周边桁架可展开天线小冲击展开过程设计

摘要

提出了周边桁架可展天线展开过程的一种轨迹设计方法.通过优化方法选择贝塞尔曲线作为驱动索的输入运动轨迹,保证了展开角加速度的连续性并有效降低其峰值,从而达到了减小天线所受冲击的目标.通过数值仿真对比得出结论,天线的展开过程应是一个无中间匀速状态的先加速后减速过程.%A deployment trajectory design approach of the hoop truss deployable space antenna is proposed. Optimization method is used to select Bezier curves as the input motion trajectory of driving cable , which guarantees the continuity of deployment acceleration and efficiently reduces the peak value. As a result, the impact on aritennas is reduced. Numerical simulations demonstrate that the deployment should be an acceleration-deceleration process without mid-uniform-speed period.