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摘要为了精确控制炸点和提高毁伤目标的概率和效果，需要进一步提高电子时间引信的作用精度。通常采取实时测量初速的措施，以打出弹丸的实际初速来修正装定的作用时间，提高时间引信的作用精度。
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本论文系统叙述了影响弹丸炸点的多种因素和带来的射距以及时间误差，得出了弹丸炮口初速度是主要影响因素之一的结论，并进行了仿真验证。该仿真系统依赖于已建立的弹丸外弹道仿真系统，利用外弹道仿真输出的高速弹丸的动态参数，从而获取弹丸在飞行过程中的数据，得到影响引信炸点精度的主要因素之一--初速度带来影响的变化规律。围绕弹丸的初速度测量，这里提出了一种计转数弹载测速及时间修正原理。20296
关键词 电子时间引信 炸点精度 自修正 计转数
毕业论文设计说明书（论文）外文摘要
Title Self-test muzzle velocity correction electronic time fuze correction algorithm
Abstract
In order to accurately control the bombing target point and raise the probability and effects, we need further action to improve the accuracy of electronic time fuze. We usually take action to measure muzzle velocity in real time, so that we can hit actual muzzle velocity of projectile to correct the installation time of setting, and enhance the action precision of time fuze.This paper systematically describes a variety of factors that affect the projectile target point, as well as launch range and time error caused by these factors; then the paper concludes that the projectile muzzle velocity is one of the main factors and verifies the conclusion by simulation.The simulation system depends on established projectile's external trajectory simulation system, and utilizes dynamic parameters of high-speed projectile in external trajectory simulation output, thereby obtaining the data of projectile in the flight process, and gaining the main factor affecting precision of fuze target pointthe— the change regulation between time variation and muzzle velocity of projectile.
Focusing on the muzzle velocity measurement of projectile, we propose a projectile-borne velocity measurement calculating the revlutions and time correction principle.
Keywords Electronic time fuze Fried point accuracy Self-correction Count the number of revolutions
目录
1 引言 1
1.1课题的背景及意义 1
1.2时间引信的作用原理及发展 1
1.3典型的时间引信举例 2
1.4电子时间引信的工作原理 3
1.5本论文的主要工作 3
2 影响引信炸点精度的误差来源 4
2.1武器系统相关参数对引信的影响 4
2.2由电子时间引信内部系统造成的误差 4
2.2.1时基振荡器振荡周期误差 4
2.2.2装定时间误差 5
2.2.3定时器启动误差 6
2.3由外部环境因素造成的误差 7
2.3.1海拔（非标准气温、气压）不同造成的偏差 7
2.3.2风对弹道参数的影响 7
2.4由初速度造成的误差 8
2.5由弹重造成的误差 8
2.6 本章小结 8
3 几种弹丸引信的自测速方法 8
3.1概述 8
3.2介绍几种常用引信自测速方法 9
3.2.1电磁感应原理方法自测速 9
3.2.2弹体（或引信）上放置加速度传感器自测速 9
3.2.3应用其他的方法测速 10
3.3计转数法测速 11
3.3.1弹载计转数测速法原理 11