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Fom Model Reduced System (sub−system1)
50
Exact1
DualRK1
0
−50
10
−1
10
0
10
1
10
2
10
3
10
4
Frequency (Hz)
Fom Model Reduced System (sub−system2)
50
Exact2
DualRK2
0
−50
10
−1
10
0
10
1
10
2
10
3
10
4
Frequency (Hz)
Fig. 5 Largest singular value of the frequency response of the original switched system of order
(1006) and reduced one of order (10) to a frequency range with DRK-SLS method
Singular Values of the Error System
0
−20
−40
−60
−80
10
−1
10
0
10
1
10
2
10
3
10
4
Frequency (Hz)
Singular Values of the Error System
50
0
−50
−100
10
−1
10
0
10
1
10
2
10
3
10
4
Frequency (Hz)
Fig. 6 Absolute error system between original switched system of order (1006) and the reduced
one of order (10) with DRK-SLS method
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