一种应用SpaceWire总线的即插即用星载计算机体系结构设计OA

To address the limitations of long system integration cycle and difficult expansion caused by the heterogeneity of interfaces and software are protocols in traditional on-board com-puter(OBC),the technical system represented by the Space Plug and Play Electronic System Ar-chitecture(SPA)in the United States is studied,and a on-board computer architecture design scheme based on the SpaceWire bus is proposed in this paper.Firstly,the fundamental principles and implementation methodologies of plug-and-play technology are elaborated to ensure that the designed system is compatible with the SPA standard.Secondly,with the satellite attitude and control system(AOCS)as the application background,a proof-of-concept prototype is devel-oped,encompassing both hardware implementation and software architecture.To resolve univer-sality issues,an additional sensor interface module is designed.Furthermore,the synchronization network mechanism of the electronic system is improved using a SpaceWire time-code based de-sign.Finally,ground experiments demonstrate that the proposed architecture effectively sup-ports the rapid integration of on-board computers and enables stable closed-loop operation of the satellite AOCS.