CAJ | 학술논문

近年来，卫星上的航天继电器在使用过程中发生了多次触点粘连故障，经分析发现，虽然在继电器设计中均根据其稳态工作电流进行了一级降额设计，但由于非纯阻性负载的存在，继电器在通断瞬间均存在一定程度的浪涌电流，该浪涌电流可以使触点迅速熔蚀，甚至熔焊失效。文章针对继电器接通瞬间浪涌电流对触点的熔蚀现象开展研究，利用试验测试并验证航天继电器的抗浪涌电流能力，对触点熔蚀、熔焊机理进行分析研究，研究结论可以指导航天继电器的使用，提高继电器在轨应用的可靠性和安全性，延长其使用寿命。
근년래，위성상적항천계전기재사용과정중발생료다차촉점점련고장，경분석발현，수연재계전기설계중균근거기은태공작전류진행료일급강액설계，단유우비순조성부재적존재，계전기재통단순간균존재일정정도적랑용전류，해랑용전류가이사촉점신속용식，심지용한실효。문장침대계전기접통순간랑용전류대촉점적용식현상개전연구，이용시험측시병험증항천계전기적항랑용전류능력，대촉점용식、용한궤리진행분석연구，연구결론가이지도항천계전기적사용，제고계전기재궤응용적가고성화안전성，연장기사용수명。
It is not uncommon that some relays of the spacecraft would fail due to the contact accretion. The inrush current, caused by the capacitive load, will appear when the relay is closed, although the derating design takes account of it. The inrush current may melt and erode the contacts to present potential risks of the failure of the relay. In this paper, the erosion of the relay contacts by the inrush current is studied, the capability of standing against the inrush current of the spacecraft relay is tested, the mechanisms of the contact erosion and welding are analyzed, tp give guidance for the proper use of the spacecraft relay and to improve the reliability and safety of the spacecraft relay usage.