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针对带挠性帆板的卫星模型,分析了帆板在热作用下产生的准静态位移,并基于热-结构耦合分析建立了帆板受到突加热流时系统的动力学方程,采用加权余量法求解系统方程的近似解,从而得到帆板的运动及其引起的卫星姿态扰动。分析了帆板运动的稳定性,指出帆板阻尼系数、太阳照射角以及帆板的结构响应时间和热响应时间之比等参数决定了帆板的稳定性。数值仿真给出了帆板的运动特性及引起的姿态角误差,根据帆板运动的稳定判据,仿真结果给出了以系统参数为坐标的帆板运动稳定域。
Aiming at the satellite model with flexible windsurfing board, the quasi-static displacement of the windsurfing board under the action of heat is analyzed. Based on the thermo-structure coupling analysis, the dynamic equations of the windsurfing system subjected to sudden heat increase are established. The weighted residuals Method to solve the approximate solution of system equations, and get the windsurfing motion and the satellite attitude disturbance caused by it. The stability of windsurfing is analyzed, and the parameters of windshear damping coefficient, solar radiation angle and structure response time and thermal response time of windsailboard are given to determine the stability of windsurfer. According to the stability criterion of windsurfing, the stability of the windsurfing system with the system parameters as the coordinates is given.