Relevant bibliographies by topics / Mekatronik och systems engineering / Dissertations / Theses
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Dissertations / Theses on the topic 'Mekatronik och systems engineering'

Author: Grafiati
Published: 4 June 2021
Last updated: 8 February 2022

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1

Ortner, Jens, and Erik Ågren. "Automated Hydroponic system." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-264438.

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This report includes research into how to automate a small scale system for hydroponics. Hydroponics is a growing technique which features a soil-less environment were the plants roots are exposed to a nutrient-enriched water solution. The research focused mainly on how to regulate the pH and the level of nutrient in the water solvent and finding a system to automate that process. In the research fully grown basil plants were used as test specimens, with the plants roots submerged in a water solvent. The water solvent had sensors that were connected to a micro controller making it possible to
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GHATTAS, HELEN. "Managing complex product development projects : An analytical framework for complex product development." Thesis, KTH, Industriell Management, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-191093.

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Under de senaste åren har produkterna blivit mer invecklade beträffande anslutningen, prestanda och funktionalitet. Därför är syftet av denna studie att undersöka hur komplexa system utvecklas och leds genom att genomföra fallstudie på olika svenska företag som utvecklar mekatroniska och cyber-fysiska system. Resultatet av denna studie har lett till identifieringen av många utmaningar som de undersökta företagen har och som i sin tur har lett till framställningen av ett analytiskt ramverk som diskuterar hur och vad man bör göra för att utveckla komplexa produkter på ett effektivt sätt, så att
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VALKO, ABEL. "Relay Attack Resistant Passive Keyless Entry : Securing PKE Systems with Immobility Detection." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-279839.

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A significant security risk of modern vehicles is their vulnerability to relay attacks, due to challenge-response methods, such as those employed in Passive Keyless Entry (PKE) used by most commercial cars, being inherently exposed. This class of attacks are where communication between a vehicle and its key is relayed by an attacker over long range - thereby bypassing any encryption and unlocking the vehicle without requiring direct access to the key. While a multitude of defenses have been proposed in recent years, many lack either robustness or practicality. Any viable system will likely hav
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Hermansson, Hanna, and Louise Lundblad. "Automatic irrigation system for plants." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-264445.

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The purpose of this project was to develop an automatic irrigation system for plants. It is beneficial to have plants indoors. In addition to their air-purifying qualities, they have been proven to increase the productivity of employees at workplaces, as well as decrease the amount of sick leave. Three research question were investigated: how much energy the system requires and if it is possible to replace the energy source with an alternative energy source, how well the system stabilises and how a wireless regulation can be implemented. The final design consisted of a mictrocontroller which c
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Nordqvist, Mathias, and Olle Svensson. "Electrification of valve system." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-264516.

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This report is going to investigate the possibility to save energy by converting a valve opening mechanism in a waste disposal system from a pneumatic system to an electric system. To power the system, which mainly consists of an electric actuator and a valve control module, a solar panel system was designed. The valve system was controlled by the lightweight messaging protocol MQTT. To be able to choose an electric actuator the needed force was measured and data regarding maximal stroke was taken from the data sheet of the existing setup. For developing an optimal solar panel system a program
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CALMINDER, SIMON, and CHITTUM MATTHEW KÄLLSTRÖM. "Object Tracking and Interception System : Mobile Object Catching Robot using Static Stereo Vision." Thesis, KTH, Mekatronik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-233135.

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The aim of this project is to examine the feasibility and reliability of the use of a low cost computer vision system to track and intercept a thrown object. A stereo vision system tracks the object using color recognition and then guides a mobile wheeled robot towards an interception point in order to capture it. Two different trajectory prediction models are compared. One model fits a second degree polynomial to the collected positional measurements of the object and the other uses the Forward Euler Method to construct the objects flight path. To accurately guide the robot, the angular posit
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Hasp, Frank Alexander, and Morgan Tjernström. "Construction and theoretical study of a ball balancing platform : Limitations when stabilizing dynamic systems through implementation of automatic control theory." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-264486.

