Ziga Gosar - Academia.edu (original) (raw)

Papers by Ziga Gosar

The dataset contains anonymous and aggregated data related to the surveys for the initial assessm... more The dataset contains anonymous and aggregated data related to the surveys for the initial assessment of application performance originated in the framework of REMODEL project, and presented in the deliverable "D2.3 – Initial assessments of application performance".

Proceedings of the 13th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications, 2018

The handling of flexible materials is complicated task in robotics and automation. Due to deforma... more The handling of flexible materials is complicated task in robotics and automation. Due to deformability and fragility of flexible materials, robots are equipped with the state-of-the-art sensors and grippers to perform such tasks. Nonetheless, industry still lacks for approaches and techniques for handling these materials. Therefore, several industries and mass production systems require hiring human to perform the deformable materials-related task. These tasks might include usage of toxic martials (e.g. carbon fiber sheets) or dangerous tools (e.g. sharp cutting knives). In this regard, this paper presents an approach for selecting grasping configuration of objects based on the product’s properties such as rigidity, surface roughness and shape, and the required task. Briefly, this research is based on several published taxonomies for modeling the hand of the human while grasping different objects. After refining the taxonomy, an ontology model is populated which will be queried for...

Sustainability, 2021

In order to survive in today’s highly competitive global market, small and medium-sized enterpris... more In order to survive in today’s highly competitive global market, small and medium-sized enterprises (SMEs) have had to transition from sequential to concurrent product development, which significantly shortens development cycles, reduces costs, and ensures high product quality. Despite its many benefits, concurrent product development is still based on detailed upfront planning and cannot address the challenges related to today’s ever-growing uncertainty, constantly changing environment, and unstable requirements. A potential solution to this problem could be in more flexible and value-driven agile project management (APM) approaches, typical of software development. In this paper, we propose a new product development model specifically appropriate for SMEs that combines concurrent product development principles with APM elements. It is designed as a loop of five repetitive steps (macroplan, microplan, iteration activities, review, and retrospective) that are being executed within i...

2017 18th International Conference on Advanced Robotics (ICAR), 2017

Sustainability, 2020

In today’s highly dynamic and unpredictable project environment, companies need to be able to man... more In today’s highly dynamic and unpredictable project environment, companies need to be able to manage changes quickly and effectively, otherwise, the final product will not be current and will only go to waste. Traditional project management approaches that focus on planning are no longer efficient and companies are forced to adopt new ways of working. As a result, more flexible agile project management (APM) approaches have emerged over the last decades. Originally developed for the software industry, APM is now increasingly recognized and adopted also by other industry sectors. However, due to some discipline-specific differences, the adoption of APM by non-software companies is challenging and requires many adjustments and high financial input. While the larger organizations have sufficient resources to make such a transition, small and medium-sized enterprises (SMEs) generally cannot afford to do so, and therefore need alternative strategies to increase their agility and stay com...

Materials, 2020

An extremely asymmetric low-pressure discharge was used to study the composition of thin films pr... more An extremely asymmetric low-pressure discharge was used to study the composition of thin films prepared by PECVD using HMDSO as a precursor. The metallic chamber was grounded, while the powered electrode was connected to an RF generator. The ratio between the surface area of the powered and grounded electrode was about 0.03. Plasma and thin films were characterised by optical spectroscopy and XPS depth profiling, respectively. Dense luminous plasma expanded about 1 cm from the powered electrode while a visually uniform diffusing plasma of low luminosity occupied the entire volume of the discharge chamber. Experiments were performed at HMDSO partial pressure of 10 Pa and various oxygen partial pressures. At low discharge power and small oxygen concentration, a rather uniform film was deposited at different treatment times up to a minute. In these conditions, the film composition depended on both parameters. At high powers and oxygen partial pressures, the films exhibited rather unusu...

Robotics and Computer-Integrated Manufacturing, 2020

System technologies, 2020

The research results of signal recognition using neural networks are presented. A multilayer perc... more The research results of signal recognition using neural networks are presented. A multilayer perceptron with back-propagation error is implemented on Java. The optimal number of neurons in the hidden layer is selected for building an effective architecture of the neural network. Training network on different sets of signals with noise allowed teaching her to work with distorted information, which is typical for non-destructive testing in real conditions. Experiments were performed to analyze MSE values and accuracy.

