连续旋转的光纤陀螺全温标度因数快速建模补偿方法  

Rapid modeling and compensation method for scale factor of FOG with continuous rotation

作　　者：张晓雅[1] 杨志怀[1] 宋丽薇[1] 马林[1] 

机构地区：[1]天津航海仪器研究所,天津300131

出　　处：《中国惯性技术学报》2016年第2期215-217,223,共4页Journal of Chinese Inertial Technology

基　　金：国防预研项目(51309010102)

摘　　要：在全温范围内应用的光纤陀螺,标度因数误差是其主要的误差之一。特别是在大角速率或者高精度应用时,光纤陀螺的标度因数误差甚至超过零偏漂移误差。在实际使用中,需对陀螺标度因数在全温范围内进行建模和补偿。对光纤陀螺标度因数误差机理进行详细分析后,提出了一种连续旋转的光纤陀螺全温标度因数快速建模补偿方法。基于单轴速率转台的连续旋转,可以自动快速完成标度因数全温建模且工程实现简单易行。更重要的是该方法可以有效识别标度因数在全温范围内的变化拐点,提高建模和补偿的精度。对比试验结果表明,采用此方法后能精确测得某型光纤陀螺全温工作的标度因数真实拐点为48℃,全温标度因数补偿精度优于15′10^(-6),较按照GJB2426-2004进行的多点测试后补偿提高10%左右。The scale-factor error is one of the major errors of FOG, especially when applied in full temperature. Its influences are more than those of bias error in large angular rate or high-precision applications, and therefore should be modeled and compensated in practical application. Based on the analysis of the scale factor＇s error mechanism, a modeling and compensation method for FOG scale-factor in full-temperature is presented based on a continuous rotation method, which is easier and more efficient. More importantly, the inflection points can be obtained effectively, and the precisions of the modeling and compensation will be improved. Experiment results show that the real inflection point, which is 48℃, of a certain type of FOG can be accurately measured. The compensation accuracy of scale factor error by this modeling method is better than 15′10^（-6）, which is improved by about 10%.

关 键 词：光纤陀螺 标度因数 温度建模 补偿 

分 类 号：U666.1[交通运输工程—船舶及航道工程]