平台惯导系统中杆臂效应误差的研究与分析

Research and Analysis on Error Caused by Lever Arm Effect in Platform Inertial Navigation System

杆臂效应误差是由于惯性测量组件安装位置与飞行器质心不重合而引起加速度计输出中的附加干扰加速度，它是惯导系统的主要误差源之一。本文从理论上系统、深入地分析了杆臂效应误差对导航系统精度的影响，并针对几种情况对系统进行了仿真。

Lever arm effect error,resulted from non-conformity of mounted position of the inertial measuring unit and center of mass of a vehicle causes an additional interference acceleration existed in an accelerometer output. It is one of the main error sources Of the inertial navigation system. The paper analyses systematically and deeply from theoretical point of view the im7uence of lever arm effect error on the accuracy of the navigation system and describes the simulation results on several particular conditions.