冲击信号下的响应谱分析

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摘  要:文章介绍改进的递归数字滤波方法进行冲击响应谱的计算原理和分析方法。通过MATLAB数据处理平台编制一套通用的冲击响应谱曲线计算程序,可以快速分析得到冲击响应谱的曲线。通过对飞机起飞时刻冲击信号的冲击响应谱分析,为飞机机体结构安全及内部设备的环境振动设计提供重要依据。

关键词:冲击;递归数字滤波方法;冲击响应谱

中图分类号:TP3      文献标志码:A          文章编号:2095-2945(2022)11-0143-04

Abstract: The calculation principle and analysis method of impulse response spectrum by improved recursive digital filtering method are introduced. A set of general calculation program of shock response spectrum curve is compiled by MATLAB data processing platform, which can quickly analyze and obtain the curve of shock response spectrum. Through the analysis of the shock response spectrum of the impact signal during the take-off of the aircraft, it provides an important basis for the structural safety of the aircraft body and the environmental vibration design of the internal equipment.

Keywords: shock; recursive digital filtering method; impulse response spectrum

现实生活中存在很多的振动冲击现象,在极短的时间内承受很大的载荷,所释放出来的能量极具有破坏力,这种现象可以看作是振动环境的一种特列[1],例如舰载机在航空母舰上进行弹射起飞或者拦阻着陆瞬间会产生严酷的冲击载荷,可以瞬间引起飞机上机载成品设备和机体结构的强迫振动及固有频率的响应,使飞机机体或者机载成品设备出现不同程度的损害,从而引起飞机试飞事故。(剩余3162字)

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