8-66
Drive Functions
MPH-02, MPB-02, MPD-02
DOK-INDRV*-MP*-02VRS**-FK01-EN-P
Gradient of the straight line:
∑
∑
∑
∑
∑
−
×
×
−
×
×
=
)²
(
²
)
(
_
_
_
_
n
act
n
act
kn
n
act
kn
n
act
x
x
n
x
x
x
x
n
a
n:
number of measured values
x
act_n
:
actual position at which a correction value x
kn
was measured
x
kn
:
correction value at x
act_n
Fig. 8-55:
Auxiliary equation 1 for determining reference point
Intersection point of straight line and correction value axis (x
k
):
∑
∑
∑
∑
∑
∑
−
∗
∗
∗
−
∗
=
)²
(
²
)
(
²
_
_
_
_
_
n
act
n
act
kn
n
act
n
act
n
act
kn
x
x
n
x
x
x
x
x
b
n:
number of measured values
x
act_n
:
actual position at which a correction value x
kn
was measured
x
kn
:
correction value at x
act_n
Fig. 8-56:
Auxiliary equation 2 for determining reference point
Measured errors at T
act
= 45°C (reference temperature T
0
= 23°C):
n
X
act_n
(actual position val. 1)
in mm
x
kn
(error) in mm
1
+10.0000
-0.0300
2
+70.0000
+0.0100
3
+105.0000
+0.0250
Fig. 8-57:
Example of a series of measurements for temperature correction
Resulting measuring points:
P = [X = X
act_n
; X = x
kn
]
•
P1 = [+10.0mm;-0.03mm]
•
P2 = [+70.0mm;+0.01mm]
•
P3 = [+105.0mm;+0.025mm]
•
n = 3
Partial sums for auxiliary equations:
∑
∑
∑
∑
=
+
+
−
=
∗
=
+
+
=
=
+
+
=
+
=
+
+
−
=
2
2
_
2
2
_
_
025
.
3
)
625
.
2
7
.
0
3
.
0
(
16025
²)
105
²
70
²
10
(
²
0
.
185
)
0
.
105
0
.
70
0
.
10
(
005
.
0
)
025
.
0
01
.
0
03
.
0
(
mm
mm
x
x
mm
mm
x
mm
mm
x
mm
mm
x
kn
n
act
n
act
n
act
kn
Fig. 8-58:
Partial sums for auxiliary equations
0005884
.
0
2
13850
2
15
.
8
2
)
0
.
185
(
2
16025
*
3
005
.
0
*
0
.
185
2
025
.
3
*
3
=
=
−
−
=
mm
mm
mm
mm
mm
mm
mm
a
Fig. 8-59:
Auxiliary equation 1
Example
Courtesy
of
CMA/Flodyne/Hydradyne
▪
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Control
▪
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▪
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▪
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