Abstract:

A spacecraft attitude integration method of measurement and control in two degree of freedom based on micro framework ability of magnetically suspended rotor is proposed. When the frame of magnetically suspended control moment gyroscope (MSCMG) is motionless, through realtime detecting magnetic bearing current and rotor displacement, get spacecraft roll and yaw axis angular velocity. Then the spacecraft attitude dynamics equation by the control of the magnetically suspended rotor is established. According to this equation and the measured angular velocity, design the attitude decoupling control law to make rotary spindle of magnetically suspended rotor deflect with a certain angular velocity in magnetic gap range and produce required radial output torque in two degree of freedom, so as to regulate roll, yaw axis attitude of spacecraft. Simulation results show that this method can complete spacecraft attitude adjustment in two degree of freedom. Micro framework torque has advantages of high precision, and can realize spacecraft attitude control of small angle in mobile terminal.