Materials, 2019

An industrial size plasma reactor of 5 m3 volume was used to study the deposition of silica-like ... more An industrial size plasma reactor of 5 m3 volume was used to study the deposition of silica-like coatings by the plasma-enhanced chemical vapor deposition (PECVD) method. The plasma was sustained by an asymmetrical capacitively coupled radio-frequency discharge at a frequency of 40 kHz and power up to 7 kW. Hexamethyldisilioxane (HMDSO) was introduced continuously at different flows of up to 200 sccm upon pumping with a combination of roots and rotary pumps at an effective pumping speed between 25 and 70 L/s to enable suitable gas residence time in the plasma reactor. The deposition rate and ion density were measured continuously during the plasma process. Both parameters were almost perfectly constant with time, and the deposition rate increased linearly in the range of HMDSO flows from 25 to 160 sccm. The plasma density was of the order of 1014 m−3, indicating an extremely low ionization fraction which decreased with increasing flow from approximately 2 × 10−7 to 6 × 10−8. The cor...

Plasma Chemistry and Plasma Processing, 2019

Optical emission spectroscopy and mass spectrometry was used to characterize gaseous plasma in an... more Optical emission spectroscopy and mass spectrometry was used to characterize gaseous plasma in an industrial reactor of volume 5 m3 during deposition of protective coatings. Plasma was created in mixtures of hexamethyldisiloxane (HMDSO) and oxygen at the powers between 1 and 8 kW. The plasma density was somehow below 1014 m−3. The flows of both gases were varied up to 200 sccm while the effective pumping speed was adjusted by changing the roots pump rotation speed between 250 and 4000 rpm. At such conditions the HMDSO was only partially dissociated to fragments. The behaviour of optical emission lines and mass ion currents was well correlated indicating that even one single technique was sufficient to monitor the behaviour of plasma at various discharge conditions. The optical emission spectroscopy as a simple and economic method is therefore suitable for controlling key processing parameters in such a plasma reactor.

Coatings, 2019

The deposition of protective coatings on aluminised polymer substrates by a plasma enhanced chemi... more The deposition of protective coatings on aluminised polymer substrates by a plasma enhanced chemical vapour deposition PECVD technique in a plasma reactor with a volume of 5 m3 was studied. HMDSO was used as a precursor. Plasma was sustained in a capacitively coupled radiofrequency (RF) discharge powered by an RF generator operating at 40 kHz and having an adjustable output power up to 8 kW. Gaseous plasma was characterised by residual gas mass spectrometry and optical emission spectroscopy. Polymer samples with an average roughness of approximately 5 nm were mounted into the plasma reactor and subjected to a protocol for activation, metallisation and deposition of the protective coating. After depositing the protective coating, the samples were characterised by secondary ion mass spectrometry (SIMS) and X-ray photoelectron spectroscopy (XPS). The combination of various techniques for plasma and coating characterisation provided insight into the complex gas-phase and surface reactio...

Polymers, 2021

Cellulose is a promising biomass material suitable for high volume applications. Its potential li... more Cellulose is a promising biomass material suitable for high volume applications. Its potential lies in sustainability, which is becoming one of the leading trends in industry. However, there are certain drawbacks of cellulose materials which limit their use, especially their high wettability and low barrier properties, which can be overcome by applying thin coatings. Plasma technologies present a high potential for deposition of thin environmentally friendly and recyclable coatings. In this paper, two different plasma reactors were used for coating two types of cellulose-based substrates with hexamethyldisiloxane (HMDSO). The changes in surface characteristics were measured by atomic force microscopy (AFM), scanning electron microscopy (SEM), surface free energy and contact angles measurements, X-ray photoelectron spectroscopy (XPS), and secondary ion mass spectrometry (SIMS). Successful oleofobization was observed for an industrial scale reactor where pure HMDSO was used in the abs...

