Abstract: Aiming at the steering control problem of the Stewart platform satellite after a large range of rapid maneuvering,a dynamics modeling and an integrated control method for attitude pointing of the Stewart platform satellite were proposed,which took into account the flexibility of the solar panel.The dynamics modeling and active control of Stewart platform satellite were investigated to improve this pointing accuracy of the platform load in such satellite.A rigidflexible coupling accurate dynamics model based on the fundamental principle of mechanics and the mixed coordinate method was established and a control design method considering platform load pointing and vibration isolation was presented.The numerical simulation results demonstrate that the established dynamics model can effectively describe the dynamics behavior of the system,and the control method can achieve higher attitude pointing accuracy.Compared with the situation without the control,the scheme can reduce the deformation of the supporting rod to one thousandth and ensure the structural safety.In addition,the effect of windsurfing flexibility on satellite attitude control of Stewart platform was also analyzed.The results show that the flexibility of solar panel has a great influence on the attitude accuracy of the lower platform and has a small effect on the attitude accuracy of the upper platform.

Key words: Stewart platform satellite, flexible solar panel, dynamics modeling, integrated control, vibration isolation