航天器热试验电源健康管理系统的设计与实现

Design and implementation of power supply health management system for spacecraft thermal test

摘要:

航天器热试验对程控电源的数量需求规模较大,电源以机柜阵列形式进行配置,其运行状态的稳定性将直接影响试验的安全性与可靠性。本文对热试验用程控电源的健康管理技术进行研究,以Agilent N5750型电源为研究对象,基于程控电源历史故障类型分析,对程控电源故障检测技术进行研究,并结合电源冗余切换技术,设计电源在线切换装置。通过试验验证,该系统能够快速实现在用电源的故障检测定位,并能够在秒级时间内完成故障电源向备用电源的在线切换,系统全部工作周期小于3s,实现了控温系统大规模电源阵列的智能健康管理,提高了航天器热试验控温系统的运行可靠性。

Abstract:

The thermal test of spacecraft has a large demand for the program-controlled power supply, and the power supply is configured in array. Its operation state is affects the reliability of spacecraft thermal test greatly. In this paper, the health management technology of program-controlled power supply is researched and Agilent N5750 power is used as the research object. Combining the analysis of the history fault type of power supply, the fault detection technology of power supply is studied. Then, combined with the technology of power supply redundancy switching, an on-line switching device is designed. Through the verification experimental, the experimental results show that this system can quickly realize the detection and positioning of the fault power supply, and can finish the online switching of the fault power supply to the backup power within the second-level time. The system can complete the fault detection and online switching in 3 seconds. The research enhances the health management efficiency of the large scale array power supply, and improves the operational reliability of the spacecraft thermal test.