摘要
本文针对常规武器低速弹性撞击的特点 ,建立了武器撞击动力学模型 ,采用最小二乘法 ,结合自适应步长算法 ,给出了高度时变参数非线性微分方程的系统辨识方法。并以枪械自动机为实例进行了验证 ,算出了自动机后坐到位撞击模型的弹性系数和粘滞阻尼 ,为进一步的枪械系统仿真提供了有价值的参数。研究结果表明 ,该方法具有较强的灵活性。
A dynamic model for in low-speed impact systems conventional weapons was built up. The system identification method for timely-changed, non-linear differential equations was given, in which the least square method and the algorithm of self-fitted step-time were combined. The method of analysis for the low-speed impact system is divided into two types: rigid impact and elastic impact, of which the elastic impact model is applied. An automation mechanism example for small-arms was put forward and analyzed. The stiffness and damping were calculated for the gun's back impact movement. These parameters were provided for further simulation of small-arms. The results show that the method mentioned has its flexibility, feasibility and practicability.
出处
《兵工学报》
EI
CAS
CSCD
北大核心
2004年第2期242-245,共4页
Acta Armamentarii
关键词
固体力学
武器
撞击
动力学
参数估计
solid mechanics, weapon, impact, dynamics, parameter estimation
