摘要
针对MEMS陀螺误差大的问题,提出了机载灵巧弹药MEMS陀螺漂移的快速估计算法。首先建立简化MEMS陀螺误差模型,提出HMM/RLS算法的零时延随机漂移处理算法,以解决FIR、HMM/KF等处理方法在滤波时延和效果上的矛盾。然后由弹载MEMS陀螺测量误差和安装角误差耦合得到参数区别,由此推导出快速MEMS陀螺零偏快速两点估计算法。该算法能在2.5 s内完成对MEMS陀螺零偏的估计补偿,其估计准确度达到90%以上。数学仿真和靶试数据处理的结果表明:HMM/RLS可以达到随机漂移处理的零时延,并兼顾了滤波时延和带宽。
A bomb-borne MEMS gyro drift fast estimation algorithm of airborne smart bomb(SSB)for aircraft was presented to solve the large MEMS gyro error.Firstly,simplified MEMS gyro error model had been established,HMM/RLS no-delay pretreatment algorithm of gyro drift had been presented to solve the conflict about time delay and bandwidth of FIR or HMM/KF method.Then,the parameter difference due to MEMS measurement error and fix error angle of aircraft and bomb,which could be utilized to reckoned the rapid 2 points estimation algorithm of MEMS drift.The MEMS drift could be estimated and compensated in 2.5 s based on the presented method,and the accuracy can be obtained up to 90 percent.The simulation and experiment result proved that HMM/RLS method was a non-delay drift processing method,which could make a balance between the time delay of filter and bandwidth of signal.
作者
米长伟
毕建宏
吴旭
宋立平
Mi Changwei;Bi Jianhong;Wu Xu;Song Liping(Department of Guidance&Control Technology,Aviation Ammunition Institute of China North Industries Group Corporation Limited,Harbin 150036,China;Department of Mathematics,No.12 High School,Harbin 150056,China)
出处
《兵工自动化》
2019年第3期35-38,48,共5页
Ordnance Industry Automation
基金
总装预研项目(41415040102)
总装预研项目(6141B010205)
关键词
机载武器
灵巧弹药
传递对准
随机漂移
零偏
airbone weapon
smart bomb
transfer alignment
random drift
zero drift
