基于商用片上系统的小卫星能源管理单元设计  

Design of Energy Management Unit for Small Satellite Based on Commercial System on Chip

作　　者：苏蛟[1] 姚雨迎[1] 刘元默[1] 徐军[2] Su Jiao;Yao Yuyin;Liu Yuanmo;Xu Jun(DFH Satellite Co.Ltd.,Beijing 100094,China;Shanghai Institute of Space Power-Sources,Shanghai 200245,China)

机构地区：[1]航天东方红卫星有限公司,北京100094 [2]上海空间电源研究所,上海200245

出　　处：《计算机测量与控制》2019年第11期188-192,共5页Computer Measurement &Control

摘　　要：能源管理单元是卫星供配电分系统实现智能化信息采集和控制管理的关键部件;受小卫星本身机、电、热设计约束,提出一种基于商用片上系统(System on Chip,SoC)的能源管理单元设计,以提高系统功能密度,降低系统功耗;通过详细的软件冗余保护策略以及系统级安全模式设计,保证在不降低系统的可靠性的条件下采用低成本商用器件实现;通过9颗轨道高度500 KM^1100 KM卫星的在轨飞行验证表明,基于该设计的能源管理单元集成度高、功耗低,在轨稳定、可靠运行,相比于传统基于单片机/PROM的同等功能规模能源管理单元,重量和功耗分别降低75%和85.3%,适用于小卫星低成本、批量化快速生产。Energy management unit is the key component of satellite power supply and distribution subsystem to realize intelligent management and information collection.Constrained by the mechanical,electrical and thermal design of the small satellite,an energy management unit design based on the commercial System on Chip(SoC)is proposed,which can improve the functional density of the system and reduce the power consumption.Through detailed software redundancy strategy and system-level security mode design,the reliability of the system is not reduced although commercial device used.Nine satellite flights with orbital altitude of 500 km^1100 km show that the energy management unit designed in this paper has high integration,low power consumption and good stability.Compared with the traditional energy management unit based on single-chip microcomputer/PROM,the weight and power consumption are reduced by 75%and 85.3%respectively.The design is suitable for low-cost,batch production of small satellites.

关 键 词：商用片上系统 小卫星 能源管理单元 高功能密度 可靠性 

分 类 号：V423.44[航空宇航科学与技术—飞行器设计]