一、问题的提出某导弹测试车中JWK—30测试仪无论在该仪器的制造厂、导弹总装厂、修理厂和导弹部队的使用过程中,都存在一个突出的问题即连续工作时间短的问题,其重要原因之一,系由于振荡器组合出故障的概率最大,而该组合中尤为突出的是小功率金属陶瓷管FM—110(以下简称“管子”)的连续工作寿命短,使整个测试仪无法工作。 First, the issue put forward A missile test vehicle JWK-30 tester both in the instrument manufacturer, the missile assembly plant, repair shop and the use of missile forces in the process, there is a prominent problem that continuous short working hours , One of the important reasons is that the probability of failure of the oscillator combination is the largest. What is particularly prominent in this combination is the short continuous service life of the low-power cermet FM-110 (hereinafter referred to as “tube”), so that the entire test The meter does not work.