This report summarizes the thesis study carried out at Scania CV AB. The study presents design optimization of an interior permanent magnetic (IPM) synchronous machine. A parameterised Matlab tool was developed in order to serve the optimization routine. In this routine, multiple IPM geometries are dynamically generated and analyzed using the finite element method (FEM) software Flux 2D. Using the Secant method, algorithms to estimate the optimum current and control angle throughout the speed range both below and above base speed, were developed and integrated with the Matlab tool to perform design optimization towards the drive cycle. The genetic algorithm available in the Matlab’s global optimization toolbox has been utilised for the multi-objective optimization setup. / Denna rapport sammanfattar examensarbetet som genomförts på Scania CV AB. Studien presenterar en designoptimering av en permanentmagnetiserad (IPM) synkronmaskin. Ett parametriserat Matlab-verktyg för optimeringar utvecklades for att dynamiskt generera geometrier för att utföra simuleringar med hjälp av FEM-programvara (Flux2D®). Med hjälp av Sekant-metoden utvecklades och integrerades algoritmer för att estimera den optimala strömmen och styrvinkeln i hela varvtalssområdet, både under basvarvtal och i fältförsvagningsområdet. Med hjälp av Matlab-verktyget kunde sedan designoptimering för en given k¨orcykel utföras. Den genetiska algoritmen som finns tillgänglig i Matlabs globala optimeringsverktygslåda har använts för det multi-objektiva optimeringsprogrammet.

Within the military there is great need for reliable communication between vehicles. During the planning and construction of a military RIB, Rigid-hulled Inflatable Boat, it is important to design an efficient antenna system that does not deteriorate out of disorder. It must also be ensured that the antennas transmitted power does not stay in the RIB boat. We have been given assignment to model and simulate a proposed antenna system and assess which tool is best suitable for the task. To analyze the antenna system we will look at the radiated electrical field together with the reflectionand EMC properties. The tool that we choose to use is a software called EMPro produced by Keysight Technologies. In this program we will create 3Dstructures for each individual object, the boat, the three antennas and the seawater. It’s also important to include each objects properties concerning material, so that they correctly reflect the reality. We are covering a broad spectrum with our antennas reaching from 1.6-30MHz, 30-88MHz and 100512MHz. The resulting simulation verifies that electromagnetic field would be powerful enough and that the antennas would not affect each other with the proposed placement. We could also confirm that our antennas reflected an inordinate amount of power but with cause that our models were not an exact replica of the antenna. The software EMPro is a suitable tool for this kind of projects concerning modeling and simulating antenna systems.Within the military there is great need for reliable communication between vehicles. During the planning and construction of a military RIB, Rigid-hulled Inflatable Boat, it is important to design an efficient antenna system that does not deteriorate out of disorder. It must also be ensured that the antennas transmitted power does not stay in the RIB boat. We have been given assignment to model and simulate a proposed antenna system and assess which tool is best suitable for the task. To analyze the antenna system we will look at the radiated electrical field together with the reflectionand EMC properties. The tool that we choose to use is a software called EMPro produced by Keysight Technologies. In this program we will create 3Dstructures for each individual object, the boat, the three antennas and the seawater. It’s also important to include each objects properties concerning material, so that they correctly reflect the reality. We are covering a broad spectrum with our antennas reaching from 1.6-30MHz, 30-88MHz and 100512MHz. The resulting simulation verifies that electromagnetic field would be powerful enough and that the antennas would not affect each other with the proposed placement. We could also confirm that our antennas reflected an inordinate amount of power but with cause that our models were not an exact replica of the antenna. The software EMPro is a suitable tool for this kind of projects concerning modeling and simulating antenna systems. / Inom militären finns stort behov av pålitlig kommunikation mellan fordon. Vid konstruktion av ett småfartyg i militärtoch bevakningssyfte är det viktigt att designa ett välfungerande antennsystem som inte försämras utav störningar, det ska även ses till att antennernas utsända effekt inte fastnar i småfartyget. Vi har fått en ritning av hur antennplaceringen är planerad, denna rapport går ut på att verifiera dess funktionalitet samt hitta en mjukvara som kan användas för att verifiera olika antennsystem. För att bedöma antennsystemet kommer denna rapport att undersöka att dess elektriska fält samt reflektionsoch EMC egenskaper, en uppgift som kan lösas med programvaran EMPro (Keysight). I programvaran skapas en 3Dstruktur som innehåller småfartyget, dess 3 stycken antenner samt omfattande havsvatten. Här tas hänsyn till objektens materialegenskaper, antennernas jordning samt de frekvenser antennerna arbetar på, 1.6-30MHz, 30-88MHz samt 100-512MHz. Simulering av systemet gav positiva resultat kring antennsystemets elektromagnetiskafält, antennerna kommer inte heller att störa varandra. Antennerna som vi har modellerat reflekterar orimligt mycket effekt, detta bortser vi från då vi inte haft tillgång till exakt avbildning av antennerna. EMPro är ett verktyg som är lämpligt att använda i detta samt liknande projekt. Dock krävs det att en kraftig dator finns tillgänglig då simuleringar av stora antennsystem baseras på stora uträkningar, som generellt tar lång tid.

