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190 Uppsatser om Electronics - Sida 11 av 13

Simulering av vindkraftverk och närliggande elnät vid Risholmen i Göteborg i SimPowerSystems

With background in the rapidly growing need to find solutions for sustainable energy production and the increasing interest for wind power, this report was written. With take-off point from the wind power plant Big Glenn, which has been built in the harbour of Gothenburg, a model of the adjacent power grid has been created in Simulink/SimPowerSystems. Parameters for the power grid and its components has been provided by Göteborg Energi Nät, that has also been the supplier of measurement data of produced power, the power need from loads in the vicinity, voltage levels, current values and also the variation of power factor at the wind power plant.The SimPowerSystems model has been used to perform simulations of power flow in the grid. These simulated values have then been compared to the measured values to verify the functionality of the model. Further, the model has been used to perform simulations of a grid fault, which causes a voltage drop.

Funktionella tester och utvärdering av skadepreventiv träning hos kvinnliga fotbollsspelare - en interventionsstudie

The exclusion of visually impaired from the information flow presented to us through signs was what led me into this project. With a growing amount of information being presented to us on signs and digital information surface the need of communicating this information in a way that could be read by visually impaired is evident. Looking into different ways of communication, my goal was to create something that filled the need of the visually impaired without branding them as disabled. Having a close relative with bad eyesight is became evident on how much it limited her in her everyday life, not being able to navigate herself without the support of her husband. Through interviews with her and others with varying diagnoses I reached an insight in their situation. To my surprise they still favored a visual form of communication before an auditory or tactile form, because it?s easy to survey and quick to interpret.

Konstruktion av värmespridare med grafit för flygelektronik

This master thesis was carried out for Saab Avitronics, a business unit of Saab ABactive in electronic systems for military aircrafts. Reliability and weight are of crucialimportance in this environment. To improve reliability and lower the weight graphitemay be used for Electronics cooling. Graphite is an anisotropic material and hasthereof high thermal conductivity in two directions (in-plane) and a relatively lowconductivity in the third direction (through thickness).The purpose of this thesis was to investigate if graphite is an adequate thermalconductor to use in PCB carriers. The carriers support and cool the PCB by divertingthe heat dissipation from the PCB components to the edge.

Analys av internt produktflöde för ökad kapacitet

This master thesis was carried out at ELFA, one of the largest catalogue distributors of Electronics in northern Europe. ELFA offers a wide selection of products such as measuring instruments, fuses and screwdrivers. The master thesis handles the possibilities of an increase in the internal flow of products. The background to this problem is ELFA?s acquisition of two new companies, which brought the product range in the warehouse from 55 000 to 80 000 products.

Grafisk utvecklingsplattform för signalbehandling - Design och implementation

We have different kinds of signal processing everywhere around us in our everyday life, in our cellphones, when we are listening to music, watching TV etc. This makes signal processing a very interesting and important technical area, where the demand of skilled engineers sets the limit of what is possible.Working with signal processing requires in-depth knowledge in areas such as mathematics, physics, Electronics, and other related areas. For this, it has traditionally been demanded by a talented developer to also master the advanced programming languages such as C / C + + and Assembler.This has begun to change; today there are several companies that offer graphical development environments for signal processing, environments where programming skills are not needed anymore, and the focus can be on signal processing instead.The goal with this project is to build a corresponding graphical development environment to reach an understanding of what is required of these systems, and also to grasp what opportunities that are available within graphic programming. Inspiration for the work has partly arise from some of the tools available on the market, and partly from previous theses that have been written about graphic programming.The challenge lies in creating a program that can execute signal diagrams in real time from given signal blocks, and be able to handle feedback loops in an efficient way and to do so at the lowest "cost" in terms of clock cycles as possible. This should also be compared against to code, compile and run a complete signal diagram directly.To increase the usability it should also be possibility to externally manage in real time the parameters of the signal diagram during execution.The interface is a separate program, which is to some extent similar to Matlab Simulink, where a signal diagram is drawn up graphically by connecting wires between different signal blocks.

Utvecklingen av mekatronikämnet på KTH : ? anställningsbarhet, forskning och innovation

This thesis examines history of the subject of mechatronics and innovation. The main reason tostudy mechatronics from a historical point of view is that it has never been done to a greater extent before. An overview is justified because various definitions have been used over the decades, but nowadays the subject has become more established. Focus in this thesis is mainly on development of the subject of mechatronics at Royal Institute of Technology in Stockholm. Innovation is the other aspect of this thesis.

Framtagning och miljömärkning av kvicksilverfri xenonstrålkastare

The project this report is handling has been implemented on NBB, Nordisk Bilbelysning AB in Linköping. The company produces and develops lightning and searchlights for all types of vehicles. Lately NBB´s supplier of Electronics, OSRAM, has developed a mercuryfree xenon lightsource. Mercury is one of the most hazardous environmental waste and to get rid of the mercury entirely in the lightsource is a big step that means alot for the environment.This lightsource will be placed in one of NBB´s worksearchlights called My, and will be sold as an alternative to mercurycontaining searchlights. NBB wants to put an environmental label on this product and they want to have essential information about the product that is needed for the production.

