摘要
针对一体化六光幕阵列测量模型,提取模型中光幕结构参数,在MATLAB中建立模型进行仿真,逐一分析各结构参数影响下的对弹丸飞行速度和坐标测量误差的影响规律,给出结构参数优化方法。基于优化的结构参数典型值得到了1 m×1 m矩形靶面范围内弹丸飞行速度和坐标的测量误差分布。实弹试验表明弹丸飞行参数测量与仿真分析具有一致性,横坐标测量误差不超过3.1 mm,纵坐标测量误差不超过4.8 mm,速度测量误差小于1.1 m/s。该结果可为光幕阵列测量设备的工程设计提供理论依据,也可为提高身管武器弹丸飞行参数测量精度提供参考。
Due to the advantages of fast response,multiple factors metering and easy implementation,the measurement method of light-screen array has been widely used in the measurement of external ballistic flight parameters of barrel rapid-fire weapons.Compared with the separated light-screen array,the integrated light-screen array measurement model has the advantages of simplified parameters,simple model and easy to use.Aiming at the integrated light-screen array measurement model,the structure-related design parameters of the integrated light-screen array measurement model are extracted and the error propagation formula is derived to analyze the influence of different parameters on the measurement error of the projectile flight parameters.Then the simulation model is established in MATLAB according to the analysis result,and the influence law of the vertical angleα,the horizontal angleβ,the target distance s and the height difference h on the flight velocity and coordinate measurement errors of the projectile is analyzed.The simulation results show that the vertical angleαmainly affect the projectile ordinate measuring error.and with the increase ofα,the ordinate measuring error decreases and the decreasing trend gradually weakens.The horizontal angleβmainly affect the projectile abscissa measuring error,and with the increase ofβ,the abscissa measuring error decreases and the decreasing trend gradually weakens.The ordinate measuring error,abscissa measuring error and velocity measuring error of the projectile are all affected by the target distance s.The measurement errors gradually decrease with the increase of s and the decreasing trend is gradually weakened.Then the optimization method of structural parameters is given.By increasing angle of light screen structure,the effective target surface detection area will be reduced,and the value range of the optimized vertical angleαand horizontal angleβis from 20°to 30°.Since large target distance is not conducive to transportation,field layout and use,it is more appropriate to choose an optimized target distance s range of 1.5~2.5 m and the height difference is 0 m.According to the error distribution law of projectile flight parameters under the influence of various parameters,typical values are assigned to each parameter in the optimized integrated light-screen array measurement model that the distance between front target and back target s=2 m,height difference h=0 m.The accurate angles of the light-screen are obtained by the calibration experiment using the method of plane fitting that vertical angleα=24.94°and horizontal angleβ=24.61°.Then the measurement error distribution of projectile velocity and coordinates in the range of 1 m×1 m rectangular target surface are obtained.The results showed that the measurement error of the projectile is no more than 1.50 mm in horizontal coordinate and no more than 2.10 mm in vertical coordinate.The velocity measurement error is not large,which is 728.70 mm/s.Finally,the live verification test is carried out.Due to the influence of external field environmental factors,the measurement error obtained by the test is slightly larger than the simulation result.The live test results show that the measurement of projectile flight parameters is consistent with the simulation analysis.The maximum error of abscissa measurement is not more than 3.1 mm,the maximum error of ordinate measurement is not more than 4.8 mm,and the maximum error of velocity measurement is not more than 1.1 m/s.The results of the method presented in this paper can provide theoretical basis for the measurement error analysis and theoretical support for the engineering design of light-screen array measurement equipment,and also provide a reference for improving the flight parameter measurement accuracy of barrel weapon projectile.
作者
于国栋
王春阳
冯江海
张月
刘晓辰
李忠琦
程志远
YU Guodong;WANG Chunyang;FENG Jianghai;ZHANG Yue;LIU Xiaochen;LI Zhongqi;CHENG Zhiyuan(163869 Chinese People′s Liberation Army troops,Baicheng 137001,China;Xi′an Institute of Optics and Precision Mechanics of Chinese Academy of Sciences,Xi′an 710119,China)
出处
《光子学报》
EI
CAS
CSCD
北大核心
2023年第6期283-293,共11页
Acta Photonica Sinica
基金
国家自然科学基金(No.61875257)。
关键词
光幕阵列
测试精度
仿真分析
参数优化
Light-screen array
Measuring accuracy
Simulation
Parameter optimization
