4 . the three - axis attitude stabilization system of the flexible satellite has been studied , in which three basic vibration modes of the solar array have been considered 4 、在撓性衛(wèi)星動力學(xué)模型的基礎(chǔ)上,建立了只考慮太陽帆板三階振動模態(tài)的撓性衛(wèi)星三軸姿態(tài)控制模型。