Dissertations / Theses on the topic 'Automatisk'
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Andersson, Håkan, and Albin Wärme. "Automatisk tvättmaskinslucka." Thesis, Halmstad University, School of Business and Engineering (SET), 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-741.
Full textDetta examensarbete, på 20 högskolepoäng, har genomförts under höstterminen 2006 på Högskolan i Halmstad. Examensarbetet har utförts i samarbete med Electrolux Laundry Systems i Ljungby. Projektet innefattar både produktutveckling och nykonstruktion.
Huvuduppgiften med examensarbetet är att utveckla en ny typ av öppning och stängningsanordning till Electrolux större tvättmaskiner med en tvättkapacitet på 40-110 kg. En del av uppgiften var också att förbättra designen och utseendet så att produkten blir mer användarvänlig och tilltalande.
Projektet som beskrivs i denna tekniska rapport bygger på en problemidentifiering i form av omfattande användarstudier och marknadsundersökningar. Dessa metoder har resulterat i ett antal koncept och lösningsförslag som sedan har utvärderats. I samråd med Electrolux har sedan det mest lovande lösningsförslaget utsetts.
Detta förslag består av en ny låsmekanism som drivs med hjälp av ett linjärt ställdon. Tvättluckan dras in och stängs på ett enkelt sätt samt förseglas. En prototyp av denna låsmekanism, inklusive tvättlucka, har även konstruerats i samarbete med Electrolux. Denna prototyp är i skrivande stund precis färdig, varför ingen fullständig utvärdering av funktionen har kunnat göras.
För att förbättra designen och utseendet på tvättluckan har ett antal skisser på nya designförslag på upphängning av tvättluckan gjorts. En del av dessa förslag har ritats upp i Catia V5 för att kunna visualisera lösningen direkt på dagens tvättmaskin.
Fernegård, Hans. "Automatisk plastlisthanterare." Thesis, Linköping University, Department of Mechanical Engineering, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-6158.
Full textToday a lot of goods is transported on wood pallets because it’s practical and enabels a fast way to load cargo. The drawbacks with pallets are that they weight a lot, are big and are relatively expensive. Therefore IKEA has developed plastic lists that can replace the europallet in some applications. In this examwork an automatic handling equipment for plastic lists are design from a requirement specification to a finished machine. The task of the plastic list handler task is to automatically mount plastic lists under goods. To make the engineering design work easier the plastic list handler were divided in to modules.
The examwork has been performed at Linköpings Tekniska Högskola, Institutionen för konstruktions- och produktionsteknik, and at TEXO Application in Älmhult. TEXO Application started in 2001 by Bo Lidbom in purpose to find new market areas for TEXO Holding.
Idag transporteras mycket gods på lastpallar eftersom det är praktisk och går snabbt att lasta. Den stora nackdelen med lastpallarna är att de väger mycket, är skrymmande och kostar mycket pengar. Därför har IKEA utvecklat plastlister som ska ersätta europapallen vid vissa transsporter. I det här examensarbetet beskrivs hur en plastlisthanterare konstrueras från kravspecifikation till färdig maskin. Plastlisthanterarens uppgift är att applicera plastlister under gods automatiskt. För att förenkla konstruktionsarbetet delades plastlisthanteraren upp i olika moduler.
Examensarbetet har utförts vid Linköpings Tekniska Högskola, Institutionen för konstruktions- och produktionsteknik, och vid TEXO Application i Älmhult. TEXO Application startades 2001 av Bo Lidbom i syfte att hitta nya marknadsområden för TEXO Holding.
Henrichsen, Thor Marius, and Erik Åldstedt Sund. "Automatisk Trafikkanalyse." Thesis, Norwegian University of Science and Technology, Department of Computer and Information Science, 2005. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-10212.
Full textVideoovervåkning av veistrekninger i reguleringsøyemed blir stadig mer vanlig. Registrering av objektbevegelse, svingemønster og dermed også konfliktsituasjoner gjøres idag manuelt. Automatisering av dette er interessant både ut i fra et økonomisk og sikkerhetsmessig synspunkt. Mens tradisjonelle sensorteknologier bare registrerer begrensede aspekter ved scenen, registrerer man med video all visuell informasjon. På denne måten kan skjulte mønstre identifiseres og kvaliteten i avviklingen forbedres. Denne rapporten beskriver prototyp implementasjoner for automatisk uttrekning og gjenfinning av relevant informasjon i slike overvåkningssekvenser. Implementasjonen er primært ment å behandle informasjon om kjøretøys bevegelser og svingemønster gjennom veikryss. Analysesystemet, X-Analyzer, inkluderer moduler for bevegelsessegmentering, skyggefjerning, klassifisering, objektfølging og datalagring. Systemet er generisk i den forstand at det kan anvendes på videomateriale fra vilkårlige veistrekninger. Brukeren definerer selv scenen i form av interessante regioner. Scenedefinisjonen danner grunnlaget for lagring i en romlig-temporal datamodell som legger til rette for gjenfinning av interessante situasjoner og sekvenser. Gjenfinningssystemet, X-Retriever, gir mulighet til å spesifisere konfigurasjoner som definerer konfliktsituasjoner i krysset. Vi mener vi har lykktes med å implementere ideen presentert i oppgavebeskrivelsen. Vår prototyp for automatisk analyse opererer effektivt og implementerer all funksjonaliteten i vår målsetning. Gjenfinningssystemet returnerer de datafragmentene som samsvarer med brukerens spørringer. Vi konkluderer rapporten med at implementasjonen var vellykket, men ytterligere testing og videre utvikling vil være nødvendig dersom systemet skal benyttes i praksis.
Reite, Toril Ormberg. "Automatisk temainndeling." Thesis, Norwegian University of Science and Technology, Department of Computer and Information Science, 2006. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-10295.
