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Launchbot: Autonomous floorball goalkeeper training
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.), Mechatronics.
KTH, School of Industrial Engineering and Management (ITM), Machine Design (Dept.), Mechatronics.
2018 (English)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

The purpose of this project was to help floorball goalkeepers acquire gains in reaction time, catch/loss ratio and overall agility by using a ball launching machine. The device had the ability to launch balls in both a straight or curved trajectory and to aim at different parts of the goal.

The project focused on reducing the dispersion of balls launched in order to make the aim as precise as possible. By automating the sequence the training is made rewarding and challenging.

In order to make the machine safe and precise, stable materialwas required. However, it was found that the stable and heavy material increased the time to set the aim.

The final constructed product had the ability to aim at any part of the goal. The aim was tested at 6m away from the target and at 10m. it was found that 6m away there was a 15cm deviation from the target and at 10m away this deviation was 30cm. The velocity of the floorball at the goal was 15m/s at 75% motor power. The ball curved when spin was applied resulting resulting in the center point of shots moving 42.6cm. The deviation from target with the new trajectory was 20cm from a distance of 6m.

Abstract [sv]

Syftet med detta projekt var att bygga en maskin som ska hjälpa innebandmålvakter förbättra sina reaktionsförmågor, greppförmåga och rörelse i målet. Enheten hade förmågan att avfyra bollarna i både en rak och en böjd bollbana mot olika punkter av målet.

Projektet fokuserade på att minska spridningen av bollar med avsikt att göra siktet så exakt som möjligt samtidigt som att automatisera hela sekvensen för att göra träningen både givande och utmanande.

För att göra maskinen säker och precis så var stabilt material en nödvändighet men det stabila och även tunga materialet ledde till en ökad tid för inställning av sikte.

Resultatet var en konstruktion som kunde sikta mot samtliga punkter i målet med en spridning som motsvarade en area av 30 · 30cm från ett avstånd av 6m och 60 · 60cm

från ett avstånd av 10m då bollens utgångshastighet var 15 m/s och motorerna kördes på 75%. Med skruv applicerad på bollen så förflyttades träffcentrum 42,6cm och hade en spridning på 40 · 40cm från 6m avstånd.

Place, publisher, year, edition, pages
2018. , p. 74
Series
TRITA-ITM-EX 2018 ; 59
National Category
Mechanical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-232996OAI: oai:DiVA.org:kth-232996DiVA, id: diva2:1237264
Supervisors
Examiners
Available from: 2018-08-08 Created: 2018-08-08 Last updated: 2018-08-08Bibliographically approved

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