基于区间不确定性参数辨识的某软后坐火炮发射过程建模  

Firing Process Modeling of a Soft Recoil Gun Based on Interval Uncertainty Parameter Identification

作　　者：郭书奇 侯保林[1] GUO Shuqi;HOU Baolin(School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,Jiangsu,China)

机构地区：[1]南京理工大学机械工程学院,江苏南京210094

出　　处：《兵工学报》2023年第4期1107-1117,共11页Acta Armamentarii

基　　金：武器装备预先研究项目(30107070201)。

摘　　要：火炮软后坐发射技术是降低火炮发射后坐力的重要途径。为研究影响软后坐火炮的工作特性,以某软后坐火炮为研究对象,提出一种新型中心流口与变深度筒壁沟槽结合的多流口制退机结构,并通过CFD流体仿真,建立结合流量分配特性的制退机的伯努利方程,提高了制退机的模型精度。以此为基础,又根据区间不确定性理论与遗传算法,以一发实测数据对该软后坐火炮的典型参数进行不确定性参数辨识,建立软后坐火炮发射过程的不确定性参数辨识模型。采用辨识结果的仿真结果与试验数据的相似度可达92.78%。另外,通过第2、第3发试验的对比验证,对应的仿真结果与发射试验结果相似。综合辨识与验证结果来看,结果较好地反映了两种试验工况下的发射过程,表明了建模准确,辨识结果有效,为软后坐火炮系统的设计提供理论指导。The soft recoil firing technology is a significant way to reduce the recoil force of a gun.A new multi-port recoil mechanism with a central port and variable-depth wall grooves is proposed to investigate the firing characteristics of a soft recoil gun.The flow distribution Bernoulli equation is established with CFD simulation to improve the model accuracy.On this basis,the interval uncertainty theory and genetic algorithm are applied to build the parameter identification model of the firing process.The typical parameters of the soft recoil gun are identified and obtained with the test data of the first round.The similarity rate between the simulation and test data can reach up to 92.78%.Moreover,the corresponding simulation results match the test data through the second and the third round.It is proved that the correct modeling and effective identification results provide theoretical guidance for the design of a soft recoil gun.

关 键 词：软后坐火炮 反后坐装置 不确定性 区间可能度 参数辨识 

分 类 号：TJ301[兵器科学与技术—火炮、自动武器与弹药工程]