【作者】 安宝林；

【导师】 王昌明；

【作者基本信息】 南京理工大学 ， 测试计量技术及仪器， 2010， 博士

【摘要】 如何评判火炸药的易损性,准确判断其降低的程度是火炸药研究中的一个重要问题,对于火炸药及相关产品在生产、运输、包装、使用等各个环节具有重要作用和意义；由于不同射频的撞击对火炸药的易损性评判是不同的,因此使用高射频撞击进行火炸药的易损性评估也十分有必要；同时研究高射频武器也具有重大的理论和军事价值。论文所作的主要工作如下：根据高频射弹撞击系统的要求,提出了基于PLC时序控制的三枪联动控制方法,设计了一套子弹程控高射频武器系统,包括发射器、摇架、枪架、瞄准系统和消声器等子系统,实现了模拟发射与控制,有效抑制了发射噪音,保证了系统工作的稳定性和可靠性。针对现有制式发射器发射药燃烧不完全以及火药气体后效期作用较大的特点,提出增长发射器身管长度的方法实现对弹丸初速度的提升,通过理论计算和计算机仿真分析,最终确定了身管参数,进行了发射器设计,满足撞击的速度要求；对子弹程控发射技术进行了研究,实现了子弹的稳定发射以及发射时序的顺序控制要求；采用PLC作为现场控制核心,进行硬件电路设计及上、下位机程序的设计,实现了对击发机构的时序控制,保证了射频和速度要求。由于电磁铁的动态响应时间和发射器击发机构的机械传动时间存在的一定的随机性和不一致性,容易造成发射器之间的击发延迟与控制器中设置的延迟时间发生偏差。提出了通过试验的方法,获取误差参数,修正控制器程序中的延迟时间,并验证了该方法的可行性和可靠性。基于平行光生成技术及集成光电接收器件设计了一套大面积光幕测速系统,其有效区截面积达1000×800mm2,能测试射频为200000发/分的高射频武器弹丸初速,为子弹撞击试验提供了试验手段和测试平台。提出了弹丸测速及测频系统校准方法,并进行了系统的不确定分析,阐明了该方法的可操作性。最后通过实弹试验,考核了系统的速度、延迟时间、密集度和枪口噪声等具体性能,试验工作表明,该系统工作可靠,性能满足实际使用的要求。更多还原

【Abstract】 How to evaluate the powder’s vulnerability and make a accurate judge for it’s depression are all very import problems in powder research, they have very import significance for manufacture, transportation, packing and using of powder. Because of the different shooting frequency corresponding to the different vulnerability, so using the high frequency shooting is also has necessity. At the same time it has much military and theoretical value.The achievements are as follows.Based on PLC three guns timing sequence control system is advanced by the demands of high frequency projectile impact system. A high frequency projectile impact system controling by program is designed, include launcher, rotating platform, stack, aiming system and muffler. The simulated shooting and controling are achieved, the shooting noise is also restrained, the stability and reliability are ensured.Point at the propellant is not combust adequately and the aftereffect of powder gas is evident, the bullet velocity enhancing method by increase gunpipe is advanced. The structure parameters are confirmed through computer simulating and theoretics analyse. A new launcher is designed, it’s velocity satisfied all requirements of striking.The program control technology of projectile impact is researched, steadily launch and sequence control of bullet are satisfied. The hardware circuit, software are designed based on PLC, sequence control of shooting machine is achieved, shooting frequency and velocity are accord with requirements.Due to the different and the stochastic between the dynamic responding time and the transmission time of shooting machine, it’s easy to make the error between the delay time of shooting machine and the delay time of controller software. The method of obtaining the delay time of controller software by experiment is advanced and proved.Based on parallel light creating technology and integrating photoelectric incept element, a huge area photoelectric velocity measurement system is developed. The effective photoelectric area is 1000×800mm2, and responding frequency is 200000 once/min. A new measurement equipment for striking examination is obtained. The calibrating method of bullet velocity and frequency measurement is advanced, the error analyse is researched, the maneuverability of this method is also expatiated. Finally the velocity, delay time, distribution, noise are checked by examination, it indicats that the capability of this system is satisfied all requirements.更多还原