The design of AOCS software architecture in micro-satellite using software bus

A new attitude and orbit control system (AOCS) software architecture is presented in this paper by using the concept of software bus. According to the analysis of the function flow and data flow of AOCS, its software components are partitioned clearly under the rule of function cohesion and data cohesion, and each component data interaction standard interface is determined as well. Based on such kind of partition, a series of software components with single function are developed to build a component library, which is used for function configuration of AOCS software. Finally, using this library, desired AOCS software can be integrated to follow the mission requirement. During the integration, the software bus is chosen as the communication style of the software architecture to dispatch and manage the components of the software.