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Control theory and its applications are crucial when operating within the area of dynamic systems. Compensating for disturbances and external actions imposed on a given system being inherently unstable or semi-stable. Through the physical construction of a apparatus as a demonstrator of the theory further comparing the factual physical and computer simulated results derived from Newtonian mechanics. To enable comparison, designing a satisfactory controller capable of fulfilling the requirements set for the system is necessary. With regards to apparatus and control, the introduction of a propor
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Sadoon, Sarah. "Mätsystem för en säkrare vandring." Thesis, Högskolan i Halmstad, Akademin för informationsteknologi, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-36364.

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Idag finns det många böcker och utrustningar för att bidra till en säker färd i vildmark, men marknaden inom området har en stor potential för utveckling. Projektet har tagit fram två prototyper för att mäta vattenintaget vid en färd i vildmark med varningssignaler som visar när vattentillståndet är kritiskt och för att påminna användare att dricka vatten. Prototyperna har jämfört och slutsatser har dragit för vilken prototyp som är mest optimal för ändamålet.<br>Today there are many books and equipment that contribute to a safe journey in the wildness. But the market still has a great potenti
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Röing, Jacob, and Martin Zheng. "Automatic Sound Level System : Constant volume at all times." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-264488.

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Studies have shown that music has plenty of positive effects on performances in working environments. The purpose of this project was to reap those benefits by developing a prototype that could automatically adjust the volume of a speaker. The prototype was also able to measure the total sound level in the surrounding environment. It would then regulate the speaker’s sound level in accordance with the measured sound and a desired volume set by the user. The main focus was to measure, filter and calibrate sound and to develop a regulatory system that could control the volume of the sound system
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Ekström, Sebastian. "Bärbar sensorhandske med force feedback för manövrering av en humanoid robothand - : Implementering med monterade sensorer och motorer för styrning och känsel." Thesis, Linnéuniversitetet, Institutionen för fysik och elektroteknik (IFE), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-86116.

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The goal of this thesis was to create a sensors glove with force feedback feeling when operating a humanoid robot hand. The development covered multiple areas such as mechanics, electronics and programming. The final product gave the user control over three fingers of a humanoid robotic hand. In the case where the robotic hand comes in contact with an object the user's finger movement is limited according to the pressure the robotic hands fingers exposes the object to.<br>Rapporten beskriver arbetet för framtagandet och skapandet av en sensorhandske med inbyggd force feedback funktion som därm
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Sjöberg, Mikael, and Jonas Xu. "A.D.D : Autonomous Drink Dispenser." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-264511.

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The purpose of this report was to evaluate the feasibility of an autonomous drink dispenser where it can complement the waitstaff in their many duties. The prototype can accurately dispense a wide variety of drinks without the intervention of a human operator. The focus of the project was to pour a wide variety of drinks as accurately as possible. This can be achieved without the need for trained staff through automation. Many different components were required in order to make the prototype as consistent and safe as possible. It was discovered that so many components negatively affected the e
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MELLO, SIMON. "VATS : Voice-Activated Targeting System." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-279837.

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Machine learning implementations in computer vision and speech recognition are wide and growing; both low- and high-level applications being required. This paper takes a look at the former and if basic implementations are good enough for real-world applications. To demonstrate this, a simple artificial neural network coded in Python and already existing libraries for Python are used to control a laser pointer via a servomotor and an Arduino, to create a voice-activated targeting system. The neural network trained on MNIST data consistently achieves an accuracy of 0.95 ± 0.01 when classifying M
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Ström, David, and Carl Jensen. "Compact safety system for automatic flagpole : Flow sensor anemometer." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-264448.

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Automating tasks and processes are becoming more and more common in both corporate and everyday life. The aim of this project is to assist the company Hotswap in the development of a safety system for an existing automatic flagpole. The safety system should be able to monitor wind velocity and, optionally, wind direction as well as communicate the data to the flagpole’s main control unit. The thesis describes and discusses the different possible mechanisms, solutions for measuring wind, and a possible implementation. A method for measuring wind velocity by utilizing an FS5 thermal mass flow se
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Lind, Henrik, and Jacob Janssen. "The Irrigator : Autonomous watering robot for homes." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-264479.

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Inspired by the trend of automated homes, this thesis examines the possibility of designing a cheap and autonomous robot that will water plants effectively at home. Many existing solutions are cumbersome and not sufficiently effective, often due to flexibility and risk of over watering. Therefore this thesis examines a wheel based approach. In order to achieve the best possible results, the soil water content was measured, as opposed to a time-based approach where the user sets a timer to decide how often the plants are watered. This thesis also examines the advantages, and disadvantages of a
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Viberg, Erik. "Implementation och utvärdering av kommunikation mellan smartphone och in flight entertainment systems." Thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-181935.

