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FOM Model
60
40
20
0
Exact1
IDRK−SLS
ISVDDRK−SLS
−20
−40
10 −1
10 0
10 1
10 2
10 3
10 4
Frequency (Hz)
FOM Model
20
0
Exact2
IDRK−SLS
ISVDDRK−SLS
−20
−40
10 −1
10 0
10 1
10 2
10 3
10 4
Frequency (Hz)
Fig. 23 Largest singular value of the frequency response of the original switched system of order
(1006) and reduces systems of order (10) to a frequency range with IDRK-SLS and ISVDDRK-
SLS methods
Singular Values of the Error System
0
−20
−40
−60
IDRK−SLS
ISVDDRK−SLS
−80
10 −1
10 0
10 1
10 2
10 3
10 4
Frequency (Hz)
Singular Values of the Error System
0
−50
−100
IDRK−SLS
ISVDDRK−SLS
−150
10 −1
10 0
10 1
10 2
10 3
10 4
Frequency (Hz)
Fig. 24 Absolute error system between original switched system (FOM of order 1006) and the
reduces systems of order (10) with IDRK-SLS and ISVDDRK-SLS methods
using the ISVDDRK-SLS method, which is not the case for the high frequency
using the IDRK-SLS method, hence the performance of the ISVDDRK-SLS
method (Fig. 25 ).
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