Sustainability, 2021

In order to survive in today’s highly competitive global market, small and medium-sized enterpris... more In order to survive in today’s highly competitive global market, small and medium-sized enterprises (SMEs) have had to transition from sequential to concurrent product development, which significantly shortens development cycles, reduces costs, and ensures high product quality. Despite its many benefits, concurrent product development is still based on detailed upfront planning and cannot address the challenges related to today’s ever-growing uncertainty, constantly changing environment,
and unstable requirements. A potential solution to this problem could be in more flexible and valuedriven agile project management (APM) approaches, typical of software development. In this paper, we propose a new product development model specifically appropriate for SMEs that combines concurrent product development principles with APM elements. It is designed as a loop of five repetitive steps (macroplan, microplan, iteration activities, review, and retrospective) that are being
executed within individual concurrent development loops. The application of the model is presented on a real case example of process development and small batch manufacture of a complex wiring harness. The study reveals many benefits of the proposed model, such as improved communication, faster detection of discrepancies, more effective problem solving, and greater flexibility. A positive impact on project success is also observed.

Polymers, 2021

Ventil, 2020

Many manufacturing companies, especially automotive suppliers, face high requirements for low val... more Many manufacturing companies, especially automotive suppliers, face high requirements for low value-added products. As a result, cost reduction with the optimization of production processes is becoming increasingly important.
One such process is the fitting of adhesive tape to polymeric products, which is currently a fully manual process in the company in question. The purpose of this research was to create the concept of a robot cell as a proposal for process improvement and to compare the states before and after automation, especially from a cost perspective, as well as with other indicators. The value flow analysis has shown that, with the improved process, the production flow time is greatly reduced, as is the occupancy of the production space. It has been proven that by implementing a robot cell into the process, it is still possible to meet customer requirements in terms of both volume and quality. In addition, only one worker is required to operate the robotic process. It should also be emphasized that the use of robots eliminates the negative effect of the old process on human health (e.g. inhalation of volatile solvent), and the more accurate dosing of the minimum required amount of solvent reduces the environmental impact. The robot cell thus follows the guidelines of Industry 4.0, which is increasingly present in our region. Changing the process requires an initial investment, which was calculated in the research to return in a year.

Sustainability , 2020

In today's highly dynamic and unpredictable project environment, companies need to be able to man... more In today's highly dynamic and unpredictable project environment, companies need to be able to manage changes quickly and effectively, otherwise, the final product will not be current and will only go to waste. Traditional project management approaches that focus on planning are no longer efficient and companies are forced to adopt new ways of working. As a result, more flexible agile project management (APM) approaches have emerged over the last decades. Originally developed for the software industry, APM is now increasingly recognized and adopted also by other industry sectors. However, due to some discipline-specific differences, the adoption of APM by non-software companies is challenging and requires many adjustments and high financial input. While the larger organizations have sufficient resources to make such a transition, small and medium-sized enterprises (SMEs) generally cannot afford to do so, and therefore need alternative strategies to increase their agility and stay competitive on the global market. In this paper, we present a case study of a Slovenian medium-sized manufacturing company that implemented only certain APM practices separately and not as part of a structured APM methodology, and still managed to achieve significant benefits: improved communication, faster detection of discrepancies, more effective problem-solving and greater flexibility. The results also suggest that APM practices, even when implemented separately, positively impact project success in terms of both efficiency and stakeholder satisfaction, and can thus help in establishing an economically, socially, and environmentally more sustainable workplace.

Robotics and Computer Integrated Manufacturing, 2020

The manufacturing industry is seeing an increase in demand for more custom-made, low-volume produ... more The manufacturing industry is seeing an increase in demand for more custom-made, low-volume production. This type of production is rarely automated and is to a large extent still performed manually. To keep up with the competition and market demands, manufacturers will have to undertake the effort to automate such manufacturing processes. However, automating low-volume production is no small feat as the solution should be adaptable and future proof to unexpected changes in customers' demands. In this paper, we propose a re-configurable robot workcell aimed at automating low-volume production. The developed workcell can adapt to the changes in manufacturing processes by employing a number of passive, reconfigurable hardware elements, supported by the ROS-based, modular control software. To further facilitate and expedite the setup process, we integrated intuitive, user-friendly robot programming methods with the available hardware. The system was evaluated by implementing five production processes from different manufacturing industries.

