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针对耦合影响较严重的天线回扫过程展开研究.首先,将柔性支撑杆等效简化为悬臂梁结构,并基于拉格朗日方程建立多体耦合动力学模型.然后从耦合动力学模型出发,分析天线回扫运动对星体姿态稳定和柔性振动的影响,并根据分析结果引入命令预处理算法,规划天线回扫指令.最后对天线回扫运动进行仿真分析,仿真结果表明命令预处理算法能够有效地减小回扫运动对星体姿态稳定和柔性振动的影响.
Aiming at the problem that the coupling effect is more serious, the fly-back process of the antenna is studied.Firstly, the flexible support rod is simplified as the cantilever structure and the multi-body coupling dynamics model is established based on the Lagrange equation.From the coupling dynamics model, The influence of the fly-back motion of the antenna on the attitude stability and the flexible vibration of the celestial body is analyzed. The command preprocessing algorithm is introduced according to the analysis result to plan the antenna flyback instruction. Finally, the fly-back motion of the antenna is simulated and analyzed. Reduce the impact of fly-back motion on the attitude stability and flexible vibration of stars.