:Applied Sciences-Basel. - 11 : 11 (2021), p. 1-18. -
További szerzők:Csarnovics István (1986-) (fizikus) Csik Attila (1975-) (fizikus)
Internet cím:Intézményi repozitóriumban (DEA) tárolt változat
DOI
Borító:

10.

001-es BibID:BIBFORM089143
035-os BibID:(cikkazonosító)7824 (WoS)000588986300001 (Scopus)85095707299
Első szerző:Lakatos Ákos (fizikus, környezetmérnök, létesítménymérnök)
Cím:Exceeding the Applicability Limit of Aerogel Super Insulation Materials in Different Environmental Conditions / Ákos Lakatos
Dátum:2020
ISSN:2076-3417
Tárgyszavak:Műszaki tudományok Gépészeti tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:Applied Sciences-Basel. - 10 (2020), p. 1-14. -
Internet cím:Intézményi repozitóriumban (DEA) tárolt változat
Borító:

11.

001-es BibID:BIBFORM102041
035-os BibID:(cikkazonosító)5012 (Scopus)85130682602 (WOS)000801771800001
Első szerző:Pusztai László Péter (logisztikai menedzser)
Cím:Selection of Production Reliability Indicators for Project Simulation Model / Pusztai László Péter, Nagy Lajos, Budai István
Dátum:2022
ISSN:2076-3417
Megjegyzések:Due to technological enhancements, traditional, qualitative decision-making methods are usually replaced by data-driven decision-making even in smaller companies. Process simulation is one of these solutions, which can help companies avoid costly failures as well as evaluate positive or negative effects. The reason for this paper is twofold: first, authors conducted a Quality Function Deployment analysis to find the most vital reliability indicators in the field of production scheduling. The importance was acquired from the meta-analysis of papers published in major journals. The authors found 3 indicators to be the most important: mean time between failure (MTBF), mean repair time and mean downtime. The second part of the research is for the implementation of these indicators to the stochastic environment: possible means of application are proposed, confirming the finding with a case study in which 100 products must be produced. The database created from the simulation is analyzed in terms of major production KPIs, such as production quantity, total process time and efficiency of the production. The results of the study show that calculating with reliability issues in production during the negotiation of a production deadline supports business excellence.
Tárgyszavak:Társadalomtudományok Gazdálkodás- és szervezéstudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
production reliability
reliability
mean time between failure (MTBF)
mean time to repair (MTTR)
process simulation
project production
Megjelenés:Applied Sciences-Basel. - 12 : 10 (2022), p. 1-15. -
További szerzők:Nagy Lajos (1964-) (agrármérnök) Budai István (1977-) (folyamatmérnök)
Internet cím:Szerző által megadott URL
DOI
Intézményi repozitóriumban (DEA) tárolt változat
Borító:

12.

001-es BibID:BIBFORM118617
035-os BibID:(Cikkazonosító)1440
Első szerző:Sarvajcz Kornél (villamosmérnök, mechatronikai mérnök)
Cím:AI on the Road: NVIDIA Jetson Nano-Powered Computer Vision-Based System for Real-Time Pedestrian and Priority Sign Detection / Sarvajcz Kornel, Ari Laszlo, Menyhart Jozsef
Dátum:2024
ISSN:2076-3417
Megjegyzések:Advances in information and signal processing, driven by artificial intelligence techniques and recent breakthroughs in deep learning, have significantly impacted autonomous driving by enhancing safety and reducing the dependence on human intervention. Generally, prevailing ADASs (advanced driver assistance systems) incorporate costly components, making them financially unattainable for a substantial portion of the population. This paper proposes a solution: an embedded system designed for real-time pedestrian and priority sign detection, offering affordability and universal applicability across various vehicles. The suggested system, which comprises two cameras, an NVIDIA Jetson Nano B01 low-power edge device and an LCD (liquid crystal system) display, ensures seamless integration into a vehicle without occupying substantial space and provides a cost-effective alternative. The primary focus of this research is addressing accidents caused by the failure to yield priority to other drivers or pedestrians. Our study stands out from existing research by concurrently addressing traffic sign recognition and pedestrian detection, concentrating on identifying five crucial objects: pedestrians, pedestrian crossings (signs and road paintings separately), stop signs, and give way signs. Object detection was executed using a lightweight, custom-trained CNN (convolutional neural network) known as SSD (Single Shot Detector)-MobileNet, implemented on the Jetson Nano. To tailor the model for this specific application, the pre-trained neural network underwent training on our custom dataset consisting of images captured on the road under diverse lighting and traffic conditions. The outcomes of the proposed system offer promising results, positioning it as a viable candidate for real-time implementation; its contributions are noteworthy in advancing the safety and accessibility of autonomous driving technologies.
Tárgyszavak:Műszaki tudományok Informatikai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
ADAS
AI
CNN
computervision
deeplearning
embeddedsystem
neuralnetworks
PyTorch
real-time object detection
transfer learning
Megjelenés:Applied Sciences-Basel. - 14 : 4 (2024), p. 1-24. -
További szerzők:Ari László Menyhárt József (1988-) (gépészmérnök, létesítménymérnök, lean szakmérnök)
Internet cím:Szerző által megadott URL
DOI
Intézményi repozitóriumban (DEA) tárolt változat
Borító:
Rekordok letöltése1 2 
Corvina könyvtári katalógus v8.2.27 © 2023 Monguz kft. Minden jog fenntartva.