Proceedings of the 13th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications, 2018

Sustainability, 2021

2017 18th International Conference on Advanced Robotics (ICAR), 2017

Sustainability, 2020

Materials, 2020

Robotics and Computer-Integrated Manufacturing, 2020

System technologies, 2020

Materials, 2019

Plasma Chemistry and Plasma Processing, 2019

Coatings, 2019

Polymers, 2021

Sustainability, 2021

In order to survive in today’s highly competitive global market, small and medium-sized enterpris... more In order to survive in today’s highly competitive global market, small and medium-sized enterprises (SMEs) have had to transition from sequential to concurrent product development, which significantly shortens development cycles, reduces costs, and ensures high product quality. Despite its many benefits, concurrent product development is still based on detailed upfront planning and cannot address the challenges related to today’s ever-growing uncertainty, constantly changing environment,
and unstable requirements. A potential solution to this problem could be in more flexible and valuedriven agile project management (APM) approaches, typical of software development. In this paper, we propose a new product development model specifically appropriate for SMEs that combines concurrent product development principles with APM elements. It is designed as a loop of five repetitive steps (macroplan, microplan, iteration activities, review, and retrospective) that are being
executed within individual concurrent development loops. The application of the model is presented on a real case example of process development and small batch manufacture of a complex wiring harness. The study reveals many benefits of the proposed model, such as improved communication, faster detection of discrepancies, more effective problem solving, and greater flexibility. A positive impact on project success is also observed.

Polymers, 2021

Ventil, 2020

Sustainability , 2020

Robotics and Computer Integrated Manufacturing, 2020

The purpose of the work is to determine the mechanical and thermal properties of composite polyme... more The purpose of the work is to determine the mechanical and thermal properties of composite polymeric materials. The group of samples consisting of a sample of polypropylene, three samples of polypropylene with quartz sand of different granulations and a sample of polypropylene with calcium carbonate. Shares of impurities in base material were identical. The dependence and durability of the material was determined by measuring shear strength, structural analysis of the material (degree of crystallinity) and measurements of differential scanning calorimetry (DSC analysis). The result of a DSC experiment is a curve of heat flux versus temperature or versus time. There are two different conventions: exothermic reactions in the sample shown with a positive or negative peak, depending on the kind of technology used in the experiment. The results show that the added inorganic particles to the primary polymer material change the initial kinetics of the formation process of the structure. This consequently leads to changes in the behavior of the final product. It should be particularly noted that all additives affect the reduction of the compliancy of the shear creep as a function of temperature. Additives similarly affect the dependence of the compliancy of the shear creep as a function of time.

The quality of the polymer product is defined by its functionality and durability. Functionality ... more The quality of the polymer product is defined by its functionality and durability. Functionality and durability of this system depend on the structure of the material in the product. Changes in the structure of materials at the macro scale will cause a change of material characteristics, which are taken as an advantage of polymers in solving a given problem. Material properties of a given polymer material depend on the boundary conditions that result in modification of the structure. Research work presents how temperature influences on change of material properties in such a way that the material due to the impact absorbs more energy. Such a material could be used to protect a variety of objects due to the impact. The objective is to present the dependence of the damping properties of the product in the impulse loading in dependence on the temperature and the material. Determination of physical characteristics, which we have identified, can be dissipated at a certain temperature. In the experiment, we confirm the assertion that it is possible to change the damping properties of the polymeric material with temperature. It was confirmed that rapid increase in impact resistance corresponds to transition from brittle to ductile type of failure.

KUHLJEVI DNEVI 2019, 2019

Povzetek. V delu je obravnavan preskok sistema dvakrat povezane plitke rotacijsko ne osnosimetrič... more Povzetek. V delu je obravnavan preskok sistema dvakrat povezane plitke rotacijsko ne osnosimetrične dvoslojne lupine v homogenem temperaturnem polju. Obravnava problema zahteva obravnavo ravnovesje sil in momentov na deformiranem sistemu ob sočasnem upoštevanju teorije velikih premikov. Na osnovi izbrane nelinearne teorije je bil izdelal fizikalno matematični model, s katerim je popisana geometrija sistema, premično in napetostno termo-mehansko stanje. Model lupine je izdelan z metodo končnih elementov (MKE). Dvoslojna plitka lupina mora v svoji življenjski dobi zdržati 10^7 preklopov. Zaradi velikega števila preskokov sistema morajo biti lupine dimenzionirane na trajno dinamično trdnost. Predstavljeni so rezultati napetosti, ki se pojavijo v času preskoka sistema plitke lupine. Napetosti, ki se pojavijo v geometrijskih stanjih lupine so v elastičnem območju in ne presegajo 85% maksimalne elastične vrednosti napetosti.

