A manufacturing machine at the engineering company Sandvik Coromant has a positioning table which task is to move an item linearly. The positioning table has a linear motor capable of high velocity and acceleration. This makes it possible to achieve short cycle times and a more profitable production.The purpose of this thesis is to bring forward a new concept which is more adapted to the requirements of the positioning table. The reason is that the current positioning table provides an unnecessarily positioning accuracy of 0.01 mm, while the requirement for the positioning accuracy is just 0.1 mm. The goal is to reduce manufacturing and component costs.To develop a suitable solution an approach for the concept development process has been performed.

Requirements Engineering processen, RE-processen, är den tidiga fasen i ett systemutvecklingsprojekt, där RE-processens syfte är att identifiera, verifiera, validera samt dokumentera en mängd krav som ett nytt eller utvidgat system skall konstrueras efter. RE-processen skall mynna ut i en kravspecifikation där de dokumenterade kraven finns samlade.Detta examensarbete behandlar ämnet systemutveckling och fokuserar på konsultföretags metodanvändande under RE-processen. Att fokus ligger på RE-processen beror på att denna fas är den mest kritiska delen i ett systemutvecklingsprojekt.För att få svar på vilka metoder som konsultföretag använder under RE-processen har en intervjundersökning gjorts.Resultatet av undersökningen visar att konsultföretag använder olika metoder under RE-processen. Sättet att använda dem fungerar på ungefär samma sätt med ett aktivt deltagande från kundernas sida. Systemutvecklingsmetoderna är också uppbyggda på liknande sätt med samma synsätt att arbeta efter..

This thesis primarily includes a study on whether companies can develop a mathematical activity that supports students' motivation in mathematics. The work was done together with Midroc Electro, a company that pays attention to the difficulty of recruiting and therefore was interested in investigating how the business world would be able to contribute.The thesis can be divided into three stages. The first part comprised by a exploration into research on student motivation regarding mathematics as well as numerous interviews with engineers to see how the research findings did fit with Midroc Electros reality. In these studies it became clear that the student who aims for a profession whose education or work requires math belongs to the group of students who primarily manage their studies in mathematics, that is, those that have the greatest motivation to work hard and complete their studies.Research information and interviews were compared and resulted in the thesis second part, Midroc Challenge. An activity where students primarily came to learn about the engineering profession and secondly how mathematics can be used in the engineering profession.

Vid produktutveckling inom industriföretag finns idag luckor vad gäller IT-stöd i arbetets olika faser. Införandet av s.k. RBE-system (Rule Based Engineering) är ett steg på vägen mot att försöka fylla dessa luckor. Meningen med ett RBE-system kan sägas vara att ersätta traditionella konstruktionshandböcker med motsvarande konstruktionsanvisningar i digital form. Detta ger möjligheter till automatisering av processer som är tidskrävande, monotona och ofta förekommande, t.ex.

This report is a degree paper made for the Engineering program in Technical Chemistry at the School of Engineering, Jönköping University.The intention of the project which is described, is to answer whether HV71 might become environmentally certified according to the criteria of "miljödiplomering". The project also included an investigation of which further steps and measures must be undertaken by the enterprise in order to achieve the certificate. The final part was to implement the necessary requirements for the certification.The report starts with a short background where the origin and function of environmental management is briefly explained.The report continues with how the practical work with the environmental certification was done according to requirements of Jönköping municipality. Motivations behind each part of the process are given as well as explanations of how each part of the process was carried out.The final result of the project was that HV71 took the measures needed to live up to the required demands. After a revision made by Miljöstrategen i Jönköping AB, HV71 passed the demands and became thereby an environmentally certified business..

Detta arbete är sekretess belagt under de närmaste två åren och därför kommer bara sammanfattningen att publiceras för tillfället..

Företaget Radius Control Systems AB sysslar huvudsakligen med utveckling och underhåll av SCADA applikationer. Radius hade önskemål om att kunna visa väderinformation från en väderstation i Radius egna övervakningssystem Uni-View. Detta skulle ske via ABB: s styrsystem AC 800M/ 800xA, med en PM856 processor. Arbetet handlar om att upprätta kommunikation mellan en PLC och väderstation, och från PLC vidare upp till Uni-View. Rapporten behandlar hela arbetsprocessen med början från en prototyp till ett fungerande system.

The Master of Science in Energy Systems Engineering program at Uppsala University started in 2000 and 221 students has graduated since. This master thesis aims to answer what competencies alumni considers most important for successful professional practice. It also seeks to find out how these competencies are reflected in the program to identify potential gaps between importance and how the competencies are being prepared. With inspiration from similar research a method has been developed consisting of two steps: (1) A survey and (2) interviews with alumni. The alumni survey rates the professional importance of 13 competencies and how well the corresponding competency is prepared in the program.

