| Summary: | Thesis (MScEng)--Stellenbosch University, 2014. === ENGLISH ABSTRACT: With CubeSats becoming popular as a cheap alternative to larger satellites, the need
for advanced miniature attitude determination and control systems (ADCS) arises to
meet the pointing requirements of satellite operations such as earth imaging and orbit
maintenance. This thesis describes the design of a complete ADCS for use on CubeSats.
A previously designed CubeSat on-board-computer, CubeComputer, and ne sun and
nadir sensor, CubeSense, is incorporated in the design. The remaining requirements with
regard to sensors and actuators were met by CubeControl, an additional module, the
design, manufacturing and testing of which are described. CubeControl can implement
magnetic control with the use of a magnetometer and three magnetorquers. It is also
capable of driving three reaction wheels for accurate active 3-axis stabilization. === AFRIKAANSE OPSOMMING: Met CubeSats wat gewild raak as 'n goedkoop alternatief tot groter satelliete ontstaan
die behoefte vir gevorderde miniatuur ori entasiebepaling en -beheerstelsels wat satelliet
operasies soos aardwaarneming en wentelbaan korreksies moontlik maak. Hierdie tesis
beskryf die ontwerp van 'n volledige ori entasiebepaling en -beheerstelsel vir CubeSats. 'n
Voorheen ontwikkelde CubeSat aanboordrekenaar, CubeComputer, en 'n fyn sonsensor en
nadirsensor, CubeSense, is ingesluit in die ontwerp. Die orige benodighede met verband
tot sensors en aktueerders word vervul deur CubeControl, 'n addisionele module waarvan
die ontwerp, vervaardiging en toetsing beskyf word. CubeControl kan magnetiese beheer
implementeer deur gebruik te maak van 'n magnetometer en drie magneetstange. Dit kan
ook drie reaksiewiele aandryf vir akkurate aktiewe 3-as stabilisering.
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