Momentum Management Method for Pyramid Type Reaction Wheel on Geostationary Satellite

摘要

PURPOSE: Pyramid-type reaction wheel momentum management algorithm of a geostationary orbit artificial satellite is provided to automatically manage the reaction wheel algorithm by separately discriminating the momentum management algorithm at a dumping mode and a station keeping mode. CONSTITUTION: Pyramid-type reaction wheel momentum(W1,W2,W3,W4) management algorithm of a geostationary orbit artificial satellite automatically manages steps of deciding dumping execution by separating a stable region and a normal operation range for the current reaction wheel momentum, separately considering a thruster set for four reaction wheels, and then deciding a thruster set adequate to produce torque in 3-axis directions. At a station keeping mode, the pyramid-type reaction wheel momentum management algorithm of the geostationary orbit artificial satellite calculates a torque value to be controlled for disturbance, decides the dumping state when the reaction wheel momentum is not in the stable region, and executes attitude control, using reaction wheels when the torque direction to be controlled and the torque direction to be dumped are not coincided.