Identification of Unknown Inertia Parameters of Spacecraft and Spacecraft Hovering

It is necessary to know the inertia parameters of the spacecraft when the spacecraft attitude is controlled accurately in space. So it is very important to identify the moment of inertia of the spacecraft. In this paper, the satellite simulator (air floating platform) is studied. When the actuator provides stable thrust, the angular velocity generated by the open-loop control is measured by the sensor, and the collected data is filtered and fused to obtain an accurate moment of inertia. The digital PID simulation was carried out recently. According to the controller used in the simulation, the satellite simulator physical experiment was carried out. The experimental results verified the accuracy of the identification of the moment of inertia.