CAJ | 학술논문

为提高光纤陀螺精度,需要对其随机误差进行精确建模.以VG941-3AM微型精密光纤陀螺仪为实验研究对象,进行了数据采集、预处理和平稳性检验.将基于残差序列最小自相关原理的LAC(least-autocorrelation)准则及其递推算法,应用于光纤陀螺随机误差模型的辨识.建立了ARMA模型的状态方程和观测方程,设计了Kalman滤波器.实验结果证明了算法的有效性和准确性,处理后的光纤陀螺随机误差减小了95～97%.
위제고광섬타라정도,수요대기수궤오차진행정학건모.이VG941-3AM미형정밀광섬타라의위실험연구대상,진행료수거채집、예처리화평은성검험.장기우잔차서렬최소자상관원리적LAC(least-autocorrelation)준칙급기체추산법,응용우광섬타라수궤오차모형적변식.건립료ARMA모형적상태방정화관측방정,설계료Kalman려파기.실험결과증명료산법적유효성화준학성,처리후적광섬타라수궤오차감소료95～97%.
In order to improve the precision of fiber optic gyro (FOG), the random error model of FOG should be established accurately. VG941-3AM micro precision fiber optic gyros were chosen as experimen-tal subjects. Data acquisition, pretreatment and stationarity test were carried out. Based on the least-auto-correlation principle of residual sequence, the least-autocorrelation (LAC) criterion and its recursive algo-rithm were applied to the identification of random error models of gyros. The state equation and observa-tion equation of the ARMA models were established, and Kalman filter was designed. The experimental results proved the validity and veracity of the algorithm. The random error of fiber optic gyros using the a-bove method was reduced by 95～97%.