Moog ACV with CANopen bus interface
7 Servo valve functions
Pressure controller
B99224-DV018-D-211, Rev. A, October 2018
181
7.5.16 Feedback derivative element (PD)
This element differentiates the pressure actual value <PrsActualValue> (0x6381) with a real differentiator ele-
ment including a first order filter with a time constant T1. A gain element is below this differentiator.
Figure 87: Proportional derivative element 2 (PD)
7.5.16.1 Object 0x5863[N]: Differentiator gain 2
This parameter contains the gain of the second differentiator.
7.5.16.2 Object 0x5864[N]: Differentiator T1 2
This parameter contains the time constant of the first differentiator in seconds.
7.5.16.3 Object 0x5858N]: Spool Position Feed Forward Gain_2
This gain controls the influence of the spool position to the feedback derivative element (PD).
f(x)
<DifferentiatorT1_2>
(0x5864[N])
<SpoolPositionFeedForwardGain_2>
(0x5858[N])
<DifferentiatorGain_2>
(0x5863[N])
<SplActualValue>
(0x6301)
<kdFeedbackOutput>
(0x5862)
<PrsActualValue>
(0x6381)
ValvePressureControl
Index
Sub-index
Parameter name
Data type
Access
Per-
sistence
Value range
Default
0x5863
N=1…16
DifferentiatorGain_2
FLOAT32
rw
Y
–inf…+inf
0.0
ValvePressureControl
Index
Sub-index
Parameter name
Data type
Access
Per-
sistence
Value range
Default
0x5864
N=1…16
DifferentiatorT1_2
FLOAT32
rw
Y
0.0…+inf
0.0
ValvePressureControl
Index
Sub-index
Parameter name
Data type
Access
Per-
sistence
Value range
Default
0x5858
N=1…16
SpoolPositionFeedForwardGain_2
FLOAT32
rw
Y
0.0…+inf
0.0
