CAJ | 학술논문

目前国际上的激光陀螺单轴旋转式惯导系统中,普遍采用一种四位置转停的惯性测量组合转动方案.通过对这种四位置转停方案的误差分析,指出它并不能够完全抵消掉转轴垂直平面内的所有陀螺常值漂移误差,并且载体航向变化会降低误差抵消的程度,基于此,在这种四位置转停方案基础上,首先提出了一种改进的四位置转停方案,可以抵消掉转轴垂直平面内的所有陀螺常值漂移误差,然后进一步提出了一种动态调整停止时间的四位置转停方案,使转轴垂直平面内的常值漂移误差的抵消程度不受载体航向变化的影响.分析表明,文中提出的这些改进措施和方法能够提高系统精度,而不会降低系统的可靠性,并且使用简单易行,可以应用于实际的单轴旋转式惯导系统中.
목전국제상적격광타라단축선전식관도계통중,보편채용일충사위치전정적관성측량조합전동방안.통과대저충사위치전정방안적오차분석,지출타병불능구완전저소도전축수직평면내적소유타라상치표이오차,병차재체항향변화회강저오차저소적정도,기우차,재저충사위치전정방안기출상,수선제출료일충개진적사위치전정방안,가이저소도전축수직평면내적소유타라상치표이오차,연후진일보제출료일충동태조정정지시간적사위치전정방안,사전축수직평면내적상치표이오차적저소정도불수재체항향변화적영향.분석표명,문중제출적저사개진조시화방법능구제고계통정도,이불회강저계통적가고성,병차사용간단역행,가이응용우실제적단축선전식관도계통중.
At present, the conventional 4-position rotation-stop scheme is widely utilized in single-axisindexing RLG INS. However, its error propagation analysis shows that this 4-position rotation-stop scheme cannot completely remove the constant drifts of the gyros which are assembled in the plane perpendicular to the rotation axis, and the heading changes of the carrier body may also deteriorate the compensation effects. This paper proposes an improved 4-position rotation-stop scheme, which can remove all the constant drifts of the gyros assembled in the plane perpendicular to the rotation axis. Based on this, a 4-position rotation scheme with dynamic stop time is proposed, which can remove the influences of the body heading changes to the compensation effects. The analysis results indicate that these proposed measures and approaches, which could guarantee the system reliability and improve the system accuracy,can be easily implemented and applied in the real single-axis indexing INS.