微型航天器近旁操作地面仿真验证系统

微型航天器在交会对接、在轨服务等太空任务中所起的作用日益凸现,高精度地保证近旁操作的完成是实现其功能的关键.利用两套五自由度卫星模拟器,在一个面积为3m×4m的大理石试验台上,搭建了一套微型航天器近旁操作地面仿真验证系统.针对典型的近旁操作任务,进行了仿真实验.利用边缘检测等图像处理技术获得目标的相对位置信息,利用模糊控制方法实现了从航天器对主航天器的自主探测、自主接近和近旁保持.实验结果表明,仿真系统能够对近旁操作任务进行功能及原理的仿真验证,为进一步的工作奠定了基础.     

基于处理器在回路的卫星编队仿真验证系统

为了验证星载计算机的软/硬件性能,建立了以两个星载计算机为核心的卫星编队仿真验证系统。介绍了该系统的软、硬件构成,重点解决了动力学仿真机与星载计算机CAN总线双向数据传输、动力学仿真机以及星载计算机的进程同步、星载计算机的无线通信以及实时驱动STK场景动画显示等问题。在成功实现系统的基础上,进行了双星编队自主维持控制仿真。仿真结果校验了系统设计的合理性以及软硬件接口的正确性。

Abstract：

To verify the software and hardware performance of the on-board computer, a demonstration simulation system for formation flying satellites was established based on two on-board computers. The software and hardware architecture of the simulation system were introduced, and the key problems of the data communication between the dynamic simulation computers and the on-board computers via CAN bus, the synchronization of the dynamic simulation computers and the on-board computers, the wireless communication of the on-board computers, and the real-time visualization animation by driving STK were solved. Based on the developed processor-in-the-loop simulation system, the autonomous formation keeping control for dual satellites was performed. The simulation results demonstrate the validity of the simulation system and the correctness of the software and hardware interfaces.