High-Reliability Design Methods of the 1553B Bus Communication Software for Manned Spacecraft

High reliability is a key feature of the manned spacecraft's 1553B bus communication software, and it is the basis for the normal operation of the manned spacecraft's electronic system. To realize the high reliability of the 1553B bus communication software, five robust design methods, named “optimized initialization procedure”, “complete initialization action”, “reasonable data response modes”, “correct data access steps” and “defensive illegal data measures”, are proposed. These methods are applicable to a variety of manned spacecraft and can greatly improve the stability and reliability of the on-board electronic systems.