docNON-STATIONAR STOCHASTIC VIBRATION SI(NAL MOD3LIN
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NON-STATIONAR STOCHASTIC VIBRATION SI(NAL MOD3LIN
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Spectrum (db)
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100
60
20
5
4
3
2
Frequency (Hz)
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20
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s
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Angular
Displacement (rad)
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Time (sec)
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1−step ahead predictions
0.04
0.02
0
−0.02
−0.04
231.5
232
232.5
233
Time (sec)
233.5
234
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Spectrum (db)
200
160
120
20
80
5
4
3
2
Frequency (Hz)
1
10 ec)
(s
e
0 0 im
T
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J4R$JLFF[?ZIJ4CEQKMN.eLR$J4SYJ4R$J4S.T?KMNOK uCIK(CEN.UQqGQ\$QR$GQRGC(KM\$Q4FCEZE[?Uj/JLKQS.SJLKN.CIK
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cS.CEH?DL[?eLH%R?DLC\?ZEQ4KMQRGCES.TN.S.S.[$KMCEZIJ4CEQ4bjwR?DLRqs\$J4ZIJ4UQCEZENOFUQCEH?DG?KH$Jg2QKMQZEN.DL[$K
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[$KMQ4b> QT2DLR$N.CIKYH?Q4JgGTD4g2QZ§qs\$J4ZIJ4UQCEZEN.µ4J4CEN.DLRjGCEH?NOKYUDGGQSNOK¨IJY«GYJ4ZI?© ^DLZ
Frequency (Hz)
Frequency (Hz)
0.92
0.9
0.88
0.86
0.84
0
5
Time (sec)
10
3.8
3.7
3.6
3.5
0
5
Time (sec)
10
5
Time (sec)
10
0.08
Damping
Damping
0.04
3.9
0.02
0
0.06
0.04
0
5
Time (sec)
10
0
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