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DTUsat-1: Attitude Control
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Attitude Control


The Attitude Control and Determinination System (ACDS) group has the repsonsibility of stabilising the satellite - that is making sure the correct side points towards the Earth. For this task the group is dealing with both hardware and software issues.

Attitude control is accomplished by using magnetorquers. The attitude is determined by using 5 sun angle sensors, one on each face of the satellite except the payload face. The sun angle sensors are developed in MOEMS, micro optic electronic mechanical system, technology as part of the DTUsat project. A magnetometer is also included for measuring the strength and direction of the magnetic field. The magnetometer is built from 4 Honeywell sensors for redundancy. Even if one fails, it is still possible to get information on all vector composants of the magnetic field.