某箭载指令接收机继电器触点粘连问题分析  

Contact Adhesion Problem Analysis of Command Relay in a Rocket-borne Command Receiver

作　　者：刘来方[1] Liu Laifang(Southwest China Institute of Electronic Technology,Chengdu Sichuan,610036)

机构地区：[1]中国西南电子技术研究所,四川成都610036

出　　处：《电子测试》2021年第21期39-42,共4页Electronic Test

摘　　要：某箭载指令接收机在总装厂房进行单元测试时出现指令继电器触点粘连问题,分析了浪涌电流冲击是导致故障的直接的原因,进一步的发现,浪涌电流来源于地面指令检测电路,地面指令检测电路设计缺陷造成了箭上指令接收机常开触点烧蚀、粘连。通过建立电路的数学模型,对造成触点粘连的电路参数进行计算,最后通过搭建具体电路对计算情况进行了试验验证,提出了电路改进措施。The contact adhesion problem of command relay occurred during the unit test of a rocketborne command receiver in the general assembly plant.It is analyzed that surge current impact is the direct cause of fault.It is further found that the surge current comes from the ground command detection circuit.The design defect of the ground command detection circuit causes the ablation and adhesion of the normally open contact of the command receiver on the rocket.The mathematical model of the circuit is established,and the circuit parameters that cause contact adhesion are calculated.Finally,the calculation is verified by building a specific circuit,and the circuit improvement measures are proposed.

关 键 词：继电器 触点粘连 浪涌电流 电容放电 

分 类 号：TM58[电气工程—电器]