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In this thesis an implementation of an Android application is made. The application is able to run on both an Android based In Flight Entertainment system screen, as well as on an Android smartphone. When two instances of the application is run on different systems, the two application instances are able to communicate with each other via UDP or Bluetooth. The implementation of the communication is evaluated. For implementations demanding high goodput, UDP is better suited than Bluetooth which is consistent with results of previous studies. For implementations where response times are more imp
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Hinas, Toni, and Isabelle Ton. "Recommender Systems for Movie Recommendations." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-239376.

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Recommender systems are becoming a large and important market, with commerce moving to the internet and the ability to keep a larger stock of products, one of the biggest hurdles is to organize and show the right product to the right customer. Recommender systems aim at tailoring their products based on their customer need, by predicting how much a user would like a particular product. The recommender systems implemented in this project are within Collaborative filtering (CF) and Content-based filtering (CBF), with a final hybrid system based on combining the systems of CF and CBF. The aim is
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Frost, Emelie. "Resynchronisation of Islanded Power Systems." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-287355.

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The electricity demand and need of renewably produced electricity has increased the interest in locally produced electricity, also called distributed generation. The increase of distributed generation increases the risk of islanding, a state when a part of the grid has been electrically isolated. When an island has formed, the danger of unsynchronised reclosing arises. This thesis investigated the probability of sustained islanding operation and the prospect of grid resynchronisation for a safe reconnection. A MATLAB/Simulink model of a 55 kV grid owned by Ellevio was analysed and a Single Mac
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Ling, Jonathan, and Gustav Lindstrand. "Optimizable Hydroponic Plant Incubator : Building a hydroponic plant incubator with a highly optimizable environment." Thesis, KTH, Mekatronik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-295805.

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This report investigates how to build a compact, optimizable and at the same time user friendly hydroponic systemfor growing plants as efficiently as possible. Hydroponics grows plants using water with dissolved nutrients instead of soil, allowing faster and more efficient growth.The focus has been on the implementation and the usability of such a system, centering around monitoring and to some degree controlling important parameters for growth such as humidity, air temperature, nutrition concentration and light intensity, colour and exposure time. The plant is enclosed in a confined space wit
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Hjelm, Alexander. "Security and Privacy for Modern and Emerging Mobile Systems." Thesis, KTH, Skolan för teknikvetenskap (SCI), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-210854.

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The fundamentals of secure systems can be presentedas the three cornerstones: authentication (trustworthinessof senders), integrity (inability to alter messages) and confidentiality(inability to read messages for anyone except theintended recipient). In this project, an android application hasbeen programmed by the author with the purpose of sendinggeographical data over a bluetooth connection in a secure peerto-peer manner. In the application, the three goals were metprimarily through the use of certificate validation, encryption anddigital signatures. The final application features a user-in
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Larsson, Ida, and Jakob Jansson. "Jack the Jumping Robot : Pinion-based springpowered jumping robot." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-264480.

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This bachelor thesis will demonstrate and explain the building of a jumping robot. This work took place during the Spring semester of 2019 and was finished in May. The scope was to build a foot sized robot that can regulate jumping force and angle, while maintaining the ability to land safely and with its right side up. This thesis required that the robot made use of sensors and microcontrollers. The electronics used for this robot was an Arduino UNO, an IMU and several servos. The code behind the jump was based on the switch case statement model. Jack was built with three subsystems in mind:
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Lindström, Jonas, and Måns Nilsson. "Badminton Training Robot : Badminton Buddy." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-264472.

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Badminton is hard to practice alone and contemporary practice machines are either expensive or too simple to be useful. This bachelor thesis revolves around the mechanical, electrical, and software design of a badminton practice machine with an automated feeding mechanism and a firing mechanism capable of shooting to different locations on the badminton court. The resulting product was an aesthetically pleasing robust machine with a 91% reliability and an accuracy of less than one meter.<br>Badminton är svårt att träna ensam och träningsmaskiner på marknaden idag är antingen dyra eller för sim
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Holmberg, Anthony, and Nils Lundqvist. "WoodWinder : MIDI Controlled Recorder." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-264499.

