针对高速旋转弹丸的转速测试问题,分析了转速测量装置硬件设计和转速数据的处理方法。根据电磁感应原理。利用傅里叶变换技术将时域电压信号转换为频域信号,对含有噪声的电压信号进行频谱分析,提取幅值最大的频率分量所对应的频率值即可认为是弹丸的实际转速,其它频谱分量认为是噪声分量。在某靶场进行实际弹道实验,利用所提方法对实际实验数据进行处理,得到了全弹道的转速-时间数据。实验及数据处理结果表明:所提方法可行,对实际工程应用具有较大的指导意义。
Abstract
To analyze the rotate speed of spinning projectile,the hardware design of a rotate-speed measuring mechanism and its data processing method were studied.According to the principle of electromagnetic induction,the time-domain voltage signal was changed into frequency domain by using the technology of FFT,and then the frequency spectrum of the voltage signal with noise was analyzed.The frequency corresponding to the biggest spectrum component was extracted,which was regarded as the actual rotate-speed of projectile,and other spectrum component was regarded as noise component.The actual ballistic experiment was carried out,and the experimental data was processed by the proposed method,and the data of ratate speed varying with time was obtained.The result shows that the proposed method is effective,and it offers reference for practical application.
关键词
旋转弹丸 /
转速测量 /
电磁感应 /
傅里叶变换
{{custom_keyword}} /
Key words
spinning projectile /
rotate-speed measuring /
electromagnetic induction /
FFT
{{custom_keyword}} /
基金
国家自然科学基金项目(11472136; 11402117)
{{custom_fund}}
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
参考文献
[1] 尚剑宇,张晓明.常规弹药转速测量方法仿真研究[J].弹箭与制导学报,2012,32(4):99-102.
SHANG Jian-yu,ZHANG Xiao-ming.Simulation on rotating speed measurement method of conventional ammunition[J].Journal of Projectiles,Rockets,Missiles and Guidance,2012,32(4):99-102.(in Chinese)
[2]岳晗,裴东兴.弹丸转速-炮口速度无线弹载测试系统设计[J].火炮发射与控制学报,2014,35(1):71-74.
YUE Han,PEI Dong-xing.Wireless missile-borne test system design based on projectile rotating speed-muzzle velocity[J].Journal of Gun Lunched and Control,2014,35(1):71-74.(in Chinese)
[3]孙发鱼,张洪.弹丸转速测量系统[J].测试技术学报,1996,10(2):35-37.
SUN Fa-yu,ZHANG Hong.Measurement system of projectile[J].Journal of Test and Measurement Technology,1996,10(2):35-37.(in Chinese)
[4]张万君,吴晓颖.基于连续波雷达微多普勒效应的弹丸转速测试方法[J].装甲兵工程学院学报,2012,26(5):45-50.
ZHANG Wan-jun,WU Xiao-ying.Testing method of projectile rotating speed based on micro-Doppler effect of CW radars[J].Journal of Academy of Armored Force Engineering,2012,26(5):45-50.(in Chinese)
[5]朱晓勤,陈超.先整形后捕捉的磁阻式弹丸转速测量方法[J].探测与控制学报,2013,35(4):49-52.
ZHU Xiao-qin,CHEN Chao.Rotating speed measurement based on magnetoresistance sensor[J].Journal of Detection and Control,2013,35(4):49-52.(in Chinese)
[6]黄涛.弹丸转速的传感器测量方法[J].弹箭与制导学报,2002,22(4):69-70.
HUANG Tao.Method of measuring the projectile rotating speed with sensors[J].Journal of Projectiles,Rockets,Missiles and Guidance,2002,22(4):69-70.(in Chinese)
[7]张慧,曹咏弘.基于线圈式地磁传感器的高速旋转弹转速测试[J].战术导弹技术,2009,6(4):64-67.
ZHANG Hui,CAO Yong-hong.Rotational speed test of high spinning projectile based on magnetic coil sensor[J].Tactical Missile Technology,2009,6(4):64-67.(in Chinese)
{{custom_fnGroup.title_cn}}
脚注
{{custom_fn.content}}