Due to the increase of rotor size in horizontal axis wind turbine (HAWT) during the past 25 years in order to achieve higher power output, all wind turbine components and blades in particular, have to withstand higher structural loads. This upscalingproblem could be solved by applying technologies capable of reducing aerodynamic loads the rotor has to withstand, either with passive or active control solutions. These control devices and techniques can reduce the fatigue load upon the blades up to 40% and therefore less maintenance is needed, resulting in an important money savings for the wind farm manager. This project consists in a study of load control techniques for offshore wind turbines from an aerodynamic and aeroelastic point ofview, with the aim to assess a cost effective, robust and reliable solution which could operate maintenance free in quite hostile environments. The first part of this study involves 2D and 3D aerodynamic and aeroelastic simulations to validate the computational model with experimental data and to analyze the interaction between the fluid and the structure. The second part of this study is an assessment of the unsteady aerodynamic loads produced by a wind gust over the blades and to verify how a trailing edge flap would influence the aerodynamic control parameters for the selected wind turbine blade. / På grund av ökningen av rotorstorleken hos horisontella vindturbiner (HAWT) under de senaste 25 åren, en design som har uppstod för att uppnå högre effekt, måste alla vindkraftkomponenter och blad stå emot högre strukturella belastningar. Detta uppskalningsproblem kan lösas genom att använda metoder som kan minska aerodynamiska belastningar som rotorn måste tåla, antingen med passiva eller aktiva styrlösningar. Dessa kontrollanordningar och tekniker kan minska utmattningsbelastningen på bladen med upp till 40 % och därför behövs mindre underhåll, vilket resulterar i viktiga besparingar för vindkraftsägaren. Detta projekt består av en studie av lastkontrolltekniker för havsbaserade vindkraftverk ur en aerodynamisk och aeroelastisk synvinkel, i syfte att bedöma en kostnadseffektiv, robust och pålitlig lösning som kan fungera underhållsfri i tuffa miljöer. Den första delen av denna studie involverar 2D- och 3D-aerodynamiska och aeroelastiska simuleringar för att validera beräkningsmodellen med experimentella data och för att analysera interaktionen mellan fluiden och strukturen. Den andra delen av denna studie är en bedömning av de ojämna aerodynamiska belastningarna som produceras av ett vindkast över bladen och för att verifiera hur en bakkantklaff skulle påverka de aerodynamiska styrparametrarna för det valda vindturbinbladet.

Light Detection and Ranging (Lidar) is a kind of active sensor that emits a laser pulse and primarily measures the time of flight of the returning pulse and uses it to construct a 3D point cloud of the scene around the lidar sensor. The constructed point cloud is an essential asset for the control of autonomous vehicles, and especially today, an essential basis for the training of autonomous vehicle control models. However, it remains time-consuming, high-risk and expensive to acquire the amounts of data necessary to train the rather complex modern control models. As such, generating the point cloud through simulations becomes a natural solution. Yet, many lidar simulations today produce ideal point clouds, corrected only by random noise, without considering the physical reasons behind the imperfections visible in real lidar point clouds. The aim of this study was to investigate real-time simulation models for disturbances that may cause imperfections in lidar data. From a base investigation of lidar, disturbances were found, models were investigated and finally a real-time implementation of Atmospheric Effects and attenuation from Beam Divergence was evaluated. It was found that the implemented models could produce physically accurate lidar point placement while keeping the computational time low enough for real-time evaluation. However, to achieve correct separation of target hit rates under Atmospheric Effects, as high as 34% of the points had to be dropped. Additionally, the intensity of the return points could not be properly verified. From these results it can be concluded that, with additional verification and adjustment, the presented models can achieve good results for evaluation in real-time. The results of this study thus serve as a support for future developments of realistic real-time lidar simulations, for use in development of autonomous vehicle control models and implementation of digital twins.

