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Mathematical Problems in Engineering
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Special Issues
Mathematical Problems in Engineering
/
2010
/
Article
/
Tab 5
/
Research Article
Identification of a Duffing Oscillator under Different Types of Excitation
Table 5
Identification results (noise 5%): percentage error
(
100
·
|
estimated–actual
|
/actual).
i
m
k
c
k
3
60
1.19
3.08
0.53
6.24
90
1.60
2.62
0.15
5.29
120
1.41
1.84
0.73
3.82
180
1.26
1.61
1.59
3.34