CAJ | 학술논문

一般对星载计算机都要求可靠性高，重量轻，体积小，希望硬件设计尽量少用或不用冗余系统来保证可靠性. 研究尽量少采用硬件冗余而采用看门狗措施来保证星载系统可靠性的方法. 看门狗分为软件看门狗和硬件看门狗，分别设在星载机不同位置. 根据故障时间的长短，不同看门狗启动不同级别的保护措施. 系统采用先处理软件故障，后处理硬件故障，保护级别逐步升级策略. 提出了星载计算机五级保护策略和各保护级别的启动条件，对各种看门狗进行设计，并通过仿真实验证明了该方案的可行性.
일반대성재계산궤도요구가고성고，중량경，체적소，희망경건설계진량소용혹불용용여계통래보증가고성. 연구진량소채용경건용여이채용간문구조시래보증성재계통가고성적방법. 간문구분위연건간문구화경건간문구，분별설재성재궤불동위치. 근거고장시간적장단，불동간문구계동불동급별적보호조시. 계통채용선처리연건고장，후처리경건고장，보호급별축보승급책략. 제출료성재계산궤오급보호책략화각보호급별적계동조건，대각충간문구진행설계，병통과방진실험증명료해방안적가행성.
Presents the Spacecraft Computer System (SCS) based on 80386 specially designed for small explorer satellites（SES） and built with minimal hardware redundancy and watchdog strategy，which is implemented on SCS hardware and software with very minimal additional hardware/software and provides five levels of protection against processor faults and processor memory anomalies caused by software and/or hardware errors including Single Event Upset (SEU) and latchup.