INITIAL DETUMBLING AN NITIAL AND WHEEL START D START-UP STRATEGY FOR HAUS HAUSAT AT-2 WITHPITCH BIAS MOMENTUM SYSTEM

摘要

The HAUSAT HAUSAT-2 is a 25 25kg class kg micro/ nanosatellitewhich is being developed by graduate students at theSpace System Research Lab Laboratory oratory (SSRL) SSRL). This paperaddresses a newly proposed strategy for detumbling theHAUSAT HAUSAT-2 and starting up a momentum wheel, andalso studies performance validation and applicationrange ranges of such method through simulation. B B-dot logicis generally used for controlling the initial tip tip-off rate rate.However, it has the disadvantage of taking a relativelylong time to control the initial tip tip-off rate. To solveth this is problem, this paper suggests a new detumblingcontrol method to be able to adapt to micro/ nanosatell nanosatellite itewith the pitch bias momentum system system, and has shown, simulation results. Proposed detumbling method wasable to control the angular rate within 20 minutes whichis a significant reduction compared to conventionalmethods. In addition, the momentum wheel initial start start-up must be done under stable conditions, andconventional pitch spin spin-stabilized initial wheel start start-upmethod is commonly used. The performance of themethod is compared and verified through simulation.The overall result shows much faster co control timentrol compared to the conventional methods, and achievementof the nominal wheel speed and 3 3-axes stabilizationwhile maintaining stability.