摘要
针对侵彻引信电路在受到过靶大过载冲击时的电路振动噪声问题,建立了侵彻冲击振动激励与电路振动噪声响应之间的数学模型;提出了一种基于小波分析的噪声消除方法。该方法通过对侵彻引信冲击激励信号进行小波分析,对输出电路振动噪声响应信号进行高斯函数拟合,建立了冲击振动激励信号与输出振动噪声响应信号之间的关联函数,在此基础上设计了针对于侵彻引信冲击振动激励的输出电路噪声信号处理算法。仿真结果表明,该算法对冲击振动引起的侵彻引信电路噪声有明显消噪效果。
In order to solve the problem that the penetration fuse circuit subjected to a large overload shock will produce circuit vibration noise,the mathematic model between the penetrating impact vibration excitation and the circuit vibration noise response has been established in the paper. And a noise elimination method based on wavelet analysis has been proposed. The method in the paper uses the wavelet transform to analyze the impact exciting signal of the penetration fuse and uses the Gaussian function to fit the output vibration noise response signal of circuit.Then the correlation function between these two signals can be established. The output noise processing algorithm of circuit is designed for vibration excitation based on this. The simulation results show that the algorithm has obvious de-noising effect on the noise of the penetration fuse circuit caused by impact vibration.
作者
崔思林
郗向儒
汪晓安
Cui Silin1, Xi Xiangru1 , Wang Xiaoan2(1. School of Mechanical and Precision Instrument Engineering, Xi＇an University of Technology, Xi＇an 710048, China 2. Northwest Industrial Group Co., Ltd., Xi＇an 710043, Chin)
出处
《机械科学与技术》
CSCD
北大核心
2018年第5期742-746,共5页
Mechanical Science and Technology for Aerospace Engineering
关键词
侵彻引信
冲击振动
小波分析
信号处理
penetration fuse
impact vibration
wavelet analysis
signal processing
