磁强计测高自旋弹丸转速的方法及应用  

Method and Application of Rotational Speed Test of High Spinning Projectile Based on Magnetometer

作　　者：曹咏弘[1] 薛凯允 景永强[1] CAO Yong-hong XUE Kai-yun JING Yong-qiang(School of Science, North University of China, Taiyuan 030051, China)

机构地区：[1]中北大学理学院,山西太原030051

出　　处：《中北大学学报（自然科学版）》2017年第2期110-113,167,共5页Journal of North University of China(Natural Science Edition)

基　　金：电子测试技术国家重点实验室基金资助项目(9140C120401080C12)

摘　　要：基于力学原理研究了磁强计在高自旋弹丸一般运动时的输出公式.在高自旋的特定环境下,基于合理的假定,化简了磁强计的输出信号,研究了基于此信号的半周期确定方法及弹丸转速测试方法,并进行了实弹测试,利用小波分析方法处理了测试数据.依据上述转速测试方法得到的转速曲线和利用陀螺得到的转速曲线是一致的,说明了本文方法的有效性.Based on the principles of mechanics, the output signal formula of magnetometer was studied in this paper in the case of general movement of the projectile. Then in the case of high-spinning envi- ronment, based on reasonable assumptions, the output signal formula of the magnetometer was simpli- fied. And based on the simplified formula, the determination of the half-cycle was studied, and the test method of rotational speed of projectile was studied. The rotational speed curve obtained by the method in this paper is almost same as that obtained by the gyros in the same live-fire test, the result indicates the effectiveness of the method.

关 键 词：磁强计 高自旋弹丸 转速 半周期 小波分析 

分 类 号：TP212.130[自动化与计算机技术—检测技术与自动化装置] TJ410.6[自动化与计算机技术—控制科学与工程]