This thesis was performed at Vendig AB which is a company that develops and sells products such as belt scrapers for conveyor. The thesis is divided into two parts, one part where it´s investigated which tension force is required to tighten Vendig AB´s scraper Hampus against the belt in a correct way. The second part is called mechanical design and here a new and more compact tension device is developed.Field studies has been conducted at a couple of Vendig AB´s costumers to get a knowledge base about how Vendig AB´s products are used, how they function and the environment they operate in. During one of the field studies the force between the scraper and the belt was measured. The result from the measurements, together with a report from LKAB [1], were evaluated and summarized in a table.

Background: With the removal of audit requirement for companies in Sweden from the first of november 2010, a lot of companies has chosen not to keep the audit requirement. So far 57 percent of the small companies has chosen to keep the audit, in spite of that they don´t need to which led us to the problem statement: Which are the factors that affect a small limited company to choose to keep the audit, in spite that now there is a possibility to choose not to use audit anymore?Purpose: The purpose of the essay is to examine why small limited companies choose to keep the audit, in spite that now there is a possibility to choose not to use audit?Method: This research founds itself in a qualitative study with a deductive research approach. We have been studying secondary data in books and articles and preformed 29 phone interviews with small ltd company owners in Sweden. The selection consisted of 14 companies with credit debts and 15 companies without credit debts.

This is a thesis presents a differential gear which is found in a tracked vehicle called BvS10. The tracked vehicle is manufactured by BAE Systems Hägglunds AB in Örnsköldsvik, Sweden. The differential gear has a bolted house. The differential meets the requirement specifications, but the problem is that the bolts are sheared off because of the extreme torque that the differential is exposed to resist.Previous report on the differential show pictures of bolts which have been sheared off at the threads. This report is also includes three lists that explain seven different proposals which some are approved and some are not, and the report also presents the force, tensile, and shear stress.In a bolted connection there is both axial tension stress and radial shear stress, which can lead to wear out and broken bolts.

The high level of energy consumption that the industrialised countries have reached and thepollution that this brings has long been a cause for analysis and debate, development and usageof so called renewable energy sources is therefore more important than ever. The energy in theelectromagnetic radiation from the sun is an interesting alternative. One way of harvesting thisenergy is by using solar cells, devices that generate DC current when exposed to electromagneticradiation.The goal of this master?s thesis was to design a solar powered power supply to Syntronic AB?sMidrange platform. The envisioned application is a stand-alone distributed embedded system,for example a node-based temperature monitoring system.

Neurography is the most objective and reliable measure of the peripheral nerve function, and it is used to diagnose both local and generalized neuropathies. Neurography can measure both motor and sensory nerve functions. The principle for sensory neurgraphy is to stimulate over the nerve and record proximal or distal from the stimulated electrode.At the Department of Clinical Neurophysiology, University Hospital Uppsala, a problem has been identified, in that young adult patients tend to show unexpected abnormal neurography values in relation to the expected, indicated by the reference limits, without clinical correlates. This concerns foremost the sensory amplitudes in median and ulnar nerves. The hypothesis is that the requirement of young adults? amplitudes is too high.

Detta arbete är en magisteruppsats i Systemvetenskap med inriktning data och systemvetenskap, 10 poäng, vid Luleå Tekniska Universitet. Uppsatsen klargör vilka faktorer som avgör en användning eller icke-användning av Case-teknologin. Case-teknologin möjliggör ett ingenjörsmässigt närmande till mjukvaruproduktion och systemutveckling genom att tillföra nödvändig systematik, standardisering, automation och kvalitetssäkring. Ett stort antal undersökningar är gjorda genom årens lopp med syfte att förstå och förklara varför det som teoretiskt borde vara lösningen på problemet med undermåliga system inte tycks ha blivit detta. Resultatet av undersökningen tyder på att de variabler som Prekumar och Potter kom fram till i sin forskningsmodell ? relativa fördelar, kostnad, komplexitet, kompabilitet, produkt förespråkare, stöd från ledningen och operativ expertkunskap har störst påverkan på användningsbenägenheten av Case-teknologi..

The purpose with this report is to illuminate the construction solutions and the deformations that could exist in medieval parish stone churches. But also to increase the writers understanding how activity forces effect the construction of the churches. With help from literature and a practical study, containing three churches the writers have collected the material that the conclusions and discussions are built upon in this report. The construction of the churches consists of three parts, the wall, the roof and the vault. The construction solutions are similar in the churches disregard of the roof, where the roof trusses are different.