摘要
This paper presents a new idea for an a lyzing the complicated shock signal.Based on this kind of analysis,an equivale nt power spectral density(PSD) chart is drawn for vibration environmental test,which is carried to test the vehicle loading instrument's vibration behavior.T he environment test is equivalent to the condition under which the vehicle and t he instrument is experiencing a firing period.Exactly speaking,the short time vibration during the firing period is a complicated shock event.The paper point s out the deficiency of the commonly used half sine equivalence for the shock an d vibration environment test and gives the procedure of how to draw the PSD char t through the actual acceleration data.
This paper presents a new idea for analyzing the complicated shock signal. Based on this kind of analysis, an equiv- alent power spectral density（PSD） chart is drawn for vibration environmental test, which is carried to test the vehicle load- ing instrument＇ s vibration behavior. The environment test is equivalent to the condition under which the vehicle and the instrument is experiencing a firing period. Exactly speaking, the short time vibration during the firing period is a complicated shock event. The paper points out the deficiency of the commonly used half sine equivalence for the shock and vibration en- vironment test and gives the procedure of how to draw the PSD chart through the actual acceleration data.
关键词
PSD
通信
信号处理
数字信号
信号分析
environment test
waveform equivalence
complicated shock
power spectral density（PSD）
