Elmomc SimplIQ Software Manual Manual de usuario Pagina 215

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SimplIQ Software Manual 13BFilters
MAN-SIMSW (Ver. 1.4)
14-6
14.2.1 Low-pass (Complex Pole) Element
(Represented by Second-order Block)
The basic continuous-time complex pole element is:
22
2
2
ω
ω
ω
++ sds
where:
f=
π
ω
2
is the angular frequency.
f [Hz] is the pole frequency.
The discrete equivalent form is:
21
2
0
azaz
zb
++
where:
2
2
2
2
1
44
8
2
ω
ω
ω
++
=
T
T
d
T
a
2
2
2
2
2
44
4
4
ω
ω
ω
ω
++
+
=
T
T
d
T
d
T
a
2
2
2
210
44
4
1
ω
ω
ω
++
=++=
T
T
d
aab
14.2.2 Notch Filter Element
(Represented by Second-order Block)
The basic continuous-time notch filter element is:
2
222
2
2
111
2
2
1
2
2
2
2
ωω
ωω
ω
ω
++
++
sds
sds
where:
ω
1
= 2
π
· f
1
, and f
1
[Hz] is the notch frequency.
ω
2
= 2
π
· f
2
, and f
2
[Hz] is the notch frequency.
d
1
is the notch damping.
d
2
is the double-pole damping.
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