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.

The thesis evaluates a new kind of bearing arrangement in a traction motor that ABB hasdeveloped. Since the arrangement is designed in a new and innovative way it needs to beevaluated to see if it is safe to use. In today?s traction motors, bearings with a big internalclearance (C4-clearance) are used. The basic idea of the new arrangement is to reduce the fitsbetween the bearing and shaft/house.

I detta examensarbete undersöks hur informationstavlor vid Volvo PV AB, motor, Östra fabriken, Skövde påverkar montörerna som arbetar där i deras arbete. Uppdraget som undersökaren fick av Volvo var att undersöka vilken betydelse de informationstavlor som sitter vid varje modul/arbetsstation spelar i det dagliga arbetet. De här informationstavlorna visar hur många motorer som ska produceras per vecka. Metoden som användes i undersökningen var en kvalitativ intervjubaserad undersökning, med 24 deltagande montörer.Resultatet visar att den information som fås via tavlorna är av stor vikt och behövs i någon form. Det finns dock vissa betydande brister som påverkar montörerna negativt på olika sätt.

Transient driftförhållande blir allt mer intressant för forskare och tillverkare och de största svårigheterna är att minska emissionerna utan att påverka bränsleförbrukningen eller motorns respons vid gaspådrag negativt. Huvudmålet med det här examensarbetet var utvärdera olika metoder för att mäta NOx och antal partiklar med hög tidsupplösning för att möjliggöra studier av emissioner under transient driftförhållande.I arbetet har en Horiba MEXA 120NOx NOx-sensor studerats med avseende på linearitet, mätsäkerhet och responstid. Försök för att öka noggrannheten har också gjorts genom att kompensera för varierande skalfaktor för utsignalen och för responstiden.Ett spädsytem har arbetats fram för att ge hög tidsupplösning och god repeterbarhet. I detta ingick en Rotating Disc spädare och en två-stegs Dekati spädare. Spädsystemet var kopplat till en TSI Ultrafine Condensation Particle Counter 3025 A (CPC) och var nödvändigt för att hålla koncentrationen inom det mätbara området.

This report will outline a proposal for the improvement of the baggage sorting facility at Arlanda airport. Swedavia is a state owned company group that operates, owns and develops airports in Sweden. One of their main roles is to create accessibility needed to facilitate and streamline the work at the airport.Swedavia is constantly working to develop new solutions and enhancements that will help to standardize and automate the work at airports without major impact on climate and above all adapt these solutions to work.The project has been aimed to identify and isolate the problem at the check-in counter, investigate the possibility of setting a speed control on the DC motor driving the luggage conveyer belt at the check-in desk so that the luggage does not lose tracking already there, as well as evaluate the new sorting systems planned to be introduce in the upcoming refurbishment of the sorting area.To determine the parameters that are used to regulate the speed of the baggage conveyor belt, information about the inputs and outputs that participated in the process was gathered. Information was collected both practically and theoretically. Process was followed and monitored by the supervisor of the company, and a theoretical study was done separately on my own.

In a society where adults set the conditions for children?s play and generate modern and at times technically advanced products, fundamental characteristics like simplicity, opportunities for motor skills training and learning tend to be neglected. Owing to this, the Linköping-based company Time In wants to introduce a new multifunctional product, which differs from other products in shape and function and lives up to the often overlooked, basic characteristics in a toy.With Time In as the assigner, the purpose of this master thesis has been to use simple means to produce a "learning by playing" concept. Since Time In sells toys and products suitable for children in nurseries and preschools, the development of the products has therefore included a study of nursery and preschool environments.The thesis has been carried out within the Product Design subject area at the Department of Management and Engineering at Linköping University. Concept development has been done in three phases: the Preparation phase, the Design phase and the Presentation phase.

In my opinion, the city is a place fit as much for children as for grown-ups. I have noticed, however, that this is not a view shared by everyone. Does not the urban space belong as much to children as to other people? Yes, of course. Today and in the future most people will live and grow to be adults in cities. I would even take it as far as to say that without children, there will be no real city.

