Simex MultiCon CMC-99/141, Руководство пользователя

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User Manual For - CONTROLLER/DATA RECORDER MultiCon CMC-99/141
Filter type
The Filter type parameter has the following options:
– disabled - filtering of the input value is turned off,
– smoothing - this option enables the filter that is expressed by the formula:
,where
n
- number of sample, where n = 1, 2, 3 ...,
Y
n
- output value for n-th sample,
Y
n-1
- output value for n-1 sample,
X
n
- input value for n-th sample,
w - time constant in seconds, this filter coefficient is defined by the user from the
Decay constant
parameter (a value of
'0'
for the filter is turned off),
0.1 sec.
- sample time,
After selecting the Smoothing option in the Filter type parameter a new button is
available - Filter configuration which allows the user to enter a time constant with the Decay
constant parameter (see the above filter formula).
Fig. 7.42. Example of the input signal (red chart), filtered signal for the time constant = 5s
(green chart) and the time constant = 15s (blue chart)
82
Y
n
=
X
n
⋅
1
−
e
−
0,1 sek.
w 
Y
n − 1
⋅
e
−
0,1 sek.
w
0 10 20 30 40 50 60 70 80 90 100
10
15
time [s]
o
u
tp
u
t v
a
lu
e