Full textI dagens informasjonssamfunn har man enkel tilgang til store mengder informasjon, dette fører ofte til at man finner mye mer informasjon enn man trenger og det blir vanskelig å finne det man leter etter. I min masteroppgave skal jeg prøve å finne en metode som automatisk angir tema til tekster. Ved å få angitt et tema, er det forhåpentlig enklere å se om teksten innholder relevant informasjon. Utgangspunktet for oppgaven var en idé om at det er mulig å finne tema for en tekst ved å bruke tittelen og sammendrag (abstract) som grunnlag. Dette testes ved å dele en samling dokumenter opp i flere deler og trene en del ved å la forhåndsbestemte tema for denne delen bli satt som utgangspunkt for sammenligninger med resten av samlingen. For å løse denne oppgaven har jeg gjennomført en litteraturstudie, tatt i bruk lovende teknologier for høsting av metadata og laget en prototyp som tester hvor godt metoden fungerer i praksis. For å høste metadata ble Open Archives Initiatives standard for høsting av metadata valgt som løsning for høsting av data. Arc, en åpen kildekode programvare, ble brukt for selve høstingen og MySQL ble valgt som datalager for innhøstede data. Det viste seg at metoden i de fleste tilfeller traff feil tema, sammenligner man med de fem temaene som blir foreslått er treffprosenten 11 prosent i gjennomsnitt. Dette gir for dårlig resultat til at metoden kan taes i bruk slik den er i dag. Det har underveis blitt oppdaget en mulig feilkilde i selve samlingen som er brukt for testformålet, da dokumentene i samlingen er fordelt slik at like tema ligger nært hverandre. Ved testing på et utvalg av samlingen på de 100 første dokumentene blir resultatet vesentlig bedre enn for hele samlingen. Temafordelingen i denne delen av samlingen er også mer jevnt fordelt enn resten av samlingen, dette indikerer at det er samlingen som er problemet og ikke metoden. Jeg konkluderte med at metoden mest sannsynlig virker og at den kan brukes til å angi tema for tekstlige dokumenter. Det må imidlertid testes på blant annet om resultatet blir bedre dersom man stokker dokumentene, eller bruker en annen dokumentsamling. Dersom resultatet blir at treffprosenten nærmer seg hundre prosent er det etter min mening mulig å bruke metoden i stor skala på internett for å angi tema til dokumenter.
Börjesson, Joakim, and Eric Kristoffersson. "Automatisk trafiksäkerhetskontroll." Thesis, Umeå University, Basic training programme for Police Officers, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-27256.
Full textHela projektet ATK startade 1999 i och med att regeringen skrev sitt 11 punkts program för att få ett snabbt resultat på de farligaste vägsträckorna i Sverige. Hela projekt bygger från början på Nollvisionen som syftar till att få ner antalet skadade och döda i trafiken. Huvudsyftet är inte att bötfälla folk som kör för fort utan ett sätt att få ner medelhastigheten på farliga vägar där det förekommit mycket olyckor med svår utgång. ATK är ett automatiskt system som med hjälp av radar och digitalkamera fotograferar hastighetsöverträdelser och sedan rapporteras dessa genom kontorsförelägganden. Statistik visar att under projektets gång har medelhastigheten sjunkit samt antalet svårt skadade och antalet döda har minskat, samtidigt som lindriga skadade givetvis ökar. Allmänheten ser överlag positivt på ATK, dock så finns det vissa undantag. Fortfarande efter försöksverksamheten finns det vissa problem som kvarstår. Dessa är framförallt att man inte kan identifiera vem som framfört fordonet p.g.a någonting varit i vägen när kortet tagits, te x solskydd mm. Förslag ligger idag för utredning om huruvida framtiden ser ut för ATK och hur man skall använda tekniken på bästa sätt.
Jorda, Andrei. "Automatisk mikrofonmixer." Thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-86304.
Full textOhldin, Anders. "Automatisk Routerkonfigurering." Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-56076.
Full textSiipilehto, Karlsson William. "Automatisk Kedjespännare : Prototypframtagning av automatisk kedjespännare till kombi-länkarm." Thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-141059.
Full textThis work is a project aimed at developing a solution to a problem with loose chains in one of Komatsu Forest's forestry machines. The task was to construct an automatic chain tensioner that would tighten the loose chains when needed. Requirements and goals were set for the project. Limitations were established and then a theory was developed for the problem. Based on the theory, a method could be developed to address and solve the problem the best way possible. The project was followed through and the result was four solutions to the problem. The different solutions addressed the problem in different ways but would theoretically solve the problem based on the given theory and limitations. However, one of the solutions was chosen as the best and for that solution, a production base was also taken. If the result were to be continued and a physical prototype would be manufactured, then it could possibly solve the problem of the decaying chains.
Haugen, Kristina. "Automatisk pilledispenser : Informasjonsflyt i legemiddehåndteringen ved innføring av automatisk pilledispenser." Thesis, Norwegian University of Science and Technology, Department of Computer and Information Science, 2006. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-10307.
