(A) Sinusoid Vibration
◎ Frequency Range : Hz
◎ Sweep Type : Linear or Logarithmic
○ Acceleration : G
○ Velocity : mm/s or in/s
○ Displacement : mm or inch
※ Slope : dB/Oct
● Duration : hour : min : sec
● Sweep : cycle
◎ Velocity : Oct/min or min/sweep
(B) Random Vibration
◎ Frequency Range : Hz
○ Power Spectrum Density, PSD : G2/Hz
○ Acceleration effective value : Grms
※ Slope : dB/Oct
◎ Dwell : hour : min : sec
( ◎ Must ; ○/● = Need choose 1; ※ choose )
(C) Unit Transform
(C-1) 1 G = 9.8 m /s2
1 m/s2 = 0.102 G
(C-2) PDS Unit Transform
(1) 標準 PDS 單位:G2/Hz
(2) G2/Hz = (9.8 (m/s2 )) 2 / Hz
(3) G2/Hz = 96.04 m2 /s3
(4) G2/Hz = 9.8 G x m/s
G2/Hz = (9.8 (m/s2 )) 2 / Hz = 96.04 ( m2/s4 ) / ( 1/s )
= 96.04 m2 /s3= 96.04 G x m/s
最後數值推導錯了
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