ABSTRACT
ABSTRACT: The ARINC659 bus is suitable for high security and high reliability requirements of the integrated and modular aircraft airborne computer communication system design. This paper analyzes the structure of the ARINC659 bus, window activity and sync mode, introduces the system architecture, the bus bridge mode, and the working principle of four redundancy computers which is composed of the ARINC659 bus as the core. Sync is the basis and core function of redundant fault-tolerant computer system data transmission and redundancy management. This paper analyzes the cause for clock drift and asynchronous degree in the process of initialization sync and resynchronization, designs task sync algorithm of system application level, and message sync algorithm of bus communication level.
