基于固态功率控制器的器载配电器的BIT设计技术研究[BT)]

Research on BIT Design Technology of Power Distribution for Spacecraft Based on Solid State Power Controller

摘要:

航空航天飞行器发展迅速,用电设备数量增多,飞行任务复杂性增大,对飞行器配电系统的智能程度以及可靠性提出更高要求;配电器是配电系统的核心设备,为飞行器所有用电负载设备分配电能,其性能的优劣直接影响到飞行任务的成败,BIT(Built-In Test)技术是一种能够显著改善系统或设备测试性能和诊断能力的重要手段;研究了以固态功率控制器为核心器件的配电系统总体方案,对固态功率控制器的故障模式与测试方法进行了分析,给出了测试点设计和优选方法,通过故障诊断能力计算结果表明BIT设计技术可提高配电系统的可靠性和智能化程度。

Abstract:

The aerospace craft is developing rapidly , with the increase of the number of electrical equipment and the complexity of flight mission , the intelligence level and reliability of the aircraft power distribution system are facing higher requirements . The distributor is the core equipment of the distribution system, which distributes electric energy for all electric load equipment of the aircraft, and its performance directly affects the success or failure of the mission, the BIT ( built - in test ) technology is an important method to improve the performance and diagnostic ability of system or equipment . The overall scheme of the power distribution system based on the solid state power controller is studied , the failure modes and testing methods of the solid state power controller are analyzed, the design and optimization methods of test points are proposed , the calculation results of fault diagnosis ability show that BIT design technology can improve the reliability and intelligence of distribution system.