Full textDet er i denne rapporten studert endringer i informasjonsflyt mellom aktører i legemiddelhåndteringen ved innføring av automatisk pilledispenser og relatert teknologi for elektronisk overføring av legemiddelinformasjon. Det skjer mange feil i håndtering og bruk av legemidler, og det kan i ytterste konsekvens føre til dødsfall og pasientskader. En av de viktigste årsakene til feil er mangelfull informasjonsoverføring mellom ulike instanser i helsevesenet. Et av tiltakene for å bedre informasjonsoverføringen, og dermed redusere problemet med feilmedisinering, er elektronisk utveksling av legemiddelinformasjon. I Trondheim holder man på med prosjekter knyttet til dette, blant annet arbeid med kjernejournal og elektronisk resept. En annen løsning det forskes på er egenjournal, som også gir pasienten elektronisk tilgang til sin journal, og mulighet for å registrere opplysninger i den. Et annet tiltak for å redusere feil kan være automatisk dosering og utdeling av legemidler, basert på elektronisk oversikt over pasientens legemiddelbruk. Det viser seg imidlertid at nye feil oppstår ved innføring av teknologi, blant annet fordi de innebygde kontrollrutiner og funksjoner som kommunikasjon mellom mennesker har, settes til side eller svekkes. Denne rapporten fokuserer derfor på de endringer som skjer i kommunikasjon og informasjonsflyt ved innføring av ny teknologi i legemiddelhåndteringen. Basert på relevant litteratur og en workshop med helsepersoner, ble det utviklet modeller for ulike scenarier i legemiddelhåndteringen i åpen omsorg. Det ble modellert informasjonsflyt mellom aktører i hver av aktivitetene forskrivning, utlevering fra apotek, dosering i dosett og inntak av dose. Det ble gradvis innført teknologi i modellene: kjernejournal/elektronisk resept, egenjournal og til slutt automatisk pilledispenser. Modellene ble deretter sammenliknet med henblikk på endringer i informasjonsflyt. Det ble sett på hvordan ulike kommunikasjonsprosesser fikk endrede egenskaper, hvor manuell kontroll ble svekket, hvor det skjer feil, og hvor det kan oppstå nye feil ved innføring av teknologi. Mange av endringene som ble funnet har positive konsekvenser, ved at de fører til at informasjon er mer korrekt, fullstendig eller blir raskere overført. Aktørene kan også få tilgang på informasjon de ikke har i dagens situasjon. Andre endringer fører til at kommunikasjon mellom mennesker erstattes med elektronisk overføring. I disse tilfellene er det viktig å se på hvilken funksjon kommunikasjonen mellom mennesker har, slik at man kan finne måter å ta vare på dette. Den siste gruppen av endringer som ble identifisert, innfører risiko for nye feil. Eksempler er påfyllingen av automatisk pilledispenser og programmering av pilledispenseren til å dele ut legemidler. I disse tilfellene det svært viktig å utforme gode system, rutiner og sikkerhetsmekanismer.
Persson, Edvin. "Krabba : Automatisk pallkragsmontering." Thesis, Karlstads universitet, Avdelningen för maskin- och materialteknik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-13936.
Full textThe company Goodtech Solutions AB has developed a prototype. This prototype is a machine that automatically can assemble pallet collars on pallets with the help of a robot. The prototype needs to undergo some improvements and this work focus on the unit that handles the pallet collar during the assembling. This unit is called crab because of its design. The objective of this work is to accomplish the improvements and the purpose is to be a basis for all the improvements that the machine could undergo before a market release. To assemble a pallet collar the crab locks the pallet collar after it’s received from the robot. Then it bends the hinges and mounts the pallet collar onto a pallet. The crab’s main problems are the adjustments before handling the pallet collar and to correct the crab’s position in relation to the outer collar before assembling. This is because all adjustments are in relation to the center of the crab and that the crab pushes out the four corners when locking the pallet collar. To bend the hinges the crab uses a method that’s similar to a quick hammer stroke and this method is considered uncontrolled. A customer requirement emerged during the project. The customer requirement was that the machine should handle the bigger Volvo L pallet collar in addition to the EUR pallet collar. Because the crab should handle two different sizes of pallet collars the new concept would be for a new design. Therefor the work was limited to only include the crab. The attachment of the crab to the structure and the drive during assembly were excluded. Because of these restrictions the new crab must have the same movements as the present crab to collaborate with the rest of the machine. In the new concept two sides of the crab are fixed, one long and one short side, and the other two are variable. The two variable sides push outwards in a linear direction to lock the pallet collar. With two sides fixed all adjustments can relate to their corner as it is an origo. The crab remains in this fixed position because of the origo but the outer collar can adjust to this origo. This new concept appears to be better for adjustments because of the origo and that only two sides can vary. To bend the hinges there are four units in each corner. The units bend the hinges with a linear movement and an anvil so the forces can be absorbed locally. These units can vary their positions to handle both the EUR pallet collar and the Volvo L pallet collar. The linear movement to bend the hinge is considered stable. During the design of this concept the choices of components, material, material dimensions are based on rough estimates and oversizing due to the machine being a prototype. The crab was designed foremost with parts and profiles in construction steel. Hydraulic cylinders were used to bend the hinges. Pneumatic cylinders and ball rail systems were used to lock the pallet collar and other movements. This new concept and its design have improved the crab and extended its functionality. Therefor the objective and purpose of this work is considered to be achieved. Work still remaining is more precise estimates of material dimensions and components. The attachment in the structure and the drive during assembling should be looked over to make sure the crab is compatible with the rest of the machine.
Bårdsen, Per Gunnar. "Automatisk visuelt inspeksjonssystem." Thesis, Norwegian University of Science and Technology, Department of Computer and Information Science, 2006. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-10300.
Full textDenne hovedoppgaven er rettet mot en praktisk implementasjon av et automatisk visuelt inspeksjonssystem. På bakgrunn av en serie av treningsbilder er målsetningen at systemet skal kunne klassifisere objekters avbildninger som godkjent eller underkjent. Arbeidet har lagt stor vekt på at systemet skal virke på generelle objekter. Systemet er implementert i Microsoft Visual Studio .NET 2003 C++, og viktige elementer tilknyttet arbeidet beskrives i denne rapporten. Resultatene virker lovende, da inspeksjonssystemet gjennomsnittlig klassifiserer 91% riktig på de 8 bildesett som systemet er testet med. Videre planer gir imidlertid håp om å utbedre systemet betydelig. Disse planene presenteres som videre arbeid i slutten av rapporten.