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WoodWinder is a machine whose job is to interpret the signal from a Musical Instrument Digital Interface (MIDI) keyboard and make a recorder play accordingly. This was performed by simulating the two human traits needed in order to play the recorder: providing air flow for the mouthpiece and fingers to cover its holes. The air flow was provided by a custom made centrifugal fan and directed through a separation chamber which determined how much air was allowed to travel through the mouthpiece and how much was driven out through an exhaust. The purpose of the separation chamber was to simulate t
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Petek, Martin. "Modelling of passive intermodulation in RF systems." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-284253.

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Modern communication systems are increasing in complexity, power and dynamicrange. As a result, weaker signals can be detected which improves rangeand quality of service. However, this also results in greater sensitivity to spurioussignals which can impact system performance. One of the mechanismsthat spurious signals can be created is by mixing that occurs by the nonlinearbehavior of components. These components are typically active, such astransistors and diodes. Recently, there has been increased focus on studyingnonlinearities of passive components. These are usually considered linear ando
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Nobliá, Matilda, and Christian Ryan. "Contamination Event Detection in Water Distribution Systems." Thesis, KTH, Skolan för elektro- och systemteknik (EES), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-214698.

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In any society, making sure that its citizens havea clean water supply is a fundamental issue. By modernizingthe way water distribution systems (WDSs) are monitored andcontrolled, the impact of contamination can be maintained andminimized. By using sensors that monitor relevant physicalparameters, a system that detects contamination and limitspopulation exposure can be designed. To achieve this, the workpresented in this report is focused on three main topics.Firstly, parameters for determining water quality are examined.This is the basis for choosing relevant sensors. Secondly,a study of cont
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Höglund, Emmy, and Kim Lin. "Impact of Occupancy Counters on HVAC Systems." Thesis, KTH, Skolan för elektro- och systemteknik (EES), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-214703.

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To improve future Heating Ventilation and AirConditioning (HVAC) systems’ energy efficiency, a reliable wayto determine occupancy is needed. The answer lies within theoccupancy counters. In this project the goal was to study whichsensor would be most suited for detecting occupants, and proposea new application of a combination of occupancy counters andestimator that would be the most suited for determining thenumber of occupancy. The project will cover a literature studyof hardware-based occupancy counters and a software-basedoccupancy estimator, compare their strengths and weaknesses,and seve
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Bjelkemyr, Marcus. "System of Systems Characteristics in Production System Engineering." Doctoral thesis, Stockholm : Skolan för industriell teknik och management, Kungliga Tekniska högskolan, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-10617.

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Falquier, Rene. "Longitudinal Flight Mechanics of Paraglider Systems." Thesis, KTH, Flygdynamik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-261698.

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This project outlines a cost-effective numerical simulation method for the analysis of the longitudinal mechanics of paraglider systems. It is built on static stability methods for the analyses of low subsonic aircraft, non-linear lifting line methods for aerodynamic parameterization, and frequency domain analysis methods derived from system theory. Paragliders possess a glide polar in the range of ≈ 25-60 km.h−1 and display underdamped dynamic responses dominated by a long-period mode. The simulation results for performance and dynamic response are qualitatively valid relative to experimental
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Grahn, Pernilla. "Reverse Engineering : En jämförelse mellan företag och forskare." Thesis, University of Skövde, School of Humanities and Informatics, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-854.

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<p>Användning av mjukvaruverktyg när reverse engineering utförs är ett måste för att få ett användbart resultat enligt Hainaut (2002). Kudrass m fl (1997) visar på brister som kan uppstå när mjukvaruverktyg används. Gemensamt för de forskare som har studerats i detta arbete är att de hävdar att företag saknar kunskap för att utföra reverse engineering med mjukvaruverktyg. Har forskarna rätt i att det saknas kunskap eller har företagen mer kunskap än vad forskarna tror? Då dessa forskare har en klar koppling till tillverkning av mjukvaruverktyg så är eventuellt inte deras påstående opartiska oc
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Zhou, Linghui. "Polar Codes for Identification Systems." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-232176.

