一、前言宇航器的制导和稳定系统在振动试验时出现的故障,在整个环境试验故障中占的比例较大,这意味着慎重制订试验条件对宇航器的研制有重要意义。如果试验条件订得过高,会增加研制成本,延长研制周期;订得过低试件就得不到应用的考验而使可靠性下降。一个好的 I. Preface The failure of the guidance and stabilization system of the spacecraft during the vibration test accounts for a large proportion of the total environmental test failures, which means that it is of great significance to carefully develop the test conditions for the development of the spacecraft. If the test conditions set too high, will increase the cost of development, to extend the development cycle; set too low test pieces will not get the test of application and the reliability of the decline. A good one