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Positionsbestämning av en roterande axel i en vinkelgivare
KTH, School of Information and Communication Technology (ICT).
2017 (Swedish)Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesisAlternative title
Position determination of a rotating axis in an angle sensor (English)
Abstract [en]

This thesis includes a study of a touch-free sensor systems and different principles for measuring a magnetic field. An in-depth study was conducted to describe two important principles in these contexts, i.e. Magnetoresistance principle and the Hall Effect principle. A market evaluation of different sensor chips developed on these principles was conducted.

Furthermore, the study should be linked to existing principles to determine the position of a rotating axis.

Function tests show that the performance requirement for each component was met. The results based on verification tests show that it is important to have a better mechanical connection between drive and device. Temperature tests show that the system meets the project specification at room temperature, but large angular deviations occur in temperature change, especially when driving with short steps.

This thesis can be continued by reprogramming the source code and developing new software that can control more parameters and make it more accurate at positioning.

Another recommendation would be to investigate and compare other sensor chips because there are several sensors that can apply to the system. Further improvements can be made by performing more tests on the system.

Abstract [sv]

Examensarbetet innefattar en studie om beröringsfritt givarsystem och olika principer för att mäta ett magnetfält. En fördjupad litteraturstudie utfördes för att förklara två viktiga principer i dessa sammanhang d.v.s. magnetoresistiva principen och hallgivarprincipen. En marknadsutvärdering av olika sensor-chip som utvecklats enligt dessa principer genomfördes.

Vidare ska studien kopplas till kända principer för att bestämma positionen för en roterande axel.

Funktionstester visar att prestandakravet för varje komponent uppfylldes. Resultaten baserade på verifieringstester visar att det är viktigt att ha en bättre mekanisk koppling mellan drivdon och enhet. Temperaturtester visar att systemet uppfyller projektets kravspecifikation vid rumstemperaturen men det uppkommer stora vinkelavvikelser vid temperaturförändring framför allt vid körning med korta steg.

Detta arbete kan fortsättas genom omprogrammering av källkoden och utveckling av ny programvara som kan styra fler parametrar och göra det mer exakt vid positionsbestämning.

En annan rekommendation skulle vara att undersöka och jämföra andra sensorchip eftersom det finns flera sensorer som kan tillämpa i systemet. Ytterligare förbättringar kan göras genom att utföra fler tester på systemet.

Place, publisher, year, edition, pages
2017. , p. 47
Series
TRITA-ICT-EX ; 2017:131
Keywords [en]
Position, sensor, Hall Effect, magnetoresistance
Keywords [sv]
Position, sensor, hall effekt, magnetoresistive
National Category
Computer and Information Sciences
Identifiers
URN: urn:nbn:se:kth:diva-222374OAI: oai:DiVA.org:kth-222374DiVA, id: diva2:1181193
Subject / course
Electronic- and Computer Systems
Educational program
Bachelor of Science in Engineering - Computer Engineering
Supervisors
Examiners
Available from: 2018-02-08 Created: 2018-02-08 Last updated: 2018-02-08Bibliographically approved

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