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Paramètre
Entrée
& Type de donnée
Dest
Variable to store strain in.
Reps
Number of strains to calculate, Destination, source, and zero variables must be
dimensioned accordingly.
BrConfig
Bridge configuration code for strain gages The bridge configuration code can be
entered as a positive or negative number:
+ code:
with increasing strain.
- code:
with strain. This is the configuration for a quarter bridge using CSI's 4WFB350
Terminal Input Module (i.e., enter the bridge configuration code as -1 for 1/4
bridge with TIM.)
Cod
e
1
2
3
4
5
6
Source
The source variable array for the measurement(s), the input is expected as
millivolts out per volt in (the result of the full bridge instruction with a multiplier
of 1 and an offset of 0.
BrZero
The variable array that holds the unstrained reading(s) in millivolts out per volt in.
GF
Gage Factor. The gage factor can be entered as a constant used for all repetitions
or a variable array can be loaded with individual gage factors which are
automatically used with each rep. To use an array enter the parameter as
arrayname(), with no element number in the parentheses.
Poisson ratio, enter 0 if it does not apply to configuration.
v
Chapitre 8. Instructions mathématiques de calculs
=
−
V
0 001
.
(Source
Zero
r
= −
−
V
0 001
.
(Source
r
Configuration
Quarter bridge strain gauge µε =
Half bridge strain gauge, one gage parallel to strain, the other at 90 ° to strain:
µε
=
Half bridge strain gauge, one gage parallel to
Full bridge strain gage, 2 gages parallel to
Full bridge strain gage, half the bridge has 2 gages parallel to
−νε
+νε
the other half
and
Full bridge strain gage, one half
µε
)
; bridge configured so its output decreases
Zero
)
; bridge configured so output increases
6
− ⋅
4 10
V
r
+
GF
(
1 2
V
)
r
6
− ⋅
4 10
V
r
+
ν
−
ν
−
GF
[(
1
)
2
V
(
)] 1
r
+ε
, the other parallel to
6
− ⋅ 2 10
V
r
µε =
GF
+ε
, the other 2 parallel to
6
−10
V
r
µε =
GF
:
6
− ⋅
2 10
V
r
µε
=
ν
+
GF
(
1
)
−νε
+ε
and
, the other half
6
− ⋅
2 10
V
r
=
ν
+
−
ν
−
GF
[(
1
)
V
(
1
)]
r
−ε
:
−ε
:
−ε
+ε
and
:
−νε
+ε
and
.:
8-27
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Table des Matières
