弹体飞行姿态角速度磁测解算方法  

A Method for Magnetic Survey of Angular Velocity of Projectile Flight Attitude

作　　者：陈春行 林春生[1] 马剑飞[1] 翟国君[2,3] CHEN Chunhang;LIN Chunsheng;MA Jianfei;ZHAI Guojun(Department of Weapons Engineering,Naval University of Engineering,Wuhan 430033,China;Department of Navigation Engineering,Naval University of Engineering,Wuhan 430033,China;Naval Institute of Hydrographic Surveying and Charting,Tianjin 300061,China)

机构地区：[1]海军工程大学兵器工程系,武汉430033 [2]海军工程大学导航工程系,武汉430033 [3]海军海洋测绘研究所,天津300061

出　　处：《弹箭与制导学报》2018年第1期158-160,F0003,共4页Journal of Projectiles,Rockets,Missiles and Guidance

基　　金：国家自然科学基金项目(41347018,41476087)资助

摘　　要：针对陀螺仪的量程有限,很难满足自旋弹滚转角速度测量要求的问题,提出了一种利用三轴地磁传感器测量弹体姿态角速度的方法。该方法首先通过地磁传感器获得弹体坐标系下的磁场强度及其变化率,然后将地磁传感器横竖两轴所测的磁场强度作相关运算求得弹体滚转角速度,最后结合弹体质心方程解算出俯仰角速度及偏航角速度。仿真结果表明:该方法可以实现旋转弹体的姿态角速度的测量,有效的抑制了误差,且满足精度要求。Aiming at the problem that the limited range of gyroscope and it was difficult to meet the requirements of spin projectile rolling angle velocity measurement,a method which using three axis geomagnetic sensor to measure the projectile attitude angular velocity was proposed.At first,the magnetic field strength and its rate of change in the projectile coordinate system were obtained by geomagnetic sensors.Then the correlation calculation of magnetic field intensity measured by the horizontal and perpendicular axes of geomagnetic sensor was carried out to obtain the roll angular velocity of projectile.Finally,combining the barycenter equations to calculate the rate of pitch and yaw angular rate.The simulation results show that this method can realize the measurement of angular velocity of the attitude of a rotating projectile,effectively restrain the error and meet the precision requirement.

关 键 词：姿态角速率 仿真 地磁传感器 

分 类 号：TJ410[兵器科学与技术—火炮、自动武器与弹药工程] TP212[自动化与计算机技术—检测技术与自动化装置]