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Identication systems are ubiquitous, for example, biometric identication systemswith ngerprints and Face IDs, etc. Basically, the identication problemconsists of two steps. The enrollment phase where the user's data are captured,compressed and stored, for example taking the ngerprint or capturing some importantfeatures of your face. In the identication phase, an observation, yourngerprint or your face, is compared with the stored information in the databaseto provide an armative answer. Since the system involves many users, bothstoring and searching for the correct user is challenging.This pro
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Martín, del Campo Barraza Sergio. "Towards autonomous condition monitoring sensor systems." Licentiate thesis, Luleå tekniska universitet, EISLAB, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-25706.

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Rolling element bearings are used to carry load and reduce friction between moving parts in rotating machines, which play a central role in society and industry, for example in the transportation and energy sectors. It is essential to monitor and maintain the condition of bearings such that machines can operate efficiently and any failures resulting in unplanned stoppages are avoided. Therefore, bearings with embedded sensing capabilities are becoming increasingly common, which makes it possible to consider bearings to be sensor systems that can monitor the condition of rotating machines. Howe
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Enohnyaket, Mathias. "Electromagnetic characterization of power electronic systems." Doctoral thesis, Luleå tekniska universitet, EISLAB, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-17800.

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Propelled by increased global awareness and demand for clean energy systems, there is a growing trend in transportation, utility, industrial, and residential applications towards the utilisation of power electronic systems with enhanced power ow controllability and eciency. Examples of power electronics applications include terminal converters in high-voltage direct Current (HVDC) transmission; exible AC transmission systems (FACTS); and converters to interface alternative energy systems such as wind turbines to the grid, variable-speed motor drives in pump systems, vehicular propulsion system
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Gaultier, Mathieu. "An Autonomous Self-Docking Robot on Passive Systems." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-272122.

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The design of a robot is tightly linked to it assigned task. A robot does not have the same adaptability as humans do. Therefore every robot is designed to achieve one specific task. An increasing alternative to this issue are modular robots. Since one can not achieve the task alone, it requires the help of others. In this thesis is studied the possibility of having one single ground robot managing the displacement task instead of implementing sensors and algorithms on each independent autonomous systems. The displacement robot should have the ability to plug itself to some others so that it c
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Zamolo, Giovanni. "Architecture Designfor Compressed Sensing-Based Low Power Systems." Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-205031.

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In the Internet of Things scenario, a desirable feature of wireless sensors is the energy autonomy. However, the transmitter stage needs a great amount of energy to modulate and transmit the interested information. The power consumption can be improved using data compression algorithms: thereby, the total amount of the transmitted data is reduced, at expense of computational complexity. Alternatively, the recent compressed sensing technique can be applied on sparse signal instances, that is when most of the entries of the signal are zero or negligible in a fixed representation. Compressed sens
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Dahlberg, Kristian. "Marknadsinriktad Requirements Engineering : kännetecken och centrala aktiviteter." Thesis, University of Skövde, Department of Computer Science, 2001. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-522.

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<p>Denna rapport behandlar den marknadsinriktade Requirements Engineering (RE) processen. Allt fler företag väljer idag att implementera standardsystem i sina verksamheter. Den situation som ett standardsystem utvecklas i är annorlunda jämfört med den som ett kundspecifikt system utvecklas i. Detta innebär att den traditionella RE-processen inte är anpassad till dessa nya förhållanden.</p><p>Syftet med denna rapport är därför att utreda vad som kännetecknar en marknadsinriktad RE-process som stödjer kravhanteringsarbetet vid utvecklingen av ett standardsystem. Rapporten avser även att undersök
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Bengtsson, Ekström Sofia, and Eriksson Fabian Sandegård. "Solar Home Systems in Rural Zambia." Thesis, KTH, Energiteknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-234650.

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Solenergi är en förnybar energikälla som lämpar sig väl för soliga subsahariska Afrika. Samtidigt är det svårt att leverera solpaneler till de delar av befolkningen som bor på landsbygden på grund av otillräcklig infrastruktur och fluktuerande inkomster bland jordbrukare. I Zambia är solinstrålningen hög men infrastrukturen begränsad och köpkraften låg hos landsbygdsbefolkningen. För att komplettera en utvidgning av det nationella elnätet och andra statliga initiativ har privata aktörer en viktig roll i ökningen av tillgången till el på landsbygden. Fokus för denna studie var att finna en affä
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Franzén, Mattias, and Petter Nordh. "Användarreplikerande robotarm med 11 frihetsgrader." Thesis, Linnéuniversitetet, Institutionen för fysik och elektroteknik (IFE), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-106213.

