To design new and high tech products the engineers rely more and more on computer based simulations to investigate the properties and behavior for a component or system.To verify these computer based simulations the dynamic properties for the components of the drivetrain needs to be verified. Therefore measurements of the stiffness and vibrations for the rear axle has been performed. This report show how the measurements has been implemented and evaluated, along with some interesting results for the rear axles properties.The static stiffness for the drive shaft along with the axle-gear has been determined. It is found that the stiffness for the whole rear axle is near the stiffness for the drive shaft, which means that the drive shaft becomes the dominant component of the system and affects the rear axle stiffness the most. The measured stiffness of the driveshaft is close to its theoretical stiffness.The stiffness for solely the hypoid-gear have been calculated using the stiffness for the rear axle and driveshaft, and thus has a range for the stiffness of the hypoid gear been determined.The backlash for the whole rear axle and for some individual components has been determined, where the backlash between pinion and crown-Wheel has negligible impact on the total backlash.Measurements of the crown-Wheel and pinion movements have been conducted, where the direction of movement is consistent with the theoretical direction of the forces.The vibration measurements show that the vibrations are more severe at certain rotational speeds.

Denna uppsats kommer att handla hur man kostnadseffektiviserar produktioner och arbetar som ett produktionsbolag mot Webb-tv. Skillpoint, som skriver recensioner, publicerar nyheter och gör intervjuer inom spel, har varit vår uppdragsgivare. Genom samarbetet med Skillpoint har vi under kandidatarbetet producerat videor i form av intervjuer, reportage, serier, topplistor och spelrecensioner. Produktionerna har bestått av antingen Skillpoints eller våra egna idéer..

This report deals with an exam report written by Olle Hjalmarsson and Thomas Likar, students at Högskolan i Halmstad. The project was carried out for Haldex Traction AB in Landskrona whose business consist of manufacturing automatic all Wheel drive systems (AWD-system). These systems consist of a plate clutch which activates all four Wheels of a 4-Wheel driven vehicle. An important component in these clutches is the accumulator which basically consists of a piston under the load of a spring which creates an oil pressure with the help of an electric motor used for actuating the clutch.At Haldex difficulties has been experienced regarding the assembly of the accumulator parts due to the small tolerances between the piston and the hole of the accumulator in the cast aluminium housing. Attempts have been made to assemble the parts in existing robot cells.

Eco-design is all about improving products environmental performances throughout the products lifecycle by including the environmental aspect into the product development process. There are a large number of different tools that can be used for this, but there are several factors that can affect which one will be the best to use. Some tools for eco-design takes comprehensive studies and can only be performed by experts, while some tools can be used more time- and cost efficient and with basic knowledge. The choice of tool should be based on the company?s situation.This report describes the research of how the design and furniture company Blå Station could include a tool for eco-design in their product development process.

Denna uppsats kommer att handla hur man kostnadseffektiviserar produktioner och arbetar som ett produktionsbolag mot Webb-tv. Skillpoint, som skriver recensioner, publicerar nyheter och gör intervjuer inom spel, har varit vår uppdragsgivare. Genom samarbetet med Skillpoint har vi under kandidatarbetet producerat videor i form av intervjuer, reportage, serier, topplistor och spelrecensioner. Produktionerna har bestått av antingen Skillpoints eller våra egna idéer..

Saab Aerosystems has a long tradition and a lot of competence in the field of flight simulation. Their ambition to broaden the market horizon has led to a discussion about also selling vehicle simulation solutions, both for military and civilian use.The aim of this thesis is to investigate the driver?s experiences of the accelerations he or she is exposed to whilst driving in rough terrain. The results may be used as a basis for future decisions and can act as a platform for the construction of an effective simulation model.To investigate the driver?s exposure of acceleration, some kind of dynamic simulation is needed.

En ökad kostnadseffektivitet i svenska företag är viktigt för att dessa ska kunna bibehålla sin internationella konkurrenskraft. Då el- och andra energipriser förutsägs stiga i framtiden ökar även företagens energikostnader. Genom energieffektivisering kan företag minska sina kostnader utan att förlora konkurrenskraft.Detta arbete har utförts på GETRAG All Wheel Drive AB i Köping och syftar till att kartlägga företagets energianvändning och därigenom lokalisera potentiella möjligheter till energieffektivisering av företagets olika processer. Kartläggningen har haft särskilt fokus på elenergianvändningen då denna står för den största kostnaden bland energislagen. Hänsyn har endast tagits till möjliga besparingar och ingen investeringskostnad för effektiviseringsåtgärderna har beräknats.Kartläggningen har genomförts genom mätningar av elanvändningen på produktionsnivå i kronhjulstillverkningen samt insamling av övergripande mätdata över elanvändningen för övriga stöd- och produktionsprocesser.