26. ICMT, 2018

In this work were made out absolute measurements of the electron density in the ECR discharge pla... more In this work were made out absolute measurements of the electron density in the ECR discharge plasma at moderate pressures by optical emission spectroscopy (OES). The range of plasma parameters suitable for nanostructuring, functionalization and optimal wettability of polymer material in a reasonable treatment time was evaluated. The flux of positively charged oxygen ions was varied between discharge parameters. The flux of neutral atoms was varied independently from discharge parameters (and thus the ion flux) using a movable recombinator. The corresponding fluences was achieved by variation of treatment time. Plasma parameters were measured by electrical and catalytic probes, optical spectroscopy and mass spectrometry, while surface finish by atomic force and scanning electron microscopies. The optimal range of plasma parameters was determined in a big industrial reactor of volume 6000 liters. The coupling of discharges suitable for achieving the optimal range of plasma parameters as determined with high performance computer was studied for large reactors first theoretically and then experimentally using alternative electrode configurations. Once optimal plasma parameters were achieved in the large size reactor the production of components for automotive industry went on. Variations in the discharge parameters and the electron temperature of HMDSO plasma have been investigated in the pressure range of 1 × 10-2 to 7 × 10-2 mbar at MF plasma of power up to 9 kW. The plasma electron temperature in the above ranges of gas pressures and input powers has been measured and determined using optical emission spectroscopy (OES) from the intensity ratios of spectral lines. The OES results agree qualitatively and quantitatively with the data obtained using the double probe. The results of the research activity were optimized production parameters of process in automotive industry.

Small and medium size enterprises (SMEs) often have small batch production. It leads to decreasin... more Small and medium size enterprises (SMEs) often have small batch production. It leads to decreasing product lifetimes and also to more frequent product launches. In order to assist such production, a highly reconfigurable robot workcell is being developed. In this work, a visual inspection system designed for the robot workcell is presented and discussed in the context of the automotive light assembly example. The proposed framework is implemented using ROS and OpenCV libraries. We describe the hardware and software components of the framework and explain the system's benefits when compared to other commercial packages.

High volume production has been a prerequisite in order to invest into automation of the manufact... more High volume production has been a prerequisite in order to invest into automation of the manufacturing process for decades. The high cost of setup and the in exibility of the solution meant low batch productions, often present in small and medium-sized enterprises (SMEs), were dismissed for automation. In order to bring automation closer to SMEs a flexible solution is required that can accommodate more than one manufacturing process, allows rapid change between them and doesn't require expertise knowledge for set up. In this paper we present a novel robotic workcell that enables active reconfiguration of software and hardware components, facilitating set up and production of several manufacturing processes on a single robotic cell. The ROS based software has been designed to be robot independent and modular.
Special user interfaces have been developed for cell calibration, programming by demonstration and set up of quality control and part localization tasks. The proposed workcell is applicable in companies with product families, where manufacturing processes are similar and where fast changeover is required in order to adapt to new production requirements quickly. Due to the emphasis put on ease of use it will also
be of interest to companies getting into automation for the first time.

Za uporabo robotov v maloserijski proizvodnji je potrebno obiti številne težave. Menjava serije i... more Za uporabo robotov v maloserijski proizvodnji je potrebno obiti številne težave. Menjava serije izdelkov je drag časovno zamuden proces zato se robotska proizvodnja običajno uporablja v velikoserijski proizvodnji. Da bi omejitev obšli je bila v sklopu projekta ReconCell razvita robotska celica naslednje generacije, ki s pomočjo fleksibilnih in rekonfigurabilnih pristopov obvladuje proizvodnjo raznolikih izdelkov. V članku so opisani ključni mehanski in programski pristopi, ki to omogočajo. Obravnavana je tudi njihova implementacija ter rezultati njihove uporabe na področju proizvodnje avtomobilskih žarometov.

