摘要: 提高溫度特性是光纖陀螺儀工程化的一個(gè)難題, 溫度補(bǔ)償是解決該問題的一種有效方法。光纖陀螺與溫度相關(guān)誤差項(xiàng)主要為零漂和標(biāo)度因數(shù), 輸入軸失準(zhǔn)角也是影響光纖陀螺應(yīng)用的一個(gè)重要誤差項(xiàng)。在大量試驗(yàn)的基礎(chǔ)上, 分析了光纖陀螺輸入軸失準(zhǔn)角誤差產(chǎn)生機(jī)理, 采用多項(xiàng)式擬合方法建立了輸入軸失準(zhǔn)角誤差全溫模型, 對(duì)多套光纖陀螺進(jìn)行了全溫補(bǔ)償。試驗(yàn)結(jié)果表明, 輸入軸失準(zhǔn)角補(bǔ)償前全溫變化在rad數(shù)量級(jí), 補(bǔ)償后全溫變化小于精度提高了近一個(gè)數(shù)量級(jí), 大大提高了光纖陀螺儀的全溫性能。 2iYf)M C
關(guān)鍵詞: ; 光纖陀螺儀; 輸入軸失準(zhǔn)角; 溫度補(bǔ)償 @.T( \Dq^
中圖分類號(hào): V241. 5 文獻(xiàn)標(biāo)識(shí)碼: A文章編號(hào): 1000- 8829( 2010) 10- 0006- 03 5RCZv\Wd&
Temperature Compensation Research on InputAxisMisalignment of FOG }>Gnp c
JI Sh i..tao1, QIN Yong..yuan1,LAN Yan2, L IU Zh i..rong2 L8("1_
( 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; } YH@T]O}
( 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) 6Y<'Lyg/
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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.. 28>PmH]7
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. m`l3@ Z
Key words: inertia dev ice; fiber..opticgyro; input ax is m isa lignmen;t temperature compensation
