针对挠性捷联惯组对振动环境敏感,在振动条件下动态精度差的特点,分析了其振动适应性,研究了在不同振动条件下的导航精度。指出了挠性捷联惯组振动适应性差的主要原因是挠性陀螺仪在振动条件下产生了附加漂移。精度振动导航试验结果表明,将挠性捷联惯组的振动衰减至1g左右,可以使挠性捷联惯组具有良好的“天-地”一致性。提出了提高挠性捷联惯组振动适应性的方法。

Concerning the problem that the flexible gyro SIMU is sensitive to vibration and its dynamic precision is low in vibration, the paper analyzed the adaptability of the flexible gyro SIMU and studied the navigation accuracy in various vibration conditions. It showed that the additional drift generated in vibration is the main cause of low vibration adaptability of the flexible gyro SIMU. The result of vibration navigation test showed the flexible gyro SIMU will be in good agreement between the ground experiment en-vironment and the flight environment when the flying missile's vibration is decreased to 1g or so. The method of improving the a-daptability under vibration environment is also presented.