The work focuses on the development of novel methodologies for the automated inspection of surfac... more The work focuses on the development of novel methodologies for the automated inspection of surface defects like sink marks, welding lines, scratches and gloss inhomogeneity on a high quality freeform plastic part by utilizing multi-axial robotic handling systems. The robotic handling system was used due to the needed part positioning flexibility for the entire inspection of visible surface parts. In the work, the robot handling system is adapted for the inspection of varying freeform part characteristics. This work presents novel methods for the inspection of plane high and ultra-high gloss surfaces were developed and presented. In the presented work, only one image is taken of the molded part. Image was taken with a camera and is in the form of an intensity matrix having n times m pixels. Intensity matrix is optionally converted into a further matrix. Intensity matrix is folded using at least one function describing a contrast perception characteristic and/or a resolving power of a human eye. With respect to a predetermined threshold value the matrix obtained in this manner is used to calculate whether an existing defect, where applicable, is recognized by a human eye.

The main objective of the work is to present the design and implementation of a new kind of a rec... more The main objective of the work is to present the design and implementation of a new kind of a reconfigurable robot workcell – ReconCell, which is attractive not only for large production lines but also for few-of-a-kind production, which often takes place in SMEs. The presented workcell is based on novel technologies for programming, monitoring and executing assembly operations in an autonomous way. Innovative reconfiguration technologies enable the workcell to be automatically reconfigured to execute new assembly tasks efficiently, precisely, and in an economically viable way with a minimum amount of human intervention. On the business side, our ambition and vision is to bring the reconfigurable robot workcell system to the market. Our strategy is to develop solutions for real life industrial use cases to demonstrate the advantages and capabilities of the developed robot workcell. Our ambitions also include preparation of the post-project commercial phase, with a focus on the development of a business roadmap, as well as involvement of investors for setting up a commercially sustainable enterprise. The ReconCell can subsequently be implemented and scaled as a new product and business for the world market with a product and distribution philosophy that enables a global uptake of the technology/production companies.

The paper deals with the buckling and mechanical conditions in the thin shallow double layered sh... more The paper deals with the buckling and mechanical conditions in the thin shallow double layered shell with star shape opening on top of the shell. According to the theory of third order, which takes into account the equilibrium state of forces and moments which are acting on the deformed system, the thesis is presenting a model with mathematical description of the geometry of the system, stresses, thermo elastic strains and displacements. As an example, the results of spherical shallow shells are analysed with finite element method. Besides simply-roller supported shells, also simply bearing-supported and clamped shells are discussed. The shells are loaded with temperature and/or with concentrated acting load at the top of it.

In an increasingly competitive manufacturing industry it is becoming ever more important to rapid... more In an increasingly competitive manufacturing industry it is becoming ever more important to rapidly react to changes in market demands. In order to satisfy these requirements , it is crucial that automated manufacturing processes are flexible and can be adapted to new production requirements quickly. In this paper we present a novel automatically recon-figurable robot workcell that addresses the issues of flexible manufacturing. The proposed workcell is reconfigurable in terms of hardware and software. The hardware elements of the workcell, both those selected off-the-shelf and those developed specifically for the system, allow for fast cell setup and recon-figuration, while the software aims to provide a modular, robot-independent, ROS-based programming environment. While the proposed workcell is being developed in such a way as to address the needs of production-oriented SMEs where batch sizes are relatively small, it will also be of interest to enterprises with larger production lines since it additionally targets high performance in terms of speed, interoperability of robotic elements, and ease of use.

ReconCell aims at designing and implementing a new kind of an autonomous robot workcell, which wi... more ReconCell aims at designing and implementing a new kind of an autonomous robot workcell, which will be attractive not only for large production lines but also for few-of-a-kind production, which often takes place in SMEs. The proposed workcell is based on novel ICT technologies for programming, monitoring and executing assembly operations in an autonomous way. It can be nearly automatically reconfigured to execute new assembly tasks efficiently, precisely, and economically with a minimum amount of human intervention. This approach is backed up by a rigorous business-case analysis, which shows that the ReconCell system is economically viable also for SMEs.

