导弹与航天运载技术
導彈與航天運載技術
도탄여항천운재기술
MISSILES AND SPACE VEHICLES
2013年
1期
17-20
,共4页
可观测%微分信号%在线标定
可觀測%微分信號%在線標定
가관측%미분신호%재선표정
Observability%Derivative signal%On-line calibration
提出一种捷联惯导系统的陀螺零偏在线标定方法.在静止条件下采集惯导系统在两个近似水平位置输出的速度信息和方位信息,利用扩张状态观测器提取惯导系统速度误差的微分信息,通过算法估计陀螺零偏.仿真结果表明:该方法可行且标定精度能够满足捷联惯导的要求.实物验证表明:该方法实现简单,可有效估计陀螺零偏,提高惯导系统导航精度,为工程应用带来较大便利.
提齣一種捷聯慣導繫統的陀螺零偏在線標定方法.在靜止條件下採集慣導繫統在兩箇近似水平位置輸齣的速度信息和方位信息,利用擴張狀態觀測器提取慣導繫統速度誤差的微分信息,通過算法估計陀螺零偏.倣真結果錶明:該方法可行且標定精度能夠滿足捷聯慣導的要求.實物驗證錶明:該方法實現簡單,可有效估計陀螺零偏,提高慣導繫統導航精度,為工程應用帶來較大便利.
제출일충첩련관도계통적타라령편재선표정방법.재정지조건하채집관도계통재량개근사수평위치수출적속도신식화방위신식,이용확장상태관측기제취관도계통속도오차적미분신식,통과산법고계타라령편.방진결과표명:해방법가행차표정정도능구만족첩련관도적요구.실물험증표명:해방법실현간단,가유효고계타라령편,제고관도계통도항정도,위공정응용대래교대편리.
The paper presents an on-line calibration method for on-board strap-down inertial navigation system. The derivatives of the velocity error signals can be obtained by the Extended State Observer (ESO) through collecting the static velocity and the azimuth signals from the inertial navigation system in two approximately horizontal positions. The errors of gyro could be estimated by the algorithm designed. The simulation result shows that this method is feasible and its precision is acceptable. It is proved by the field test that this method is easy to be implemented and could perform gyro self-calibration effectively. At the same time, this method could improve the precision of the navigation and bring great convenience for engineering application.
