European Journal of Scientific Research - EuroJournals

802 S. Gherbi, S. Yahmedi and M. Sedraoui
Singular values
Singular values
10 1
10 0
10 -1
10 -2
10 -3
10 -4
10 -5
10 1
10 0
10 -1
10 -2
10 -3
10 -4
10 -5
10 -4
10 -4
10 -6
10 -3
10 -3
Figure 7: Stability robustness condition
10 -2
10 -1
σ
[ T ( jw)
]
10 0
Pulsations rad/sec
10 1
Figure 8: Performances robustness condition
10 -2
10 -1
σ
[ ] 1 −
( jw)
W p
10 0
Pulsations rad/sec
10 1
10 2
σ
10 2
σ
[ ] 1 −
( jw)
W t
[ S(
jw)
]
10 3
10 3
10 4
10 4