Several technical solutions are ready to step forward as the new generation of propellant, and this report aims to explore the possibility of commercializing fuel cell cars. The report is based on current research and data from today's technology and engineering solutions that are estimated to be commercially realized before 2020.A mapping of today?s different fuel cell options has shown that the most suitable fuel cell option is the Proton Exchange Membrane Fuel Cell, which uses hydrogen as fuel. The report is focusing on a techno-economic well-to-Wheel analysis of hydrogen and the energy balance and costs in a system perspective. The basis for this analysis consists of two centralized methods of production, steam methane reforming (SMR), and alkaline water electrolysis.

Volvo Construction Equipment is a world leading company in construction machinery. Tomaintain the best products, development is prioritized. The master thesis regards sound reductionof the hydraulic system on a Wheel loader. The background to the master thesis is asimulation made on the hydraulic system, performed autumn 2005. The result of the simulationshows that the energy of the pressure ripple is reduced when the paralleled hydraulicpumps are phase shifted and reduces each others pump pulsations.

This is a thesis for a Bachelor Degree Project, performed in the subject MechanicalEngineering. The students Roger Malmberg and Simon Hagberg have carried out adesign project on behalf of the recently established company J&D Assisting systems,located in Halmstad.The project consisted in developing J&D's first prototype of a power assisting solutionfor Wheelchairs. A power assisted Wheelchair combines human power, which is deliveredby the arms through the pushrims, with electrical motors, which are powered by a battery.The power assisted Wheelchair is aimed at customers, who have used a regularWheelchair for a long time, but who have become weaker or just need additional powerwhen driving uphill. This kind of Wheelchair will provide additional power for users,which will spare their wrists, elbow and shoulders. The product is torque sensor free andinstead it relies on the velocity.

In recent years many cities have seen an increase in bicycle traffic. This is a development that benefits both the environment and the individual cyclist. When the need for bicycle parking is not met several problems arise such as an increase in bicycle thefts, jammed sidewalks and a decreased interest in using bicycles. My aim with this paper has been to answer the question of how to create parking facilities in an urban environment based on cyclists' needs. Through a literature survey, following the method "Trattmodellen" (the funnel model) the question has been answered and divided under the headings cyclist, bike, bicycle racks, bicycle garage and bicycle operators and hosts.

This essay is a product of our examination work on candidate level in Interaction Design. The aim in this project was to design a digital wallet integrated into a cellular phone and make it as an electronic payment tool. In our project the goal has been to create a digital wallet not just for payment, but also develop it into a complete digital wallet, replacing visa, membership card, student cards, id card and receipt. Our ambition is to take care of current qualities of today's wallet and improve where it is possible so that can be replaceable with the digital wallet..

Volvo Wheel Loaders är en av världens ledande tillverkare av hjullastare. Examensarbetet är utfört på huvudfabriken, som ligger i Arvika. Bakgrunden till projektet är att det finns en vilja från ledningen att införa statistisk processtyrning (SPS) i produktionen. Viljan kommer av krav i kvalitetssystemet och att framtida investeringar i automatiserad häftsvetsning kommer att kräva större precision i produktionen. Examensarbetets syfte var att inleda och underlätta ett införande av SPS.

Problem: The relations between first and second tier suppliers within the automotive industry have changed drastically during recent years. Previously involving the supply of simple components, today the relation involves collaborative product development of complex subsystems. The situation is rather new for the actors, hence there are a number of problems that act as restraints for the collaboration. In order to come to terms with these problems, it is important to determine the underlying causes. Purpose: The purpose of this thesis is to make a survey of the main problems in the collaborative product development between first and second tier suppliers within the Swedish automotive industry.

During spring 2012, six students at the Royal Institute of Technology in Stockholm carried out agroup project in the field of mechatronics as part of the thesis for the bachelor degree. The resultwas a robot with active balancing and the purpose of this report is to describe the development,manufacturing and problems that arose during the project. The finished robot has two Wheelsmounted in line with each other, like a bicycle. Measurement data from an accelerometer and agyroscope are used together in a complementary filter for determining the angle from the verticalplane. For balancing, a PID controller was used to control the rotation of a reaction Wheel, whenaccelerating causes a straightening torque.