火力与指挥控制2016，Vol.41Issue(12)：138-141,4.
多击痕轮廓最小外接圆法测量击针偏心度
Eccentricity Measurement of Firing Pin Based on Minimum Circumscribed Circle of Multiple Firing-indentations
摘要
Abstract
Aimed at the problem that more than two firing-indentations will have overlapping against a single firing-indentation contour circle fitting,a method to achieve eccentricity detection of the gun firing pin by measuring the minimum circumscribed circle of multiple firing-indentations overall outline was presented. Firstly,the cartridge primer hole filling ductile metal was fired only one times,to obtain the image of the single firing-indentation,and fit out the circle radius of the firing-indentation contour. Then,the ductile metal was fired again,total no less than three times,and the cartridge rotation angle is much the same between any two firing. Finally,the image of multiple firing-indentations on primer was processed to get the whole contour,and the minimum circumscribed circle radius of the outline was calculated. The difference of fitting circle radius between the multiple firing-indentations and the single firing-indentations was used as the firing pin eccentricity. The simulation results come from Monte Carlo method show that the new method is not affected by the influence of angle error of rotation of the cartridge and the firing pin eccentricity size,the mean square deviation of measure result stability. The results show that the new method is feasible and available.关键词
击针偏心度/多击痕法/最小外接圆/蒙特卡洛方法Key words
firing pin eccentricity/multiple firing-indentations method/minimum circumscribed circle/Monte-Carlo method分类
军事科技引用本文复制引用
霍李,王媛,赵黎兴..多击痕轮廓最小外接圆法测量击针偏心度[J].火力与指挥控制,2016,41(12):138-141,4.基金项目
国家军用标准修订项目(14ZS021) （14ZS021）
军队试验技术研究基金资助项目(12- sy14) （12- sy14）
