减振系统造成捷联惯性导航误差的有限元分析方法  

FEA Method for Analysis of SINS Error Caused by Vibration Isolation System

作　　者：高军强[1] 汤霞清[1] 黄湘远[1] 程旭维[1] GAO Jun-qiang TANG Xia-qing HUANG Xiang-yuan CHENG Xu-wei(Department of Control Engineering, Academy of Armored Force Engineering, Beijing 100072, China)

机构地区：[1]装甲兵工程学院控制工程系,北京100072

出　　处：《兵工学报》2016年第9期1570-1577,共8页Acta Armamentarii

基　　金：军队科研计划项目(2011年)

摘　　要：为研究减振系统由于破坏捷联惯性导航与载体之间固联关系而造成的惯性导航测量误差,分析误差机理,提出一种基于有限元的分析方法。在有限元软件中建立带减振器的捷联惯性导航系统模型,利用轨迹发生器生成的运动参数,对载体及惯性导航系统运动过程进行仿真。仿真结束后,从有限元分析结果中提取惯性器件测量数据,经导航解算,得到减振系统造成的惯性导航误差。研究结果表明,有限元分析方法能够实现减振系统造成惯性导航误差的定量分析,使得可以从捷联惯性导航测量精度的角度进行减振系统优化设计。In order to study the strapdown inertial navigation system （SINS） error caused by vibration isolation system which breaks the fixed connection between SINS and carrier, the error mechanism is analyzed, and an analysis method based on finite element analysis （FEA） is proposed. A model of SINS with vibration isolation system is constructed in FEA software. The motion parameters generated by trajectory generator are used to simulate the motion processes of carrier and SINS. The measured data of inertial devices obtained from the FEA results can be used to resolve and acquire the SINS error caused by vibration isolation system. The research results show that the FEA-based method can realize the quantitative analysis of SINS error caused by vibration isolation system, which is very important for optimization design of vibration isolation system.

关 键 词：兵器科学与技术 捷联惯性导航系统 减振系统 误差 有限元分析 

分 类 号：TJ819[兵器科学与技术—武器系统与运用工程]