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Målet med uppsatsen är att skapa en användarstyrd robotarm med många frihetsgrader. Ämnen som studeras är elektronik, reglerteknik, datateknik, samt 3D modellering. I rapporten tas det upp allt från teoretiska delar, till montering, samt testning. Den färdiga robotarmen har elva frihetsgrader och kan greppa och hantera lättareobjekt, med viss stabilitet.
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KAZI, MEHNAZ, and MICHELLE BILL. "Robotic Hand Controlled by Glove Using Wireless Communication." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-279812.

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The interest in the research and development of humanoid robots has been steadily growing in recent years. The application of such robotic systems are many and wide. In this bachelor’s thesis in mechatronics one such robotic system was built in the form of a hand. The aim was to investigate how well the robotic hand could imitate the movements of a user-worn controller glove as well as grip objects, both through wireless communication. The controller glove consisted of an Arduino Nano microcontroller, five flex sensors, an inertial measurement unit that detected the wrist rotation of the glove
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Hanefors, Victor, and Shaya Rahmanian. "Sharkbait - A self-stabilising underwater drone : Evalution of response time, propulsion and steering in a underwater environment." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-264442.

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This projects purpose was to build an underwater remote operated vehicle with software controlled self-stabilisation for evaluation of the response time, propulsion and steering to see what could be achieved. A prototype was constructed and tested in dry conditions at first. The prototype features an Arduino and a Raspberry Pi as control units, controlling six thrusters. With the help of a controller the user can manoeuvre the vehicle and when exposed to unexpected forces sensors detect this allowing the software to counteract it. Due to risk of massive electrical failure as a result of failed
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Boczar, Ludvig, and Felix Myrsten. "Autonomous Counterbalance Forklift : Autonomous forklift capable of transporting pallets." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-264498.

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This thesis explored the possibility to use line following technology to automate forklifts in a warehouse scenario. This was done to reduce the need for staff to always be present in the warehouse. A prototype forklift was constructed with three wheels, where driving and steering was done by the rear wheel. To control the forklift an Arduino Uno was used. The line following was done using Infrared Radiation (IR) sensors. Different setups of line following sensors were tested to achieve a forklift capable of following a line. Different layouts of the operating area were also tested. Line follo
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BALDHAGEN, FREDRIK, and ANTON HEDSTRÖM. "Chess Playing Robot : Robotic arm capable of playing chess." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-279829.

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The purpose of this thesis was to create a robot that through the use of visual recognition and robotics could play chess.The idea for this project came from the fact that there is an increasing demand for smart robots that can make their own decisions in a changing environment, and the fact that chess has recently seen a surge of new players. The optimal design of the arm making the moves was decided to be of SCARA type, which is a common robotic arm that excels in pick-and-place operations. The movement of the arm was driven by two stepper motors connected to a Raspberry Pi and an external p
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Petrov, Svetlomir. "Patch Delivery Infrastructure in SCADA Systems." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-239887.

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As other technologies, the SCADA architecture, whose origin can be traced back to midtwentiethcentury, was not designed initially with security in mind. Recent cyber-attacks andsecurity incidents show that approaches like security through obscurity and air-gapping thesystems are not relevant anymore. An analysis from E-ISAC about the cyber-attack on theUkrainian power grid shows that the risk could be significantly mitigated with prioritizing andpatching the known vulnerabilities on the most critical assets in an organization. The problem ishow to assure the secure deployment of patches in a t
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Fält, Pontus. "ADVERSARIAL ATTACKS ON FACIAL RECOGNITION SYSTEMS." Thesis, Umeå universitet, Institutionen för datavetenskap, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-175887.

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In machine learning, neural networks have shown to achieve state-of-the-art performance within image classifi€cation problems. ‘Though, recent work has brought up a threat to these high performing networks in the form of adversarial att‹acks. ‘These a‹ttacks fool the networks by applying small and hardly perceivable perturbations and questions the reliability of neural networks. ‘This paper will analyze and compare the behavior of adversarial a‹ttacks where reliability and safety is crucial, within facial recognition systems.
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Hamarneh, Ramez. "Analytical Calibration Scheme Suitable for Modern Mobile Communication Systems." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-289644.