Karlsson, Erik. "Automatisk aeroponisk odling." Thesis, Högskolan i Halmstad, Akademin för informationsteknologi, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-37468.
Full textAxelsson, Patrik. "Automatisk trimning av en flexibel manipulator." Thesis, Linköping University, Department of Electrical Engineering, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-16322.
Full textDagens industrirobotar är mycket mer komplexa än vad de var för några år sedan. Regleringen baseras på matematiska modeller och för att prestandan ska var lika bra eller bättre än förr krävs det att modellerna är anpassade till individen. Det krävs därför att modellparametrarna justeras för att stämma överens med den aktuella roboten.
Rapporten handlar om hur de flexibla modellparametrarna ska trimmas för robotens leder så att verktygets svängningar minskar. På grund av att en rörelse på en axel påverkar de övriga axlarna, blir detta ett sexdimensionellt minimeringsproblem. Detta kan dock lösas genom att låsa vissa leder i olika positioner och på så sätt delas minimeringen upp i flera steg med som mest tre variabler att minimera över. Målfunktionen beräknas som L2-normen över den del av momentsignalen som, enligt momentframkopplingen, ska var konstant. En dåligt trimmad robot svänger mycket vilket ger ett högt målfunktionsvärde. Genom att justera de flexibla modellparametrarna kan svängningen minimeras.
Industrial robots are more complex today than they were a few years ago. The control is based on mathematical models and in order to keep the performance or make it even better it is desirable to adjust the models so that they fit the individual robot. It is therefore necessary to adjust the model parameters.
The report deals with how to tune the model parameters, that affect the joint flexibility, to decrease the oscillation of the tool. A joint is dependent on the motion of the other joints and therefore it becomes a six-dimensional optimization problem. The problem can be simplified to a number of subproblems with at most three dimensions by selecting joint positions which minimizes the coupling between the joints. The objective function is calculated as the L2-norm over a sequence of the motor torque. The sequence is defined to be where the torque reference is constant. A robot which is poorly tuned oscillate a lot, which implies a large function value. The oscillation can be decreased by a careful tuning of the model parameters.
Olsen, Stian Fuglesang. "Automatisk segmentering av bevegelsesdata." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for teknisk kybernetikk, 2010. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-11259.
Full textBryngelsson, Susanne. "Sjöodjuret : en automatisk poolrengörare." Thesis, Konstfack, Industridesign, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:konstfack:diva-2845.
Full textExamensarbete Industridesign kandidatexamensarbete
Vartdal, Gaute. "Automatisk sporing av Dopplerspektrum." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for elektronikk og telekommunikasjon, 2011. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-13494.
Full textElmelid, Axel. "Automatisk nivåreglering av strålkastare." Thesis, Uppsala universitet, Signaler och System, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-187305.
Full textLarson, Larsson Anton Robin. "Automatisk applicering av polerpasta." Thesis, Högskolan i Halmstad, Sektionen för ekonomi och teknik (SET), 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-15565.
Full textVareskic, Srdjan, and Laust Sörensen. "Automatisk viktkontroll av glascontainer." Thesis, Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-2573.
Full textThis degree project has been carried out in cooperation with Gedevelop in Helsingborg.
Gedevelop has developed a camera that can calculate the weight of a liquid glass mass.
Because of the density and viscosity changes in the glass, the weight information is
sometimes incorrect given. Glass industry is today addressing the problem by an operator
performing a manual weighing of a few bottles which, in turn, calibrates the camera system.
The project aimed to develop an automated system to control the weighing of glass bottles for
glass industries. This system must be so flexible that it can be easily mounted on plants with
different production equipment around the world.
The project includes design and construction of equipment that meets the requirements
formulated together with Gedevelop. Work has been done both in Halmstad and Helsingborg
and has included both calculations and review of the theory to understand the forces that
influence the design of different construction parts. A prototype was produced that meets the
operating requirements for the design and can be used in testing features. However, the design
does not meet the requirements to be set up at a production line because it does not pass the
temperature appearing in glass industry. This can easily be remedied by further modification
of the design in terms of protection of stainless steel.
Widén, Jonas. "Automatisk test för myoelektroder." Thesis, Linköping University, Department of Science and Technology, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-2338.
Full textDenna rapport avhandlar en tio veckors period på Otto Bock Scandinavia AB i Norrköping. Där analyserades en manuell testutrusning för funktionstest av myoelektroder, för att mäta muskelspänningar. Myoelektroderna används till att styra gripfunktionen hos handproteser, för patienter som förlorat en del av sin arm. Analysen ska resultera i att ge ett förslag på en automatiserad test av elektroderna. En stor del av rapporten består av studier kring hur testmetoderna fungerar och elektrodernas användning och funktion. Slutligen behandlas även ett förslag på en automatiserad test för elektroderna.
The present report concerns a ten weeks period at Otto Bock Scandinavia AB in Norrköping. An analyse of a manual test equipment for testing myoelectrodes, who is used to measure muscle potential in the arm. The myoelectrodes are used to control a grip function on hand prostheses, which is used by persons who has lost their lower arm. The analyse should result in a proposal of an automation of the manual test equipment for the electrodes.
A significant part of the report discusses the function of test methods and who the electrodes are used for and their function. Finally, discusses a proposal on an automated test for the electrodes.
Holmqvist, Peter. "Automatisk bedömning av reglerkretsarsprestanda." Thesis, Linköping University, Department of Electrical Engineering, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-2760.
