摘要
针对捷联惯导系统中光纤陀螺零偏在快速启动和不同温度条件下漂移较大的问题,从理论和大量试验上研究了其静态时、温漂特性,建立了影响导航系统姿态精度的温度漂移误差补偿的数学模型,并给出了模型参数。试验结果表明,该光纤陀螺零偏的温度输出特性具有较好的重复性,补偿后其在全温工作范围内的航向和姿态保持精度达到0.5(°)/300 s,较补偿前提高了60%以上,并将准备时间由原来的3 min缩短到10 s内,满足某型弹载系统要求。
Aimed at the problem of the zero drift of the fiber gyros in INS under the conditions of various temperature and quick turn-on, the static time and temperature characteristic are studied through theory and experiments. The error model was established to compensate the drift and also the parameters were given in details. Tests showed that the static drift characteristic of the fiber gyros is repeated well. After compensating, the azimuth and attitude of the gyro working in the whole temperature range reaches 0.5（°）/300 s, increasing more than 60%. And the preparation time reduced from 3 minutes to 10 seconds, which meets the demand of the relevant system＇s demand.
出处
《压电与声光》
CSCD
北大核心
2009年第4期472-475,共4页
Piezoelectrics & Acoustooptics