Design comparison between HiperLAN/2 and IEEE802.11a services

This paper is a study and comparison between the two Wireless LAN (WLAN) standards HiperLAN/2 and IEEE 802.11a. WLANs are used instead or together with ordinary LANs to increase mobility in for example an office. HiperLAN/2 is an European standard developed by ETSI and the IEEEs standard is American. A WLAN-card consists roughly of a Medium Access Control (MAC), Physichal layer (PHY) and an antenna. The antenna is the same for the different standards.

Eventmarknadsföringens påverkan på varumärkeskapitalet ur marknadschefers perspektiv

The purpose of this study is to create an understanding for marketing directors? viewabout how event marketing effect the company?s brand equity in four separatebusinesses. Our question formulation the study aims to answer is:How does event marketing effect the brand equity in international companies?We have chosen to perform a qualitative study with a semi structured research interviewto find out how event marketing as a marketing method, can be applied from theperspective of a marketing director in relation to our theoretical reference frame.To create structure and increase the understanding of our thesis, we will describe thebasics in brand and sponsorship theory, which will fall in to the marketing method ofevent marketing. Further we will describe the brand equity model that we will latermodify for our purpose.

Förutsättningar för hantering av kemikalierisker i förskolor : En fallstudie av Haninge kommun

Goods that children come in contact with on a daily basis for example toys, Electronics, textiles, household items, have attracted an increased attention in recent years because of a common occurrence of residues of potentially hazardous chemical substances. Some municipalities in Stockholm have developed plans for managing chemical risks and work systematically to phase out products containing hazardous substances. This thesis aims to contribute to an improved knowledge base for any future work with non-toxic nursery schools in Haninge. The study's focus is on the challenges encountered by conditions and problems of preschool personnel to manage chemical risks in early childhood environments. Primary data was collected through a qualitative approach based on semi-structured interviews with both the preschool staff and practitioners working in the central organization of the municipality.

Analys och utveckling av inbyggda GPS-applikationer f¨or anv¨andning inom fordonsindustrin

This thesis is a part of the DySCAS (Dynamically Self-Configuring Automotive System)project which has the overall purpose of creating a middleware for the Electronics in an automotive environment. The thesis has been made with collaboration with ENEA AB who is a member of the DySCAS project. ENEA AB has developed a demonstration platform to test the fundamental ideas which the DySCAS project is built on.The purpose of this thesis was to design and implement a GPS application to be added to the demonstration platform. This was done by adding a GPS receiver to the original DySCAS demonstration platform and designing and implementing an application to be able to extract the information from it. The resulting application is able to present cur- rent position and absolute time to the DySCAS networks as services to be used by other applications or by the network it self.

Framtagning av vibrationsfixtur

Autoliv Electronics AB utvecklar, tillverkar och säljer produkter till fordonsindustrin. När en produkt utvecklas utförs en rad olika miljötålighetstester. Dessa miljötålighetstester skall simulera alla miljöfaktorer som produkten stöter på under sin livscykel. Miljöfaktorerna som testas är mekaniska, kemiska, elektriska och termiska.De mekaniska miljöfaktorerna innefattar vibrationer, stötar, fall och slag. När vibration och stöttest utförs används en vibrator.

Mobiltelefon utformad med EcoDesign

The environmental demands are increasing when it comes to product development. EcoDesign isabout minimizing the environmental impact of a product, considering the entire life cycle of it,without compromising other qualities like function or cost. In this master of science thesis amobile phone has been analysed with Ten Golden Rules in EcoDesign regarding production, useand End of Life. Also a functional and an environmental profile were made. The goal was tomake a new concept phone, based on the previous analysis, which communicates userfriendlinessand sustainable development.

Direktinvesteringar - Övergripande strategi samt val och implementering av internationella etableringsmetoder

Syftet med uppsatsen är att undersöka vilka faktorer som kan ligga till grund för högteknologiska företags strategiska direktinvesteringsbeslut i utlandet och därigenom bidra till ökad förståelse för hur tänkandet kring dessa beslut fungerar.Uppsatsen bygger på en kvalitativ fallstudie av fyra högteknologiska företag; Beijer Electronics AB, CellaVision AB, Qliktech AB samt TAC AB, som har gjort direktinvesteringar i utlandet. Teoretiska ansatser används för att analysera empirin och visualisera de olika elementen i valet av etableringsstrategi.Företag som direktinvesterar i utlandet kan välja förvärv eller uppstart. Den strategiska process som valet utgör delas in i tre grundelement, övergripande strategi, etableringsval och implementering, som analyseras individuellt. Ju mer övergripande de strategiska tankarna är, desto större flexibilitet är nödvändig för företag som befinner sig på internationella marknader med mycket extern påverkan. På detaljnivå kan rationella strategier lättare implementeras.Avgörande för att direktinvestera är behovet av närvaro på strategiskt viktiga marknader och företagens önskan om att behålla vissa resurser internt i organisationen.

Fördelning av artiklar mellan varuhuslager och varuutlämningslager

Purpose ? The purpose with this thesis is to examine how items can be distributed between stores inventory and an external warehouse. To achieve the purpose criteria that should be considered, how these can be prioritized and used when distributing items between stores inventory and an external warehouse will be examined.Method ? The study started by an examination of the theory that already exists within the subject. The already existing theory has then been examined in reality, on the furniture company IKEA Jönköping, where a case study with one channel has been performed.

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