Full textIn this thesis, a computer program that in a simple way can calculate the performance of control loops at the refinery Preemraff Lysekil has been created. The computer program has been adapted to the environment at Preemraff Lysekil. Theories for evaluation has been studied in aspect of reliability and of automatic implementation. The evaluation has been carried out from data collected directly from control loops at the refinery and from simulated control loops with implemented errors.
Among the studied methods are Harris index and Stattin´s oscillation index. According to the literature the Harris index is the most used for measure of control performance, but the results show that it does not work as a single measure at Preemraff Lysekil. However Stattin´s oscillation index works well and can be used for detection of oscillations. Statistic measures like variance, IAE, ISE and a method based on histogram are also studied. All the statistical measures are simple to implement and are rather accurate. Several tests on control loops has been carried out and it has been shown that it ís enough to use the method based on histograms and Stattins oscillation index to get a good picture of the performace of the control loops at Preemraff Lysekil.
The work has resulted in a MATLAB tool that evaluates the control loops and can be run at any time. The tool first calculates Stattin´s oscillation index. The loops that are oscillating are marked. In the next step, the method based on histograms is used and a list with the worst performing loops at the top is created.
LARSSON, MAGNUS, and JOHAN LUNDBLAD. "Produktutveckling av automatisk grind." Thesis, KTH, Tillämpad maskinteknik (KTH Södertälje), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-170060.
Full textAxelsson, Anders. "Automatisk bullerdosreglering i hörselskydd." Thesis, Linköpings universitet, Elektroniksystem, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-106578.
Full textIn noisy workplaces the staff are often using hearing protectors with built-in speakers for entertainment purposes. Prolonged exposure to loud sound levels can cause damage to the user’s ears. The legislation requires therefore a limiting mechanism for the speakers. The noise level is defined as the average of the sound levels the user has been exposed to during a working day. If the noise threshold is reached the user has to rest his ears. This definition can be exploited to allow the user to listen to a loud sound level for a limited time and then lowering it. If the sound level is lowered slowly, it is possible to preserve both safety and listening experience. This work describes how an algorithm can be designed for a digital signal processor with the purpose of controlling the sound level. The aim was to protect the user's hearing without spoiling the listening experience, and without consuming more power than necessary. The algorithm design included a predictor that predicts the amount of noise the user risk being subjected to, if he continues to listen at the same level. Slow reduction of the sound level can then be carried out in time before the noise threshold is reached. It turned out that the algorithm only needed a few samples per second to estimate and control the sound level sufficiently precisely, this reduced the power consumption. The results show that it is possible to combine the objectives for safety, listening experience and power consumption in hearing protectors. The algorithm was not implemented in a real system. The algorithm had only access to the audio signal which the user intended to listen to for entertainment purposes.
Edström, Oskar. "Konstruktion av automatisk monteringscell." Thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-85215.
Full textEjdemark, Johan. "Automatisk detektering av andning." Thesis, KTH, Hälsoinformatik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-227270.
Full textHaberler, Oliver, Niklas Granander, Aron Gosch, Fabian Haugen, Rasmus Viitanen, Sabina Serra, and Rickard Torén. "Automatisk taggning av video." Thesis, Linköpings universitet, Institutionen för datavetenskap, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-148847.
Full textNordgren, Silas. "Automatisk konfiguration av orkestreringssystem." Thesis, Luleå tekniska universitet, Institutionen för system- och rymdteknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-84548.
Full textÅberg, Rickard. "Automatisk kalibrering av vätskenivå." Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-174862.
Full textBiosensor Applications AB develops biotechnical analysis equipment for detection of illegalsubstances such as narcotics and explosives. The equipment is used by customs,correctional facilities and rehabilitation centers.The high sensitivity of the equipment requires careful calibration of the whole system,which is performed automatically for most of the system modules. For one importantpart of the detection process however, the setting of a liquid level, there is no methodfor an automatic calibration. The calibration must therefor be performed manually by atechnician, which is time consuming, costly and above all di cult due to the additionallack of a well de ned manual method.This report describes the thesis evaluation of the manual methods that are used today.After that, a method for a fully automatic calibration of the liquid level is developed.Furthermore, the report describes how the automatic method is implemented into theequipments system software.The result section presents how the upgraded system is used by the company duringproduction, showing large bene ts in terms of time requirement, cost and repeatability
Herslöf, Daniel, and Jakob Steninger. "Uppdatering av automatisk materialprovningsmaskin." Thesis, KTH, Tillämpad maskinteknik (KTH Södertälje), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-211903.
Full textLindström, Niclas. "Automatisk bollskjutare för innebandyträning." Thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-141426.
Full textRUSTAS, ULF. "Automatisk draggenerator för spel." Thesis, KTH, Skolan för datavetenskap och kommunikation (CSC), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-142400.
Full textThe purpose of this project is to investigate how to create a move generator for games defined in the predicate logic language GDL. The move generator is supposed to be used as a tool for converting game rules to playtrees that can be automatically traversed and analysed by programs for classification and playing. GDL is similar to Prolog so the move generator was implemented by modification of a method to make a Prolog interpreter, though a number of adaptations, additions and optimizations specific to GDL were made. Move generation is a very iterative process, so using a declarative, predicate logic language like GDL will be shown to have problems with regards to performance, despite adaptations and optimizations.
Olsson, Pierre, and Daniel Wiksten. "Automatisk slutkontroll av kamaxlar." Thesis, KTH, Tillämpad maskinteknik (KTH Södertälje), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-188865.
Full textMelin, Jörgen. "Automatisk segelinställning hos en segelbåt." Thesis, KTH, Reglerteknik, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-105146.
