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Digitalising The Smith Machine
Halmstad University, School of Information Technology.
Halmstad University, School of Information Technology.
2021 (English)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

Health and fitness sector is becoming increasingly popular, and technology is being integrated into the fitness industry. This project proposed to digitalise the smith machine by creating a system to generate force through an electric motor to replace free weights. Because the exercise machine no longer needs to be loaded and unloaded with free weights, digitalisation of the smith machine will allow several users to utilise the same training machine. It will also be possible to track users' training information, such as weight lifted and the number of sets and reps performed during a workout. In this thesis, an Electrical speed controller (ESC) called VESC was used to control the BLDC motor. Experiments were conducted to find a method to control the torque. The result was producing a constant torque with a margin of error of 1-1.5 kilograms. Furthermore, two algorithms were developed where the resistance varies during the path of motion, which indicates that it is possible to develop the system to individualise resistance to improve training performance and rehabilitation. The conclusion that could be drawn is that this system can be used to replace free weights with an electric motor. 

Abstract [sv]

Hälso- och fitness sektorn blir allt populärare ochtekniken integreras alltmer ifitnessbranschen. Detta projekt syftar på att digitaliserasmithmaskin genom att skapa ettsystem för att generera kraft genom en elmotor föratt ersätta fria vikter. Genom att ersättalösa vikter med en elmotor så slipper användaren hanteralösa vikter vilket också underlättarför flera användaren att använda samma träningsmaskin.Det kommer också vara möjligt attspåra användarnas träningsinformation, såsom vikt,antalet set och repetitioner som utförtsunder ett träningspass.I detta projekt användes en motorstyrenhet som heterVESC för att styra en BLDC-motor.Flertalet experiment utfördes för att hitta en metodför att kontrollera vridmomentet. Dettaresulterade till att ett konstant vridmoment med enfelmarginal på 1-1.5 kilogram uppnåddes.Dessutom utvecklades två algoritmer där motståndetvarierar dynamiskt, vilket indikerar attdet är möjligt att i framtiden utveckla systemet föratt individualisera motstånd och därmedförbättra resultatet i träning och rehabilitering.Slutsatsen som kan dras är att detta system kananvändas för att ersätta fria vikter med en elmotor.

Place, publisher, year, edition, pages
2021. , p. 37
Keywords [en]
Digital Training Machine, Vesc, Vesc Tool, BLDC Motor, Constant Torque
National Category
Computer Sciences Computer Engineering
Identifiers
URN: urn:nbn:se:hh:diva-44815OAI: oai:DiVA.org:hh-44815DiVA, id: diva2:1568671
Subject / course
Computer science and engineering
Educational program
Computer Science and Engineering, 300 credits
Supervisors
Examiners
Available from: 2021-06-06 Created: 2021-06-17 Last updated: 2021-06-21Bibliographically approved

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CiteExportLink to record
Permanent link

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Citation style
  • apa
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Output format
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