弹丸姿态解算方法研究  

Research on Method of Attitude Algorithm for Pill Using Matlab

作　　者：高路鹏[1] 狄长安[1] 孔德仁[1] 王桑[1] 

机构地区：[1]南京理工大学机械工程学院,江苏南京210094

出　　处：《计算机仿真》2013年第5期15-18,共4页Computer Simulation

摘　　要：研究弹丸轨道优化问题,为提高有效命中率,对解算方法都需要确定有效的初值,以往设定初值时存在一定的盲目性,往往解算出来的值与方程组的最优解存在较大误差,需要多次校对才能得到较准确的解,无疑加大了工作量。针对上述问题,采用方向余弦法,利用三轴磁阻传感器测量地磁场在弹体坐标系三轴上的分量,通过Matlab仿真分析了初值设定对解算结果的影响,提出了一种通过逐步缩小初值范围提高解算精度的方法,使姿态解算误差可控制在0.3°以内,计算量也有了较大的减少。Most calculation methods are needed to determine an initial value. But there is certain blindness in the initialization, and often exists a lager error between the calculation of the value and the equations of the optimal solu- tion. It needs many times to obtain more accurate solution, which undoubtedly increases the workload. In view of these problems, the three-axis coordinate components of geomagnetic field in the body coordinate system were meas- ured using the direction cosine algorithm and three-axis magnetoresistive sensor. The influence of initial value setting on the algorithm results was analyzed with Matlah simulation and a method was put forward to improve the algorithm precision by gradually narrowing the scope of initial values. The attitude algorithm error of the method can be con- trolled within 0.3°, meanwhile, the computational complexity has been greatly reduced.

关 键 词：姿态解算 磁阻传感器 初值设定 误差 

分 类 号：TJ01[兵器科学与技术—兵器发射理论与技术]