Full textThe purpose of this thesis work is to construct a model of a sail setting system of a sailboat. This system will automatically adjust the setting of the mainsail of the boat. The reason of having an automatic sail setting system could be to keep the weight down of the boat as the crew weighs more than the system. Other aspects are that sailboat owners, who lack the knowledge or think that it is di-cult to adjust the sails, can use the system to ease the sailing when taking trips with their boat. You will then avoid using the boat's engine and can then save on fuel costs. The setting of the sail is made by measuring with a sensor from where the wind is blowing relative to the hull and due to the wind velocity. Information has been collected to be able to model a sailboat with its components. A mathematical model of the sailboats components has been constructed to know how the mainsail is set for a given input signal to the electric winch as well as how the forces will aect the winch. Finally, the moment of inertia of the components of the boat and its hull has been modeled to capture the dynamics and to more accurately describe motions in the system. The mathematical model of the sail setting system was created in subsystems. In the software Simulink the subsystems were put together to a complete model. The model that is non-linear was linearized due to the reason that linear control theory was used when constructing a leadlag controller. The constructed linear controller was implemented in the non-linear model and several simulations were made with dierent disturbances and loads. The controller and the system fulfillled all the requirements that were specied.
Svensson, Jonatan, and Johannes Larsson. "Automatisk tändning till modern vedpanna." Thesis, Halmstad University, School of Business and Engineering (SET), 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-2587.
Full textIf you have access to wood, a wood burning boiler is a cheap way to heat your home, but it is certainly not the most convenient option. Wood requires many operations and management, which takes time. One way to reduce this workload is to have a modern boiler with automatic ignition. Enertech/CTC has a desire to create an accessory with automatic ignition to a modern wood burning boiler. Today there is no boiler on the market that can ignite firewood automatically without the introduction of paper and sticks.
A comfortable ignition with a timer, temperature and GSM control means that the boiler can compete with other modern heating alternatives on the market. During the project we used our knowledge in construction, energy technology and the CAD program Catia V5. In the process different prototypes were manufactured and tested. The tests gave us ideas for the final design. We finally came to a result in which the wood is ignited by flowing air which is heated by an electric radiator. The module can be bought as an accessory and installed in an existing boiler.
The report describes the methods we used, from problem definition to final solution and results.
The thesis work has been done partly in secrecy so the report will describe some areas limited.
Landén, Ulf. "Automatisk Cykelväxel : Förstudie och datainsamling." Thesis, Jönköping University, JTH, Mechanical Engineering, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-1253.
Full textEliasson, Per-Emil. "Automatisk trimning av externa axlar." Thesis, Linköping University, Department of Electrical Engineering, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-2158.
Full textThis master theses deals with different methods for automatic tuning of the existing controller for external axis.
Three methods for automatic tuning have been investigated. Two of these are based on the manuell method used today. The third method is based on optimal placement of the dominant poles. Different sensitivity functions are important for this method.
At the end of the thesis, a proposal of a complete tool for automatic tuning is given.
Svendsen, Anny Marit. "Automatisk organisering av domenebasert læringsmateriell." Thesis, Norwegian University of Science and Technology, Department of Computer and Information Science, 2006. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-10250.
Full textMålet med denne oppgaven er å se om en automatisk kan organisere kunnskapsobjekter tilrettelagt for et tredimensjonalt navigerbart konseptkart. Forutsetningen for å gjøre dette mulig er at kunnskapen er fremstilt i enheter, kalt læringsobjekter. Et læringsobjekt består av en eller flere kunnskapsobjekter knyttet sammen med ett eller flere læringsmål, og ulike læringsaktiviteter. Et kunnskapsobjekt er bygd opp av en eller flere ressurser. Disse ressursene kan være tekst, lyd, bilde, video osv. En ser for seg at kunnskapsobjektene befinner seg i samlinger, repositories. Kunnskapsobjektene skal kunne utvikles av både faglig veileder og lærende, men hovedsakelig tenker en at de skal produseres av profesjonelle aktører. Her er det snakk om en produksjonslinje. Den profesjonelle aktøren står for produksjon og presentasjon av objektene, mens faglig veileder sørger for innhold og pedagogisk tilrettelegging. Til hvert kunnskapsobjekt er det knyttet en tekstlig beskrivelse som danner grunnlag for vektorisering. Det er denne vektoriseringen som gjør det mulig å indeksere kunnskapsobjektene, samt sammenligne dem. Sammenligningen av de ulike objektene danner grunnlag for klyngeanalyse. Klyngeanalysen vil organisere like objekter i grupper slik at hver gruppe deler felles egenskaper, dvs. har en stor grad av likhet. Med denne grupperingen kan man representere objektene visuelt, for eksempel i en tredimensjonal graf. Som en del av denne oppgaven er det utviklet to prototyper for klyngeanalyse. I den ene benyttes det K-means-algoritme, mens i den andre benyttes en agglomerativ hierarkisk algoritme. Dataen fra disse analysene er tenkt brukt i en tredimensjonal representasjon. Prototypen for K-means har en todimensjonal framstilling slik at man får et visst innblikk i hva en visuell framstilling av objektene innebærer. En vil blant annet se av testene at K-means med brukervalgte initielle klyngerepresentanter gir det beste resultatet for klyngeanalysen, og at de tekstlige beskrivelsene av kunnskapsobjektene bør være av størrelse som en vanlig A4-side.
Bragde, Johan, Marcus Elgendahl, and Pär Molin. "Automatisk trafiksäkerhetskontroll i Jämtlands län." Thesis, Umeå University, Basic training programme for Police Officers, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-27162.
