液浮陀螺仪过载振动复合环境试验

Environment effect and adaptability test on spaceflight fluid floating gyro under overload + vibration

为了验证航天飞行器惯性制导器件在过载振动复合环境下的环境效应和适应性能力,以液浮陀螺仪为研究对象,基于刚柔耦合的多体动力学理论,简要分析了过载振动复合环境对惯性器件的耦合影响机理。基于离心机-振动台综合离心试验平台,建立了惯性仪表过载振动复合环境试验方法,开发了惯性仪表过载振动复合环境试验专用采集系统,并开展了惯性仪表过载振动复合环境效应试验研究。试验结果表明,过载振动复合环境对惯性仪表输出值的影响具有耦合效应。因此,对惯性仪表类产品进行环境适应性考核时,应当使用与真实飞行环境更为一致的过载振动复合环境试验方法。

A fluid floating gyro is studied to validate the environment effect and adaptability of spaceflight inertia components under overload-vibration composite environment. The coupling mechanism of the environment effect is analyzed based on the coupled multi-body dynamics theory, then the overload-vibration composite environment test for inertial instrument is designed and carried out by using specially designed data collection system. Test results indicate that the load-vibration effects on inertial instrument output voltage have nonlinear coupling effect. Therefore, in evaluating the environmental adaptability of inertial instrument products, such overload-vibration composite environment test method should be used as it is more consistent with real flight environment.