小卫星星载容错计算机控制系统软硬件设计

创新一号低轨存储转发通信小卫星是中国第一颗重量在100公斤以下的小卫星，介绍了其星载计算机系统的设计方案。由于卫星采用了计算机集中管理方式，为保证星载计算机的可靠性，设计中对硬件使用了双计算机热备份冗余设计，星载计算机的可靠性同时通过软件和硬件协同容错设计来实现。卫星的星务管理、遥测、遥控、姿态控制、电源管理、通信控制、轨道控制等都需要通过计算机软件完成，介绍了这些软件的主要功能和容错设计。创新一号星载计算机采用了多项新技术，并经过了一年多的飞行测试验证，达到了预定的运行目标，星载计算机圆满完成了各项设计功能，证明了卫星计算机系统的安全可靠。

The Fault-Tolerant Design of Software/Hardware for On-Board-Computer Control System of Micro-Satellite

ChuangXin-1 communication micro-satellite is the first micro-satellite under 100kg of china.This thesis introduces its OBC (on-board-computer),the micro-satellite adopts centralized computer to control.We use standby redundant computer system and fault-tolerant software/hardware co-design method to improve the reliability.Most of functions need software to achieve,including on board data handling,telemetry,telecommand,attitude control,power control,orbit,communication,etc.The thesis introduces the main function and fault-tolerant design of the software.After one year's failure free running,the satellite fulfill the expectation aim,the OBC do good job as desire,so the design of OBC is safe and reliable.