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Analys av simulation för implementationer i en automatiserad verkstad
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Biomedical Engineering and Health Systems, Health Informatics and Logistics.
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Biomedical Engineering and Health Systems, Health Informatics and Logistics.
2019 (Swedish)Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesisAlternative title
Analysis of simulation for implementations in an automated workshop (English)
Abstract [sv]

En verkstad som tillverkar växellådor planerade att bygga om verkstaden. Det fanns flera problem i verkstaden som indirekt påverkade produktionen. Att tåg stod stilla utan att göra ett aktivt arbete på en huvudled i verkstaden sågs som ett stort problem. Ett annat problem var att det fanns för många tåg i verkstaden. Den planerade ombyggnationen var till för att få ned antalet tåg i verkstaden. Med ombyggnationen ville verkstadens ansvariga undersöka ytterligare möjligheter hur verkstaden skulle kunna förändras och kunna lösa delar av problemen. Det var även intressant att se om möjliga implementeringar av verkstaden skulle ge en ökad produktion.

Målen var att skapa ett simuleringsverktyg för att undersöka hur olika lösningar som baserades på ombyggnationen skulle kunna påverka ett tåg som fyllde på material till monteringslinor i verkstaden. För att kunna testa olika lösningar behövde en simuleringsmodell utvecklas och verifieras mot den befintliga lösningen i verkstaden. Därefter utökades modellen för att testa nya lösningar.

Från verkstaden fanns det data på konsumering av material. För tåget som skulle fylla på material fanns det teoretiska tider för olika arbetsmoment. Konsumeringen av material uppförde sig enligt en slumpfördelning som var normalfördelad. Resultatet blev att endast konsumeringen av material kunde verifieras då det bara fanns data på hur konsumtionen av material skedde. Resterande delar av simuleringen använde teoretiska planerade värden. Av de undersökta lösningarna var det en lösning med en ny hållplats på en mindre trafikerad väg, där ett tåg kunde vänta, som visade ett mer önskat resultat än de andra som undersöktes.

Abstract [en]

A workshop that produces gearboxes planned to remodel the workshop. There were several problems that indirectly affected the production. The fact that trains stood still without doing active work on the main road in the workshop was a major problem. Another problem was that there were too many trains in the workshop. The planned reconstruction was to reduce the number of trains in the workshop. With the remodel, those responsible for the workshop wanted to explore further possibilities on how the workshop could be changed. It was also interesting to see if the implementation of changes would give an increased production.

The goals were to create a simulation tool to investigate how different solutions based on the rebuild could affect a train that loaded the material into assembly lines in the workshop. To be able to test different solutions, a simulation model needed to be developed and verified against the existing solution. Then the model was expanded to test new solutions.

From the workshop there was data on the consumption of materials. For the train that would load up on materials, there were theoretical times for various work tasks. The consumption of materials behaved according to a random distribution that was normally distributed. The result was that only the consumption of materials could be verified as there was only data on how the consumption of materials took place. Remaining parts of the simulation used theoretically planned values. Of the solutions investigated, it was a solution with a new bus stop on a less busy road, where a train could wait, that showed a more desirable result than the others that were investigated.

Place, publisher, year, edition, pages
2019. , p. 60
Series
TRITA-CBH-GRU ; 2019:124
Keywords [en]
Mathematics, simulation, model verification, random numbers, assembly lines
Keywords [sv]
Matematik, simulering, modellverifiering, slumpmässiga tal, monteringslina
National Category
Computer Engineering
Identifiers
URN: urn:nbn:se:kth:diva-261393OAI: oai:DiVA.org:kth-261393DiVA, id: diva2:1357998
External cooperation
ÅF Pöyry AB
Subject / course
Computer Technology and Software Engineering
Educational program
Bachelor of Science in Engineering - Computer Engineering
Supervisors
Examiners
Available from: 2019-10-09 Created: 2019-10-06 Last updated: 2019-10-09Bibliographically approved

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