National Instruments 370757C-01 用户手册
Chapter 4
Controller Synthesis
4-16
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fsesti( )
[SysF, vEV] = fsesti(SysA, ns, QWWA, QVVA, {QWVA})
The
fsesti( )
function computes a frequency-shaped state estimator.
The estimation problem is stated as follows:
The frequency-shaped filter design problem is to minimize,
which can be written as:
or it can be written as:
For more information on the
fsesti( )
syntax, refer to the Xmath Help.
x·
Ax Bu w
+
+
=
y
Cx Du v
+
+
=
J
1
2
2
---
w
*
Q
ww
j
ω
( )w v
*
Q
vv
j
ω
( )v
+
(
)
∞
–
∞
∫
=
d
ω
x·
A
A
e
x
A
=
B
e
u w
A
+
+
J
1
2
2
---
w
A
*
Q
ww
A
w
A
∞
–
∞
∫
=
v
A
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Q
vv
A
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A
2w
A
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Q
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A
v
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+
+
x
A
x·
x·
′
A
11
A
12
A
21
A
22
x
x
′
B
0
u w
A
+
+
=
⎧ ⎪ ⎨ ⎪ ⎩
⎧ ⎨ ⎩
u
C
1
C
2
⎝
⎠
⎛
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x·
′
D
e
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A
+
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⎧ ⎪ ⎨ ⎪ ⎩
A
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B
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C
e