The objective with this project was to design a new lifting aid connected to toilet chair.A questionnaire distributed at three homes for aged people indicated that there was an interest in a mechatronic lifting device.Since existing products have limited tilting functionality, the new design was chosen to introduce lifting by motorised tilting of the sitting platform. The mechanical construction was analyzed based on a maximum load caused by a person with weight 160 kg. Two linear actuators were used to control the tilting/lifting of the sit ?place, making standing-up easer.Finally, 28 persons tested the new lifting device and gave their impressions. Many appreciated the safe, stable lifting speed.

I denna rapport redovisas arbetsgången för produktutvecklingen av ett rullstolsunderrede med nya design- och konstruktionslösningar. Det slutliga konceptet är ett underrede med två centrala konstruktionslösningar; en hydraulcylinder som medger vertikal sitthöjdsjustering, samt en vaggfunktion i sittplattan som medger ökad balans vid vinkeljustering. Samtliga funktioner på underredet har anpassats för att erbjuda ett enklare och renare ramverk..

Diesel electric propulsion is in many ways a good alternative to conventional shaft propulsion, both economically and environmentally. There are also many other good side effects which need to be considered, i.e. better manoeuvrability, more efficient use of space and less noise on board. However, there are applications where diesel electric propulsion is not profitable. Large ocean going ships? profitability is much depending on fuel costs and the diesel electric alternative cannot compete on long journeys with large low speed engines.This thesis will treat the aspects of choosing between a diesel electric system and a classic mechanical propulsion system.

Detta examensarbete har utförts i samarbete med Löfqvist Engineering i Örebro. Uppgiften har varit att utföra en simulering av en stor automatiserad produktionslina som ska användas vid tillverkning av avgassystem till lastbilar. Utifrån denna simulering skall exakta cykeltider för produktionen bestämmas. Dessa tider kan sedan användas av Löfqvist Engineering för att verifiera tidigare uppskattade tider.Arbetet inkluderar en litteraturstudie om Lean Production och hur det fungerar ihop med automation. Det finns även med lite bakgrundsinformation om Just In Time, olika filformat och robotsimulering i allmänhet för att ge en bättre överblick av ämnet.Programmet som har valts för att utföra simuleringen är Tecnomatix Process Simulate och den inbyggda Line Simulation modulen.

Målet med projektet är att utveckla ett system där det skall gå att komma åt information från en intern databas på ett enkelt sätt med en mobil enhet. Eftersom varje enskild databas är unik så skall det gå att justera systemet enkelt genom ett administrationsgränssnitt så att det passar till varje databas. Informationen är oftast känslig och skall inte åtkommas av obehöriga användare, så den mobila enheten behöver autentiseras för att skydda informationen. Systemet kommer alltså bestå av ett par applikationer:1. Webbtjänst som skall kommunicera med databasen och skicka information till webb- och den tjocka klienten.2. Webbaserad klient, skall kunna visa data från databasen.3. Tjock klient, skall kunna visa samt uppdatera data från databasen.4. Administrationsgränssnitt som skall kunna konfigurera webbtjänsten. För autentisering av användaren används telefon ID:et och sköts automatiskt av den tjocka klienten.

Störnings indikation på lågspänningsnät. Detta examensarbete har kommit till som ett resultat av företaget Öresundskrafts arbete med att installera ny teknik för datatransmission över elnätet. Uppgiften var att indikera störningar mellan 5-95 kHz på 400 V nätet med hjälp av en applikation för förenklad insamling och loggning av mätvärden baserad på ett oscilloskop kopplat till en dator via GPIBprotokollet och programmet LabVIEW..

This report is a thesis for collegeengineering program in structuralengineering at Uppsala University andwas commissioned by the Swedishcontractor Svevia. The study aims toprovide an overview of the mostbeneficial bridge material from bothenvironmental and economic point ofview.The life-cycle analysis covers onlycarbon dioxide emissions, since it isthe most spoken of in today?s climateagenda. Furthermore, this study aims tohighlight which parts, of the systemboundary, that contributes to greatercarbon emissions for the wood- and theconcrete bridge.The life-cycle cost analysis wascalculated with a lifespan of 40 yearsand covers the basic cost of investment,operating and maintenance, anddecommissioning costs.The analyzed constructions in this studyare existing projects that are almostcompleted. Both bridges were designed tohandle loads up to 60 tons.

