摘要
针对发射精度问题,利用频谱分析技术研究了舰载导弹发射弹位的影响。基于修正的Craig-Bampton法和虚拟样机技术,建立了船舶运动和导弹发射刚柔耦合一体化模型。利用发射时间参数化脚本语言,实现了自动仿真,获取了大量工况下不同弹位的导弹出筒姿态,确定了恶劣发射弹位。基于快速傅里叶变换法(FFT)对导弹动力学响应进行了频谱分析,明确了发射弹位和发射精度的关系。依据研究结果,能够根据船舶的具体运动形式,设计武器系统放置的位置,同时也对发射时选择合适弹位具有指导意义。
Abstract
In allusion to the problem of launching precision, the effect on shipborne missile launch position was researched based on modified Craig-Bampton method and the spectrum analysis technology. In this paper, a rigid-flexible coupling integrative model of ship movement and missile launch was built by using the virtual prototype technology. Meanwhile, to get the missile muzzle attitude parameters of different launch position, launch time parameterized scripting language was used. Finally, the spectrum analysis based on FFT was used to analyze the missile dynamic responsive, also the relationship between launch position and accuracy was established. Through the study, the position of the weapon system can be designed according to the specific motion characteristics of ship. Furthermore, the research result is also constructive to the selecting of suitable launch position.
关键词
快速傅里叶变换 /
舰载导弹 /
修正的Craig-Bampton法 /
弹位 /
发射精度
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Key words
fast Fourier transform /
shipborne missile /
modified Craig-Bampton method /
missile position /
launching precision
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钟洲;姜毅.
基于FFT算法的舰载导弹发射弹位影响研究[J]. 振动与冲击, 2014, 33(13): 210-214
ZHONG Zhou;JIANG Yi.
Study on the effect of shipborne missile launch position based on fast Fourier transform[J]. Journal of Vibration and Shock, 2014, 33(13): 210-214
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