Full textVi blev intresserade och ville ta reda på hur automatisk trafiksäkerhetskontroll (ATK) fungerar nationellt och regionalt i Jämtland. Även vilka brister och fördelar som finns samt vilka möjligheter systemet i framtiden kan erbjuda. Trots att Sverige ligger långt framme i trafiksäkerhetsarbetet avlider eller invalidiseras mellan 4-5% av varje årskull av den svenska befolkningen till följd av trafikolyckor. Årligen kostar överträdelser av hastigheten omkring 200 liv vilket gör dessa till vårt största trafiksäkerhetsproblem. Av Vägverkets mätningar av hastighet inom Region Mitt framgår att på landsbygdsvägnätet uppgår andelen trafik över hastighetsgränsen till drygt 50 %. År 2002 dog 8 personer och 335 skadades svårt i Jämtland län på grund av trafikolyckor. ATK har efter försök visat sig vara ett mycket effektivt verktyg för att sänka medelhastigheten och dödsolyckor på farliga vägavsnitt där andra åtgärder inte är planerade. Inom Jämtland bedrivs i dagsläget ATK-övervakning på två sträckor men fler är planerade. Trafikavdelningen lider av personalbrist vilket resulterar i att ATK inte får den tid som avdelningen skulle vilja lägga på den. Trots detta har de ökat kamerans aktiva tid per mättillfälle men ligger fortfarande under snittet för riket. De tre övergripande problemområdena som vi har identifierat efter att vi sammanställt resultaten och diskuterat dessa är medvetenheten hos allmänheten, resursbrist och samverkan med andra myndigheter och organisationer.
Åström, Mattias. "Automatisk textsammanfattning : en experimentell studie." Thesis, Högskolan i Borås, Institutionen Biblioteks- och informationsvetenskap / Bibliotekshögskolan, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-20871.
Full textUppsatsnivå: D
Nolgren, Markus. "Automatisk genreklassifikation : en experimentell studie." Thesis, Högskolan i Borås, Institutionen Biblioteks- och informationsvetenskap / Bibliotekshögskolan, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-18835.
Full textUppsatsnivå: D
Söderström, Harald, and Oscar Ingels. "Automatisk kursreflektionsanalys med Gavagai Explorer." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-300057.
Full textTo compile and analyse qualitative data takes a lot of time and resources. A common practice at several universities is to, towards the end of each course, collect data of what the students thought about the course through a questionnaire consisting of both quantitative and qualitative questions. Quantitative answers are easy to compile, while the qualitative answers require to be read; sometimes more than once and preferably by the same person. Therefore, it would be of interest to improve the analysis of such qualitative answers, especially in the cases where there is a large number of qualitative answers. Such is the case with open answer course reflections at universities. Thus, in this report we intend to answer the following question: Would the themes, opinions and semantic values extracted from automatic semantic analysis of student course reflections be of use when analysing the content of these texts? Explorer is a program developed by the company Gavagai and performs automatic semantic analysis on a datasource. To answer the question above we have investigated to what degree the program Explorer can do correct semantic classifications with student course reflections as input. The program assesses its conclusion by extracting common topics in the text data and then analysing the sentimental values regarding those topics. We used Explorer on course reflection texts that students at the Royal Institute of Technology wrote in the course DM1587 Program Integrating Course in Media Technology about the course DT1130 Spectral Transformations. DM1587 is a meta course where students reflect on courses they have studied during the previous period. From the 55 texts analysed by Explorer where 9 relevant themes identified and 467 semantic expressions. Amongst the semantic expressions we found that 135 of them were of incorrect semantic classification. Throughout our study it became apparent that regardless of how precise the semantic classifications were, further research is necessary that seeks the need of semantic analysis of this type of texts. Future studies should be done focusing on the stakeholders of these course analyses to further assess if a program like Explorer could be of use to improve the analysis of qualitative answers.
Sjöström, Frej. "Automatisk uppgradering av Cisco IOS." Thesis, Luleå tekniska universitet, Institutionen för system- och rymdteknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-79508.
Full textRandau, Sandra, and Gustav Thioub. "Octagarden : Inomhusodling med automatisk bevattning." Thesis, Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-34051.
Full textThis report is presenting the project of an indoor farming system with automaticwatering – Octagarden. Areas that are covered in this report are product research,sketching and screening, choice of materials, result evaluation, and conclusion etc.The concept was to develop farming options for those with limited area of living.The result is a modular and user friendly system with optimized occupation ofspace, and therefore suitable for small apartments.
Yau, Candy. "KRAVBILD FÖR AUTOMATISK SLÄCKSYSTEM -SPRINKLER." Thesis, KTH, Byggteknik och design, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-215422.
Full textFor every year, the authority requirements regarding building technology gets more acute andintense. In Boverkets byggregler 19 automatic sprinkler system changed from advice to requirement.Purpose of this report is to identify pretension for installation of automatic sprinkler system inbuildings in Sweden with focus in authority requirements through literatures and interviews.Requirements for installation of automatic sprinkler system are controlled by the parliament byPlanning and Building Act. The requirements clarify and gets clearer for every authority all the way toSvensk standard where the requirements adjust into details and regulates terms like response time,pressure and design density. The requirements are dimensional and customized for different activityand section.Authority requirements settles the pretension for installation of automatic sprinkler system in somebuildings for care in the same time insurance companies settles the pretension for installation ofautomatic sprinkler system in industry buildings. Conclusion for this report is that requirements forinstallation of automatic sprinkler system are different depends on if authority or insurancecompanies settles them. Requirements from authority focus in protection of lives while insurancecompanies focus in property loss. Boverket wants insurance companies to be more responsible foruse of automatic sprinkler system in other buildings than buildings for care.Different requirements from different parts of the society specifies in this report just to let thereader have an insight how jurisprudence affects technology in building industry.
Köhlström, Jonas. "Automatisk trimning av drivsystemreglering från MATLAB." Thesis, Linköping University, Department of Electrical Engineering, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-8726.
