在轨可更换单元的体系架构模型  

A Novel Architecture of Orbital Replacement Unit

作　　者：游红俊[1,2] 陈伟男[1] 周学功[3] 宋晓东 

机构地区：[1]复旦大学计算机科学技术学院,上海200433 [2]上海航天电子技术研究所,上海201109 [3]复旦大学专用集成电路与系统国家重点实验室,上海201203

出　　处：《小型微型计算机系统》2013年第11期2558-2563,共6页Journal of Chinese Computer Systems

摘　　要：在轨可更换单元(Orbital Replacement Unit,ORU)体系架构是航天器电子系统能够进行在轨模块内部更换的关键技术之一.传统航天器电子系统硬件模块单元不具备内部可更换性和可扩展性,难以满足航天器自主在轨服务期间单元内部功能改变和功能扩展的需求.提出一种在轨可更换单元体系架构模型.该架构基于多核技术,遵循模块化原则,对航天器电子系统ORU的可更换部分采用具备部分动态可重构(dynamic partial reconfiguration,DPR)的FPGA,将实现功能可变部分的硬件任务配置流作为资源,采用软硬件协同机制来对硬件任务进行替换和维护,为不同的在轨服务需求提供了实用解决方案.该模型可以实现硬件任务的动态管理,使在轨内部模块更换成为可能.Orbital replacement unit （ ORU ） of a spacecraft＇s electronic system is one of the key technologies for on-orbit internal mod-ule replacement. Traditional hardware module units of a spacecraft electronic system do not have the internal replacement and scal-ability, this technology is difficult to meet the needs of spacecraft internal function transformations and extensions during autonomous on-orbit service. A scalable architecture of orbital replacement unit is proposed for this demand. Based on multi-core, this architecture follows the design tenet of modules design. ORU of a spacecraft＇s electronic system can be designed with FPGA having the ability of dynamic partial reconfiguration. As a kind of resource, hardware task bitstream need to be managed. And hardware-software co-mechanism is used to manage hardware tasks＇ replacing and updating. A useful solution is provided for different requirements of on- orbit servicing. The proposed architecture can achieve a dynamic preventive maintenance of hardware tasks, making on-orbit internal module replacement possible.

关 键 词：模块级设计 体系结构 软硬件协同 可重构 

分 类 号：TP302[自动化与计算机技术—计算机系统结构]