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Modern systems utilize multiple transceiver modules to enhance capacity by directing the energy of the basestation only at the desired directions using beamforming algorithms. To accurately control the beam patterns, the phase and amplitude at each antenna port must be manipulated to follow the desired beam weight response. In a real system electrical, mechanical, and thermal variations for each antenna port path introduces different amplitude and phase errors. To ensure the desired performance, calibration at the antenna ports must be performed. The distinct transmit and receive frequencies i
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Lindblom, Sebastian, and David Johansson. "Automatic System Tests on Airborne Radar Systems." Thesis, Uppsala universitet, Fasta tillståndets elektronik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-340345.

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The aim of this master thesis was to create automated system tests on airborne radar systems. Automated tests can reduce time spent on repetitive and monotone work and instead create time for exploratory testing and customer criteria testing. Nightly builds and well designed tests can improve robustness and create a more stable system for the user. The project started with a pre-study, which consisted of researching the system in question, researching the possibilities of automated tests on said system and different tools that could be used in the project. Furthermore the pre-study contained i
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Haribabu, Aravind Saravanan. "Active Interaction Complexity in Systems Engineering." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-301619.

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The master's thesis describes how complexity measurement can enhance product development or design processes in collaboration with Scania CV AB. Scania has a strong track record in vehicle modularization and thus wanted to investigate the possibility of using complexity measures when architecting, developing, and maintaining complex engineering products such as electrified or self-driving trucks and buses to gain various types of benefits. The section YMPI at Scania, where the project is conducted, had, however, little experience in complexity measurements wants to identify and investigate whi
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Svensson, Harari Natalia. "Design Process of Flexible Assembly Systems." Licentiate thesis, Mälardalens högskola, Innovation och produktrealisering, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-28911.

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Flexible assembly systems have emerged in response to changing markets and increased variety in form of demands of new products and manufacturer’s need for differentiation. Assembly systems play a critical role in handling great variety and adapting to dynamic changes at the same time as securing product quality and productivity. Therefore, assembly systems should be designed to be able to handle changes. However, the design of flexible assembly systems is a challenge because it involves several subjects such as the configuration of the flow, the material handling and the flexibility to handle
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ATIGHECHI, ARSHAM, and HUSSEIN HAIDARI. "Vision For the Blind." Thesis, KTH, Mekatronik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-232991.

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How can we improve the living standards of the visually impaired using an Arduino? Living with visual impairment could potentially be one of the hardest things one could do. Constantly having to worry about obstacles and carrying a stick to feel your way forward. In order to combat this difficulty, we have designed Vision for the Blind. One of the usages of ultrasonic sensors are to measure the distance from objects using sound waves. These sensors, in combination with Piezo buzzers, have been used in Vision for the Blind to warn the user of incoming obstacles by emitting sound from the buzzer
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Lindgren, Tore. "Characterization problems in radio measurement systems." Doctoral thesis, Luleå : Department of Computer Science and Electrical Engineering, Luleå University of Technology, 2009. http://pure.ltu.se/ws/fbspretrieve/3373091.

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Brunnström, Jesper, and Kamil Kaminski. "Exploring Deep Reinforcement Learning Algorithms for Homogeneous Multi-Agent Systems." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-239364.

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Despite advances in Deep Reinforcement Learning, multi-agent systems remain somewhat unexplored, in comparison to single-agent systems, with few clear conclusions. In order to investigate this, two algorithms have been implemented and tested on a simple multi-agent system: Deep Q Learning with several improvements (EDQN) and Asynchronous Advantage ActorCritic (A3C). The result shows that with an increasing number of agents, learning a well performing policy takes more time. When only a few agents are used, the performance of both algorithms when fully trained is similar and could be viewed as
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50

Nawaz, Sabeen, and Sophie Remstam. "Recommender Systems for Movies Using a Class of Neural Networks." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-239377.

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In this project a recommendation system for suggesting movies is implemented, in the field of Collaborative Filtering (CF). The system is created with a Restricted Boltzmann Machine (RBM), which is a two-layer neural network. The main tool used for programming the RBM is the TensorFlow library, imported to Python. The performance of the system is evaluated with Root Mean Squared Error (RMSE) where the error between the observed movie ratings and the predicted ratings is computed. This study shows how different parameters of the RBM, e.g. number of hidden units, mini-batch size, epochs and lear
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