Full textThis master thesis covers the development of an automatic tuning process for the existing speed controller for drive systems. The drive systems are resonant two-mass systems where a motor is used to drive a load connected by a shaft. The developed method relies heavily on system identification and the construction of a complete mechanical model of the process. With this approach, the common problem with poor load speed control that derives from measuring only the motor speed can be addressed and solved for a majority of such processes.
The automatic tuning method has along with general test functions been implemented in a complete tool for automatic tuning, testing and performance evaluation and reporting for drive systems.
Karlsson, Johanna. "Automatisk språkgranskning för myndigheter : En förstudie inför skapandet av en automatisk språkgranskare anpassad för myndigheter." Thesis, Linköpings universitet, Institutionen för datavetenskap, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-70099.
Full textJemtland, Petter. "Dokkingsystem for automatisk selvstyrt vogn (AGV)." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for produksjons- og kvalitetsteknikk, 2010. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-12909.
Full textThis master thesis called Docking system for automatic guided vehicle (AGV) has as a goal to develop an automatic guided vehicle (AGV) and to suggest an automatic docking system for this AGV. A new AGV has been developed focusing on keeping the construction being as simple as possible, and on using easily available components. The AGV is based on a frame-construction made from aluminium profiles. It is driven and steered using a differential drive with two electric brushed motors mounted directly in the sidewall of the frame. The new AGV is made for being used in the automation laboratory is presented and its main components such as motors gears and motor controllers are described. A short walk through of the control of the AGV’s motors using the motor controllers is also given. An introduction is given into the basics behind the representation of a mobile robot’s position and orientation, together called its pose. Two models on the forward kinematics for differential drive mobile robots and a model for open loop control of mobile robots are presented. The basis for the development of the docking system is developed through an analysis of different methods and sensors that can be used in the docking procedure. Their mode of operation, their strengths and weaknesses are assessed and compared. Among the sensors covered is a laserbased range finder, machine vision systems using digital cameras, infrared range sensors and ultrasonic range sensors. Using this analysis as a basis it is decided to develop a docking system using a certain type of infrared range sensors that use the principle of triangulation to measure the distance to an object. This is especially interesting since these sensors are very low cost. A solution on how to do the docking using these infrared sensors is presented. The solution is based on using six infrared sensors; two sensors with a range from 20 to 150 cm and four sensors with a range from 4 to 30 cm. The two long range sensors are mounted in front of the AGV and are used for determining the AGV’s pose relative to the dock prior to the docking procedure. The four short range sensors are mounted along the two sides of the AGV and are used to fine tune the AGV’s position relative to the inner walls of the dock.
Sundlöf, Martin, and Hans Persson. "Automatisk identifiering av branter för orienteringskartor." Thesis, Högskolan i Gävle, Avdelningen för Industriell utveckling, IT och Samhällsbyggnad, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-10930.
Full textOrienteering is a sport where the purpose is to visit a number of predefined control points using a map. The orienteering map shows various objects such as rocks, pits, knolls and cliffs. It is expensive and time consuming to produce an orienteering map. Approximately 120.000-150.000 SEK and 20–30 h/km2 field work is invested in every map produced. Considering orienteering maps are financed by non-profit orienteering organizations every time and money saving process is welcome. In this degree project a function has been created in a software called OL Laser. The aim of the function is to automatically identify cliffs in laser data for the usage as base maps in the production of orienteering maps. First the definition for cliffs in orienteering was defined. To be classified as a cliff three requirements had to be fulfilled, namely at least 1 m in height difference, at least 1 meter wide and a gradient greater than 85°. These requirements were determined by supplementing the existing restrictions specified in the regulations for orienteering maps with own measurements in three different reference areas around Gävle. The function was programmed so that a search in a height raster was started. Step by step the raster was scanned for pixels that meet the given parameters of the height difference, the width and gradient. The values of the parameters were determined by calibrating the function in the reference areas. The calibration was made to make it possible to automatically identify cliffs. The settings of the parameters used in the function after the calibration were 42.5° gradient, 0.6 m height difference and a propagation of at least two consecutive pixels. The pixels that the function identified as a cliff is the result. The result shows that the function is able to automatically find the cliffs, even in areas which it is not calibrated against. To be able to use the cliffs on an orienteering map, the cartographer has to verify the result of the function in the field. Both time and money is saved by using the function when producing orienteering maps.
Jonsson, Per. "Automatisk lockmekanism : från idé till prototyp." Thesis, Uppsala universitet, Institutionen för teknikvetenskaper, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-193223.
Full textSvensson, Jonas. "AUTOMATISK PAN/TILT-KONTROLLER FÖR ANTENNINRIKTNING." Thesis, Jönköping University, JTH, Computer and Electrical Engineering, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-12197.
Full textThis report describes the design and construction of a prototype that automatically aims a microwave link towards a target. The link, that is located on a mobile aerial mast, is used by Saab Training Systems as a part of an infrastructure network. The report also discusses the development of a GUI that communicates with the control unit by Bluetooth.
The control unit, called Pan/Tilt-controller, controls the position of the link by stepping motors. One motor controls the azimuth angle and the other one controls the elevation angle.
By a GUI the operator enters the coordinates on its own position and the targets position. Hereafter a bearing is calculated and it will be sent up to the control unit.
The control unit will sense its own direction by a magnetic sensor that works as an electronic compass. The Pan/Tilt-controller will then rotate the link to reach the targets coordinates. Alternatively you can control the position of the link manually by the GUI.
The report also discusses the functionality of the sensors and tests have been conducted to determine the accuracy of the control unit. The Pan/Tilt-controller can rotate a link 360º around its own axis and also tilting the link ±90º. The Pan/Tilt-controller can direct a link towards a target with an accuracy of 5º -10º.