航天器组合体能量平衡分析系统设计及应用

Design and Implementation of Energy Balance Analysis System for Spacecraft Combination

针对航天器组合体的任务特点,提出了适用于组合体飞行、电源系统并网运行的能量平衡分析方法,并在此基础上设计了能量平衡分析系统。该系统包括能量平衡分析及实时监控两个模块,其中:能量平衡分析模块通过遮挡计算输出精确的太阳电池阵发电能力,利用实时负载状态及飞行程序计算航天器负载变化,并内嵌有应对长期在轨运行电源系统性能衰降问题的用户数据交互界面,同时考虑并网功率以及电源系统正常、故障多种工作模式,保证能量平衡计算精确度;实时监控模块将航天器在轨运行实时下传数据与理论分析值同步显示,可读性高,便于及时发现问题。文章设计的系统应用于2次交会对接飞行控制任务中,其计算效率高,精度高,为电源系统使用规划提供了理论基础。

This paper proposes a new energy balance analysis method applicable to spacecraft com bination and parallel operation between power systems. Based on this method, an analysis system is designed. This system includes two modules of energy balance analysis and real-time monito- ring. Energy balance analysis module can output accurate solar array＇s generating capacity based on occlusion calculation, and real-time load status and fight program are used to calculate load value of combination. User data interface is embedded to cope with the decline of power system performance for long-term on-orbit running, and furthermore, parallel power supply and multiple operating modes of power system are taken into account to ensure accuracy of energy balance cal- culation. In real-time monitoring module, on-orbit downlink data and theoretical values are dis- played synchronously, so they are readable and convenient for finding problems in time. This system has been applied in rendezvous and docking flight task twice, and can provide theoretical basis for usage plan of power system owing to its high computational efficiency and precision.