面向弹丸炮口状态的自行火炮结构参数全局灵敏度

doi:10.3969/j.issn.1000-1093.2021.02.004

摘要/Abstract

摘要： 合理评估自行火炮结构参数在给定分布条件下对弹丸炮口状态的影响，不仅有利于提高自行火炮的射击精度，而且还可以改进自行火炮的生产工艺水平。为获得较准确的弹丸炮口状态，建立了能够同时考虑弹丸膛内运动和车体振动的某自行火炮整体发射动力学模型。针对某些自行火炮参数存在相关性等情况，提出了一种基于Rosenblatt转换理论的全局灵敏度分析方法。该方法在输入变量为任意连续独立实变量条件下，通过对独立变量组1阶敏感系数和全敏感系数的估计，实现了相关变量组1阶敏感系数和全敏感系数的估计。基于上述模型和方法，进行了某自行火炮最大射程条件下，面向弹丸炮口状态的火炮结构参数全局灵敏度分析。结果显示：底盘纵向转动惯量是最大射程条件下影响火炮弹丸炮口状态的最大因素。

关键词: 自行火炮, 弹丸炮口状态, 全局灵敏度分析, 结构参数

Abstract: The influences of the structural parameters of self-propelled gun on the position and attitude of projectile at muzzle should be reasonably assessed to improve the firing accuracy of self-propelled gun. An integral launch dynamics model of a self-propelled gun is established to solve the problem above. Then an approach of global sensitivity analysis is presented, which is based on the Rosenblatt transformation. In the approach, the first-order and total sensitivity coefficients of an independent variable are estimated with the help of a random continuous independent variable, and the first-order and total sensitivity coefficients of independent variables are estimated with the help of a set of random continuous independent variables. The global sensitivity analysis of a self-propelled gun's structural parameters for position and attitude of projectile at muzzle is conducted lastly based on the proposed model and the suggested approach. The results show that the longitudinal moment of inertia of chassis in the vertical plane is a main factor influencing the position and attitude of projectile at muzzle at the maximum range.

Key words: self-propelledgun, positionandattitudeofprojectileatmuzzle, globalsensitivityanalysis, structuralparameter

中图分类号:

TJ302

罗中峰，管小荣，徐诚. 面向弹丸炮口状态的自行火炮结构参数全局灵敏度[J]. 兵工学报, 2021, 42(2): 254-267.

LUO Zhongfeng, GUAN Xiaorong, XU Cheng. Global Sensitivity Analysis of a Self-propelled Gun's Structural Parameters for Position and Attitude of Projectile at Muzzle[J]. Acta Armamentarii, 2021, 42(2): 254-267.

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