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Programmering av styrutrustning för vridbord vid radarmätplats
Örebro University, School of Science and Technology, Örebro University, Sweden.
2012 (Swedish)Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesisAlternative title
Programming of Control Equipment for Turntable at Radar Measuring Site (English)
Abstract [sv]

Vid kalibrering av en radars antenn placeras radarn på ett vridbord som kan rikta in den mot en mast. På masten sitter ett kors som används som riktpunkt. Huvuduppgiften i examensarbetet var att skriva ett program i National Instruments programmeringsmiljö LabVIEW som kan ställa in vridbordet med en noggrannhet på 0,1 milliradianer. Programmet ska kunna användas som ett DLL (Dynamic-link library) i LabWindows/CVI där ett antal olika funktioner ska kunna anropas för styrning av vridbordet. Eftersom nästan all maskinvara är från National Instruments blev programmet väldigt lätt att skriva. Det som istället blev en utmaning var att mäta upp längder och vinklar för vridbordet samt att vid testning kunna mäta så exakt som behövs. Alla krav uppfylldes men bristen på noggrannhet vid testning gör att resultaten har en viss osäkerhet.En annan del av examensarbetet var att skriva dokument som specificerar krav och gränssnitt samt beskriver hur programvaran kommer konstrueras, testas och kalibreras. Här följdes mallar enligt MIL-STD-498 som var en amerikansk militärstandard.

Abstract [en]

When calibrating a radars antenna the radar is placed on a turntable that points it to a measuring point on a tower. The main task for the thesis was to write a program in National Instruments programming environment LabVIEW that can turn the turntable with an accuracy of 0.1 milliradians. The program shall be able to be used as a DLL (Dynamic-link library) in LabWindows/CVI where a number of different functions shall be able to control the turntable. Because all of the hardware is from National Instruments the software development became easy. The challenge was instead to measure the lengths and angles of the turntable and at testing be so precise that is necessary. All requirements were met but the lack of accuracy when testing makes the results a bit uncertain.Another part of the thesis was to write documents that specify requirements, interfaces and also describes how the software will be designed, tested and calibrated. For these documents the MIL-STD-498 was used that used to be an American military standard.

Place, publisher, year, edition, pages
2012. , 26 p.
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:oru:diva-24290ISRN: ORU-NAT/ELE-GH-2012/0002--SEOAI: oai:DiVA.org:oru-24290DiVA: diva2:543386
Subject / course
Electronics Engineering
Uppsok
Technology
Supervisors
Examiners
Available from: 2012-08-08 Created: 2012-08-07 Last updated: 2012-08-08Bibliographically approved

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CiteExportLink to record
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Citation style
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