Geology Reference
In-Depth Information
Figure 6. Assessment model for compositive optimal control
J
= =
1
J
D
1
(9)
towers are different during the optimization, the
one with larger responses is selected for calcula-
tion. The lower and upper bounds of the design
parameters are set as follows:
J
= =
J
M D
⋅
1
(10)
2
1
10000 kN·s/m≤
C
1
≤20000 kN·s/m
1 2
/
J
=
J
=
M D M D
⋅
⋅
⋅
(11)
3
1
1
2
2
10000 kN·s/m≤
C
2
≤20000 kN·s/m
1 2
/
J
J
M D F D
=
=
⋅
⋅
⋅
(12)
C
1
+
C
2
=30000 kN·s/m
4
1
1
3
3
D
≤
.
0 3
m
J
1
is the most simplest and convenient and
merely one dominating factor
D
1
is considered
whereas it may be inadequate to deal with a
complex structure as the RSB. Another relative
important factor
M
1
is therefore added into
J
2
.
Furthermore, two more factors of M
2
and
D
2
are
considered in
J
3
, and F
3
and
D
3
in
J
4
.
It is notable that
J
3
and would be suitable when
the calculation is near the optimization and the
opposite is suitable for
J
4
. When responses of two
1
where
C
1
and
C
2
represent damper coefficients at
the south and north towers respectively.
C
1
and
C
2
are set to an integer multiplied by 1000 to decrease
iterations. The range of
C
1
and
C
2
is set from 10000
kN·s/m to 20000 kN·s/m for that initial analysis
shows that the control effect is not perfect when
the
C
1
is greatly different from
C
2
. Consider the
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