This thesis gives suggestions as to how to design a wooden-based wave-power buoy. The thesiswas carried out at Uppsala University in collaboration with the Division of Electricity and AppliedMechanical engineering. The product was conceived and developed taking into consideration anumber of requirements put forward by the supervisor, Magnus Rahm. The most importantdemands were that the material used should be able to withstand pressure from the sea withoutbeing damaged and that the production costs should be low.Department of Engineering Sciences, Division of Electricity at Uppsala University was visitedseveral times to discuss issues including the various ideas with the supervisor Magnus Rahm, andwith several people in the department.The work started by studying available literature in order to get background information aboutsuitable methods available for the project and to see how similar projects were carried out. Thereason for this was to get a better understanding of this particular problem and how to solve it.After consulting the supervisor, the group decided to construct four different buoys using fourdifferent materials.

This thesis gives suggestions as to how to design a wooden-based wave-power buoy. The thesiswas carried out at Uppsala University in collaboration with the Division of Electricity and AppliedMechanical engineering. The product was conceived and developed taking into consideration anumber of requirements put forward by the supervisor, Magnus Rahm. The most importantdemands were that the material used should be able to withstand pressure from the sea withoutbeing damaged and that the production costs should be low.Department of Engineering Sciences, Division of Electricity at Uppsala University was visitedseveral times to discuss issues including the various ideas with the supervisor Magnus Rahm, andwith several people in the department.The work started by studying available literature in order to get background information aboutsuitable methods available for the project and to see how similar projects were carried out. Thereason for this was to get a better understanding of this particular problem and how to solve it.After consulting the supervisor, the group decided to construct four different buoys using fourdifferent materials.

The impact of computer programs in safety-critical systems has increased in the past decades and computer-based systems can now be found in a wide range of applications. A new approach for developing dependable systems is documenting all design rationale that affects safety using Intent Specifications. A recent approach for developing complex systems efficiently and in an upgradeable manner is Component-Based System Engineering. In this thesis, these approaches are combined in the development and upgrade of a Remote Robot Control Unit by using the tool SpecTRM. The case study showed that Intent Specifications and CBSE could successfully be combined.

AbstractThe assignment were assigned by Camatec Industriteknik AB. Camatec is a Karlstadlocated consulting company, they make everything from pilot studies to complete projects in mechanical design and calculation. They even have their own patented product, Camcoil. It is a winder for steel strips and is used for example with hardening of the steel strip. The assignment has been to solve the problems encountered by some customers within this product.

Outsourcing means to contract out work previously done within the cooperation to a supplier.This is an increasing trend today. Traditionally companies have outsourced manufacturing butwith the growing specialization they tend to outsource other activities as well.China?s economical reforms and entrance into the World Trade Organization, WTO, hasenabled international business connections. Since China offers one of the cheapest labours inthe world, many companies have an interest in starting up an activity in the country. Themany foreign investments in China have lead to an economical growth which in turn hasmade it possible for China to invest in the Chinese competence and innovative capacity.The commissioner of this master thesis, SMS, is one of the leading actors in retrieval ofamong other things mounts and stands for flat screens and projectors.

Quadrotor UAVs are self-stabilizing, autonomous flying machines that has recently become more popular than ever. Unmanned Aerial Vehicles have their roots in the military, where they were developed for use in reconnaissance and combat. During the last few years, advances in the fields of electronic sensors, electric motors and microcontrollers have enabled smaller designs and autonomic flight control even for private use. The quadrotor, which is the particular kind of UAV we are looking closer at in this paper, has 4 rotors in an X-like formation. This configuration has many advantages such as good lift capacity, non-complex mechanical structure and serviceability.In this project we aquired a current overview of the domain and determine whether it is possible to construct a quadrotor UAV designed for use in a WISENET sensor network on a low budget and short time schedule.Based on existing community project AeroQuad, a quadrotor is constructed with a budget of about 500 euro.

The game QuantoJump is developed in the programming language Java to be an educational game in quantum physics. By illustrating quantum mechanical laws of electron transitions with shapes and colours, QuantoJump hopes to spark interest and create a more intuitive understanding of quantum physics. The result is a game where the player plays as an electron in the outermost shell of an atom, with the goal of getting to the innermost shell. This while not making forbidden jumps by following the laws of electron transitions dictated by quantum physics. The programming of the game was done in the integrated develpoment environment Eclipse.

The purpose of doing this essay was to illustrate how people living with chronic disease, dependent on medical technology experience their life situation. The study includes people with either dialysis therapy, mechanical ventilator or chronic oxygen therapy. A meta-synthesis was used as a method where a systematically review of studies that are made in a given issue compiles. Findings of the studies resulted in a synthesis of three themes: Limitations in life as a consequence of life-long treatment, to take responsibility for your life provide self-esteem and safeness, and to be cared for in different contexts ?help or prohibit.