Current diabetes care practices provide the same amount of care to everyone, regardless of individual needs. The high coverage of continuous glucose monitors (CGMs) in the Type 1 Diabetes (T1D) population can facilitate the implementation of need-based care, which could potentially largely benefit both clinics and patients. This master’s thesis develops and evaluates a simulation model to explore patient flow in T1D clinics using need-based booking, as well as a user interface for running the simulation and collecting output data. The model also serves as a tool for optimizing input parameters for this system. Utilizing Agent-Based Modeling (ABM) and Discrete Event Simulation (DES), the study includes basic validation to ensure reliability. Findings suggest that the model has been perceived as useful as a tool to discover suitable configurations of a need based booking system when used in a T1D clinic, as well as to communicate and visualise potential benefits and effects of using a need-based system for T1D patients. / Nuvarande diabetesvårdsmetoder erbjuder samma vård till alla, oavsett individuella behov. Den höga täckningen av kontinuerliga glukosmätare (CGMs) i befolkningen med Typ 1-diabetes (T1D) kan underlätta införandet av behovsstyrd vård, vilket potentiellt kan gynna både kliniker och patienter i stor utsträckning. Denna masteruppsats utvecklar och utvärderar en simuleringsmodell för att utforska patientflödet i T1D-kliniker med behovsstyrd bokning, samt ett användargränssnitt för att köra simuleringen och samla in utdata. Modellen fungerar också som ett verktyg för att optimera inmatningsparametrar för detta system. Genom att använda agentbaserad modellering (ABM) och diskret händeslestyrd simulering (DES) inkluderar studien grundläggande validering för att säkerställa tillförlitlighet. Resultaten tyder på att modellen har uppfattats som användbar som ett verktyg för att upptäcka lämpliga konfigurationer av ett behovsstyrt bokningssystem i kliniker för T1D, såval som kommunicera och visualisera potentiella fördelar och effekter av att använda behovsstyrda bokningssystem för patienter med T1D diabetes.

This bachelor thesis, developed at the Department of Mechanical Engineering, Linaeus Univesity, targets the enhancement of fire extinguisher accessibility and durability on forest machinery for Rottne Industries AB. The study responds to the basic limitations in traditional fire extinguisher storage methods within the forest machinery sector, where current designs fail to provide sufficient robustness and accessibility in forest environments. These challenges are mixed with the physical demands and potential hazards of forest operations.  Through a systematic review of safety measures, this research introduces an innovative concept for a universal fire extinguisher holder adaptable across various models of forest machinery at Rottne Industries AB. The project has a structured product development process, advancing through stages from theoretical design and optimization to 3D CAD modeling and simulation. The resulting design enhances both the structural integrity and functional accessibility of fire extinguishers, significantly improving response capabilities during fire emergencies. This thesis combines advanced engineering principles with appropriate design strategies to deliver a solution that not only increases the accessibility of fire extinguishers but also enhances their durability under operational stresses typical in forestry environments. The findings promise to elevate fire safety standards in forest operations, potentially standardizing fire safety protocols across the forestry sector and specifically advancing the safety agenda of Rottne Industries AB.

Valuing Intellectual Property assets is increasingly critical in today’s economy, where intangible assets constitute a significant portion of business value. This thesis addresses the challenges inherent in the IP valuation process, particularly the subjectivity and variability associated with different IP types and valuation methodologies. It proposes a new way to value IP assets, by building upon existing disaggregation methods, and by introducing the IP-heaviness classification system. The study aims to develop an objective valuation model for IP assets by introducing the IP-heaviness classification system. The goal of the model is to estimate the range of IP Contribution (IPC) to company value across different industry groups. Our study employed Kernel Density Estimation and Monte Carlo Simulation to analyze the dataset and generate a larger data sample. We then developed the IPH classification system, which categorizes industries based on their reliance on IP as a value contributor, grouping them by similar levels of IP dependence. This structured approach allows for a preliminary estimation of the IP contribution for each group, providing a standardized framework for IP valuation. Each IPH group was assigned its own probability density curve to represent its potential IPC value. Ultimately, our model produced confidence intervals for each IPH group, offering a reliable measure of the IP contribution within each category. Our findings reveal significant variability in the impact of IP on company value across different industries. Higher IPH groups, representing industries with substantial IP reliance, show a greater proportion of their value attributed to IP assets. Conversely, lower IPH groups, with less reliance on IP, exhibit lower IP contributions. The IPH classification system addresses the challenges of traditional IP valuation methods by providing a more objective and transparent approach. It enhances the comparability of companies within and across IPH groups and reduces subjectivity in the valuation process.