Robotizirana strega polizdelkov je v avtomobilski industriji že dobro uveljavljena. Ta je pogosto... more Robotizirana strega polizdelkov je v avtomobilski industriji že dobro uveljavljena. Ta je pogosto povezana z vizualno kontrolo. Tako je potrebno usklajeno delovanje vizualne kontrole in obvladovanja gibanja v majhnem delovnem območju z upoštevanjem kratkih časov ciklov izdelave za obe fazi procesa. Hitro lahko ugotovimo, da človek vsem omenjenim zahtevam težko zadosti, če pa upoštevamo še v industriji zelo zaželeno čim večjo ponovljivost v daljšem časovnem obdobju, vidimo, da res dober končni rezultat lahko dosežemo le z robotizacijo in strojnim vidom. Strojni vid in industrijski roboti zaradi svoje ponovljivosti, hitrosti, gibljivosti in fleksibilnosti predstavljajo eno izmed ustreznih rešitev Podjetje ELVEZ se je v ta namen povezalo z inštituti znanja. Skupaj smo na mednarodnem projektu COMET razvili metodo za zmanjšanje stroška izmeta na kosih, ki se metalizirajo. Cilj projekta COMET je postavitev robotske celice za pregled kosov in detekcijo napak na kosih v industrijskem okolju. Z robotsko celico in strojnim vidom preverjamo kakovost kosov po dekorativnih normah. Za zmanjšanje stroškov izmeta in hitrejši odzivni čas v primeru napake pregledujemo surove kose, ki še niso metalizirani. Z ustrezno vizualno metodo detektiramo in vrednotimo vizualne efekte, ki se pojavijo na površini zaradi odboja svetlobe. Demonstracijska robotska celica je postavljena v Leobnu. Cilj za prihodnost je postavitev robotizirane celice s strojnim vidom v industrijsko okolje, kjer se bo ločevalo dobre kose od slabih.

Cilj dela je bila izdelava originalne, inovativne, univerzalne in ekonomsko učinkovite rešitve z ... more Cilj dela je bila izdelava originalne, inovativne, univerzalne in ekonomsko učinkovite rešitve z visoko fleksibilnim izdelanim kabelskim snopom z integrirano kontrolo kakovosti procesa, ki bi bil uporaben na najrazličnejših področjih kabelske konfekcije. V delu je predstavljen najnovejši znanstveno raziskovalni in aplikativni rezultat s področja tehnologije izdelave kabelskih snopov, avtomatizacije, zagotavljanja kakovosti znotraj procesa in tehnologije izdelave kabelskih snopov. S predlaganim sistemom je možno učinkovito obvladovati kakovost proizvodnje.

Odsek za avtomatiko, biokibernetiko in robotiko IZVLEČEK V delu, ki je povzetek diplomske naloge,... more Odsek za avtomatiko, biokibernetiko in robotiko IZVLEČEK V delu, ki je povzetek diplomske naloge, ki je raziskovalne narave, je predstavljena robotizacija delovnega mesta pri kosih, ki imajo visoke dekorativne standarde. V avtomobilski industriji so roboti zelo razširjeni, njihove lastnosti so vse boljše in primerni so za vse bolj zahtevna dela. Namen dela je prikazati, da z robotom v proizvodnji lahko uspešno racionaliziramo najrazličnejše procese, še posebno, če uporabljamo simulacijske postopke. V ta namen je bila v okviru razvojne naloge s programom RobotStudio izdelana simulacija robotizacije delovnega mesta. Posebna pozornost je bila namenjena konstruiranju univerzalnih prstov robotske prijemalke. Z njimi smo omogočili prijemanje levih in desnih kosov, ne da bi pri tem zamenjali prijemalo. Za izvedbo eksperimenta je bil uporabljen ABB robot IRB140. Po izvedbi eksperimenta je bila izdelana tabela, kjer so vidni rezultati realizacije naložene plošče. Ugotovljeno je bilo, da tako kot delavci potrebujejo ergonomsko pripravljeno delovno mesto, tudi roboti v proizvodnji potrebujejo robotu primerno delovno okolje in opremo.