高转速弹丸地磁测姿系统仿真设计
毕业设计说明书（论文）外文摘要
Title The attitude determination of high spin rate projectile on geomagnetism and its system simulation
Abstract
Obtaining the flight attitude angle of guided munitions is directly related the its hit accuracy. The geomagnetic attitude measurement technology based on magnetic detection of high spin rate projectile attitude solution derived, and attitude measurement simulation, error compensation, and other aspects are studied. First the background and significance of the research are introduced, followed by a certain statement of the history and progress of research on this subject at home and abroad, followed by analysis of the principle of the formation of the geomagnetic field and the geomagnetic field to describe the computational model. On the basis of explaining for the definition of coordinate system and the attitude angle, select a draw from the launch of the coordinate system to the body coordinate system transformation order to establish the mathematical model of the attitude angle solver, and based around the magnetic expression component of the attitude angle. Choose some place as the launching point during the simulation and select the geomagnetic field strength on the longitude and latitude of this place as the whole trajectory. According to the derived geomagnetic attitude measurement model to simulate and verify the correctness of the geomagnetic attitude measurement method.
Keywords Spin rate Geomagnetism detection Attitude angle Trajectory Simulation Magneto resistive sensor
目录
摘要 I
Abstract II
1 绪论 1
1.1 课题背景 1
1.2 制导弹药姿态测量技术现状 2
1.3论文主要工作 5
2 地磁测姿技术概述 7
2.1 地磁基本理论 7
2.2 常见地磁传感器性能及特性 10
2.2.1霍尔磁传感器 10
2.2.2磁通门磁强计 11
2.2.3磁阻传感器 12
2.2.4巨磁电阻传感器 13
2.2.5巨磁阻抗传感器 14
2.3 弹道范围内地磁变化情况 14
3 基于磁阻传感器的姿态测量方法 17
3.1 坐标系 17
3.2 测量方程 18
3.3 姿态解算方法 19
3.3.1当已知偏航角 时 20
3.3.2当已知俯仰角 时 20
3.3.3当已知滚转角 时 20
3.4 解的存在性分析 21
3.4.1已知偏航角时求俯仰角 21
3.4.2 已知偏航角时求滚转角 21
3.4.3 已知俯仰角时求偏航角 22
3.4.4 已知滚转角时求偏航角 23