关键词: 挠性航天器, 姿态控制, 主动振动控制, 自耦PD控制

Abstract: Aiming at the problems of high precision attitude control and active vibration suppression of flexible spacecraft with uncertain model parameters and external interference, a simple ACPD (auto coupling proportional derivative) control method was proposed based on the ACPID (auto coupling proportional integral derivative) control theory. The known and unknown internal dynamics and external disturbances of the attitude motion of a flexible spacecraft are defined as a total disturbance, which is equivalent mapped to a second order linear disturbance system. Based on this, the controlled error system under the combined total disturbance reversed phase excitation is constructed, and the ACPD attitude controller and the ACPD active vibration controller are designed respectively according to the ACPID control theory. The robust stability and antidisturbance robustness of each system are analyzed. The simulation results show that the ACPD attitude controller has good tracking performance for the attitude angle instruction, and the ACPD active vibration controller can effectively suppress the vibration of flexible accessories.

Key words: flexible spacecraft, attitude control, active vibration control, ACPD control