Stabilization of low-frequency vibrations of a large satellite structure with powered gyro control

This paper considers the feasibility of using a discrete-time proportional-plus-derivative (PD) algorithm as a control law of gyrodyns for eliminating the drawback of their frames precession in the stabilization mode of the angular position of a deformable spacecraft. Moreover, we analyze dynamics features of applying such approach to control orientation of the above class of spacecrafts under “infralow” (0.01–0.1 Hz) frequencies of flexible vibrations of their structure. Finally, the issues concerning organization of a subsystem of additional gyro stabilization for weakly damped low-frequency vibrations are treated.