基于常规环境试验装备的HALT技术应用研究

Research on Routine Environmental Test Equipment Application of HALT Technology

目的探索军用装备极限边界条件考核试验方法。方法引入HALT技术,在前期装备试验各类故障案例统计的基础上,选择装备上应用普遍和故障发生较频繁的继电器为研究对象,探索应用常规环境试验设备,设计HALT试验,研究继电器极限边界条件下可靠性考核的技术和方法。结果在进行低温–30℃和高温70℃步进应力以及在–70~120℃内进行快速变温试验时,电磁继电器的各检测数据正常;而在振动步进试验过程中,采用正弦定频试验,初始加速度值为5g,步进值为5g,在达到30g时,固态继电器出现故障。结论常规试验装备可以进行HALT试验,通过继电器的HALT试验结果,获得两种型号继电器的低温操作极限为–70℃,高温操作极限为120℃,振动工作极限为50 Hz、30g。

In order to explore the test method of military equipment limit boundary conditions. The HALT test technique is introduced in this paper. Based on the statistics of all kinds of fault case in the early equipment test, the relay which is widely used in the equipment and has frequent faults is selected as the research object. It explores the application of conventional environmental test equipment, designs halts test, and studies the technology and method of reliability assessment of relay under limit boundary conditions. When the low temperature –30 ℃ and high temperature 70 ℃ step stress are carried out, as well as the temperature range from –70 ℃ to +120℃, the detection data of electromagnetic relay are normal;In the vibration step test, sine constant frequency test is used. The initial acceleration value is 5 g, and the step value is 5 g. When acceleration is 30 g, the solid state relay fails. The conventional test equipment can carry out halt test. Through the halt test results of the relay, the low temperature operation limit of the two types of relays is –70 ℃, the high temperature operation limit is 120 ℃, the vibration working limit is 50 Hz, 30 g. The failure analysis and temperature/vibration comprehensive test will be continued in the follow-up,and the test design method and test method will be explored and improved.