可変速1軸ジンバルCMGによる宇宙機の指向制御

抄録

The objective of this study is spacecraft pointing control using a Variable-speed Single-gimbal Control Moment Gyro(VSSGCMG). A VSSGCMG is an attitude control device that consists of a variable-speed rotor and one gimbal. A gyroscopic torque is produced by tilting a rotor and a reaction torque is produced by changing a rotational speed. Thus, a VSSGCMG has two degrees of freedom. Pointing control is to align a certain axis of a spacecraft in an arbitrary direction, and it needs two degrees of freedom. Therefore, the pointing control can be achieved by a VSSGCMG. In this paper, we have proposed a pointing control law by using new parameters to express pointing errors. The validity of the proposed control law is verified by numerical simulations and a hardware experiment.