Denna rapport är ett examensarbete utfört av Per Jonsson, student vid Karlstads Universitet. Examensarbetet omfattar 22,5 högskolepoäng och är ett obligatoriskt moment inom högskoleingenjörsprogrammet i ämnet maskinteknik.   Företaget Trollspeed tillverkar högeffektiva racingmotorer för användning av racingteam på elitnivå. Stora turboaggregat samt tillhörande utrustning sätts samman med specialbyggda avgasgrenrör för att uppnå största möjliga effektuttag. Tillsammans bildar dessa sammansatta delar en hög vikt och måste därför stagas upp.   Detta arbete handlar om att ta fram en ny lösning för uppstagningen, då dagens lösning leder till oundviklig spänningspåverkan i grenröret som bidrar till att sprickbildningar uppstår. Projektet är indelat i två delar där första delen omfattar framtagning av ett mätverktyg för analysering av rörelse samt kraftpåverkan hos grenröret. Framtagningen av mätverktyget resulterade i en mätskala med visare för visualisering av rörelser och monterade lastceller för analysering av kraftpåverkan.

The purpose of this study is to investigate how twelve middle school teachers use educational tools and what influences their choice of educational tools in Swedish language writing instruction. To answer this purpose, three research questions were formulated: What does writing instruction look like for middle school students according to the teachers in the study? What influences teachers' choice and use of educational tools in writing instruction? What opportunities and challenges do teachers experience in Swedish language writing instruction when using different educational tools? Twelve teachers from variously sized municipalities and with different experiences participated in the study through purposive sampling and convenience sampling. The chosen method is qualitative semi-structured teacher interviews. To analyse the results, this study employs analytical tools from the sociocultural perspective, using concepts such as mediation, appropriation, the zone of proximal development, and scaffolding. The results show that both analogue and digital tools are used in the teachers' writing instruction. The choice of tools should be based on pedagogical considerations, with an emphasis on social interaction and collaboration during the learning process.

The purpose of this paper is to examine how the target to convert the Swedish military aviation industry towards working within the civilian sector was planned and implemented parallel to the target of building a world-class military aircraft. A number of Government bills have been studied, bills directly connected to the JAS-project as well as bills dealing with civilian project ?s for the military aviation industry. The first group includes bills dealing with the JAS-project ?s role in the overarcing defence policy, as well as the Government ?s bill specifying the guidelines for the JAS-project.

Stockholm city has recently raised its ambitions for bicycle traffic, the goal is to achieve a larger andsafer bicycle traffic. But cyclists are more vulnerable on the roads than other vehicle users because of the lack of protection. This means that a large proportion of road safety for cyclists is based on the design of the traffic environment. Since most serious bicycle accidents are those that occur in conflict with motor vehicles, and the majority of these accidents occur at intersections, these areas are of great importance forcyclist?s safety.The  purpose  of  this  paper  is  to  highlight  bicycle  accidents  at  intersections  and  to  suggest improvements  in three accident-prone junctions  in Stockholm.  This is  achieved  by  the study of accident statistics, literature and finally three case studies.The literature study focused on cyclists, traffic safety and traffic safety measures.

This report covers a product development project conducted as Bachelor of Science thesis forthe Innovation & design engineer program at Karlstad University.The assignment was supplied by MMB Consulting, Kristinehamn. The purpose of this projectwas to find an alternative way of shaping wire-net insulation mats. This insulation product isused for fire and thermal insulation of technical installations. The insulation consists of stoneor glass wool with a sewn on steel wire netting on the out facing side. This netting has thepurpose to enable fastening to e.g.

Background Anesthesia-related deaths are common in dogs, especially in the postoperative period, in compare to humans. This study aims to describe and elucidate the qualities of the postoperative care for dogs in Sweden. Method To investigate the postoperative care, a qualitative study was made by interviewing personnel in the animal health care sector. The primary information from the interviews was analyzed in a qualitative manor and a few distinguished qualities came forth. Results These qualities describe the postoperative care and include preventive activities, postoperative activities, monitoring and communication. A variation in regards to the results was seen between the interviewed.

This report focuses on the upper slit. The upper slit is located between the impeller andthe drive unit. The slit design depends on pump type and application. However it isuncertain why the design varies, The purpose of this report is to clarify why the designvaries and to recommend an improved slit design.A research has been done; information was gathered from interviews, but also fromsearching of databases and studies of drawings, reports and documents. The originalpurpose of the slit was to prevent twining around the driveshaft, and prevent dirt fromentering the cooling system.

As a part of Göteborg Energi?s work towards a smarter electric grid, the company has chosen to investigate the possibilities of automation in their middle voltage grid. In Europe, there are example cases where these technologies already are installed which many articles on the CIRED conference 2011 proved. Netcontrol Oy in Finland has, together with Tekla, created an automated SCADA system that Vattenfall in Finland today uses. The grid mainly consists of 10 kV open loop fed city grid and this automation is mainly designed for this type of grid.