摘要: 提高温度特性是光纤陀螺仪工程化的一个难题, 温度补偿是解决该问题的一种有效方法。光纤陀螺与温度相关误差项主要为零漂和标度因数, 输入轴失准角也是影响光纤陀螺应用的一个重要误差项。在大量试验的基础上, 分析了光纤陀螺输入轴失准角误差产生机理, 采用多项式拟合方法建立了输入轴失准角误差全温模型, 对多套光纤陀螺进行了全温补偿。试验结果表明, 输入轴失准角补偿前全温变化在rad数量级, 补偿后全温变化小于精度提高了近一个数量级, 大大提高了光纤陀螺仪的全温性能。 [2)Y0; ["
关键词: ; 光纤陀螺仪; 输入轴失准角; 温度补偿 v,+2CVdW
中图分类号: V241. 5 文献标识码: A文章编号: 1000- 8829( 2010) 10- 0006- 03 rf)\:75
Temperature Compensation Research on InputAxisMisalignment of FOG Z"e|DP`
JI Sh i..tao1, QIN Yong..yuan1,LAN Yan2, L IU Zh i..rong2 qr<5z. %
( 1.Schoo l o f Autom ation Contro,l Northw este rn Po lytechn icalUn iversity, X i! an 710072, <st1:country-region w:st="on">China; 'ky'GzX,
( 2.Institute No. 16 o f Ch ina Ae rospace Sc ience and Technology Corpo ration,Xi! an 710100, <st1:country-region w:st="on">China) UnW,|n8
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Abstract: Improv ing thetemperature performance is a difficult prob lem in fiber..opt ic gyro(FOG ) engineering.Temperature compensation is an effectivemethod for so lv ing the prob lem. The errors of FOG involved w ith tem..perature are zero b ias and sca le factor.Input ax ism isa lignm ent is ano ther important errorw ith temperature. On the basis o fmany experiments, theme chanismis ana lyzed, the input ax ism isa lignmen t! s fu ll sca le temperature errormode l is established by using polynomial fitting method. The fu ll scale temperature compensat ions for some FOGs are carried out. The experim entresult show s that input ax ism isa lignmen t can be improved from a.. A`X$jpAn&
bout 2 10- 3 rad to less than 3 10- 4 rad.The prec ision can be improved about a quantitatively leve.l The fu ll..scale temperature performance o fFOG is improved.
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Key words: inertia dev ice; fiber..opticgyro; input ax is m isa lignmen;t temperature compensation