GEO衛(wèi)星表面充放電引起衛(wèi)星地電位瞬變及對二次電源干擾試驗(yàn)研究

GEO satellite ground potential transients caused by surface charging&discharging and their interferences on secondary power supply

摘要: GEO衛(wèi)星帶電環(huán)境和表面絕緣材料相互作用引起衛(wèi)星表面充放電現(xiàn)象，導(dǎo)致衛(wèi)星“地”電位的緩慢變化和瞬態(tài)變化，其中瞬態(tài)變化會造成電子系統(tǒng)特別是數(shù)字電路工作異常。文章介紹實(shí)驗(yàn)室相關(guān)模擬試驗(yàn)研究情況，包括試驗(yàn)原理、試驗(yàn)系統(tǒng)組成、試驗(yàn)參數(shù)、結(jié)果分析以及“地”電位瞬態(tài)變化對星上二次電源輸出的影響，討論了空間ESD干擾防護(hù)方法。

Abstract: This paper presents the laboratory simulation of the effects of the spacecraft surface charging and discharging on the satellite structural ground potential, including the test principle, the experiments and the results, and offers some protective measures. The satellite structural ground potential is the reference potential for the satellite and it willinfluence the satellite's normal working condition. The ground potential transients wound interfere with the electronics, especially, the digital electronics. Based on this fact, an interference test method is developed. An experiment of the surface discharging was carded out to generate the structural ground outential transients and to study their effects on the output of a secondary power supply of a DC-DC converter.