基于时间同步1553B协议的开关指令协同管理方法  

ON/OFF Command Collaborative Management Method Based on Time Synchronized 1553B Protocol

作　　者：兰天[1] 张溢 张亚航[1] 程博文[1] 汪路元[1] LAN Tian;ZHANG Yi;ZHANG Yahang;CHENG Bowen;WANG Luyuan(Beijing Institute of Spacecraft System Engineering, Beijing 100094, China)

机构地区：[1]北京空间飞行器总体设计部,北京100094

出　　处：《航天器工程》2021年第5期82-88,共7页Spacecraft Engineering

摘　　要：为充分利用智能化卫星综合电子系统资源,确保故障工况下的业务连续性,在系统层面实现高可靠开关指令发送控制。在设备内冗余的基础上,建立综合电子系统内设备间冗余,有效提升了可靠性。该方法发送开关指令时,需实现多设备间同步。针对这一需要,文章提出了一种基于时间同步1553B协议的指令协同管理方法。在星载软件中进行分布式指令协同管理,将指令发送与指令执行排布在不同通信帧内。星内总线控制设备负责分发开关指令给指令执行设备,各指令执行设备基于帧同步信号实现指令同步发送。经地面试验和在轨飞行验证,该方法在正常工况和故障工况下,均能正常输出脉冲宽度满足指标要求的开关指令。目前已在多颗智能卫星上得到应用,可为后续航天器设计提供参考。In order to make full use of the resources of avionics system of intelligent satellite and ensure the service continuity under the fault condition,the high reliability ON/OFF command sending control was fulfilled at the system level.Based on the redundancy within device,the inter-device redundancy within the avionics system is established,which improves the reliability effectively.This method needs to realize synchronization between multiple devices when sending ON/OFF command.To solve this problem,a command collaborative management method based on time synchronized 1553B protocol is proposed in this paper.Distributed command collaborative management is fulfilled in on-board software,and command sending and execution are arranged in different communication frames.The on-board bus control device is responsible for distributing the ON/OFF command to the command executing devices,and each command executing device implements synchronous instruction transmission based on the frame synchronization signal.The ground test and in-orbit flight verification show that this method can normally output the ON/OFF command with the required pulse width under both normal and fault conditions.It has been applied to many intelligent satellites,which can provide a reference for future spacecraft design.

关 键 词：航天器 综合电子 时间同步1553B协议 指令协同管理 

分 类 号：V446[航空宇航科学与技术—飞行器设计]