超小型人工衛星HIT-SATの姿勢制御系の開発  [in Japanese] Development of Attitude Control System for Pico-Satellite "HIT-SAT"  [in Japanese]

The HIT-SAT had been developed by Hokkaido in order to demonstrate the performance of the attitude control system for "Hokkaido Satellite". "Hokkaido satellite" is a 50kg small satellite, and the main mission is a remote sensing. The HIT-SAT is size 12cm cubed and weight 2.7kg. Attitude Control is an object of keeping satellite attitude by spin stabilization. It has three parts as de-spin, spin-up and sun acquisition. As an Attitude sensor, we adopt Sun sensor, Magnetometer, and GYRO. Actuator is 3-axis Magnetic Torquer. The HIT-SAT was launched successfully on September, 23, 2006(JST) as a sub-payload of M-V7 Rocket. In this paper, we described a design of attitude control system for the HIT-SAT and the result of experiment in orbit.