VIRTUAL REACTION WHEEL ARRAY USING CONTROL MOMENT GYROS

摘要

An attitude control system (ACS) for a spacecraft includes an attitude control assembly (ACA) interface (316), a control moment gyro (CMG) array (314) and a reaction wheel assembly (RWA) control unit (202). The ACA interface (316) converts torque commands received from the RWA control unit (202) into CMG gimbal rates for the CMG array (314). The ACA interface receives CMG gimbal angles from the CMGs and converts the CMG gimbals angles into RWA speeds, which are then provided to the RWA control unit (202).