Moog ACV with CANopen bus interface
7 Servo valve functions
Pressure controller
B99224-DV018-D-211, Rev. A, October 2018
180
7.5.15 Derivative element (PD)
This element differentiates the pressure actual value <PrsActualValue> (0x6381) with a differentiator element
including a first order filter with a time constant T1. Also a proportional gain element is implemented.
Figure 86: Proportional derivative element 1 (PD)
7.5.15.1 Object 0x2308[N]: Differentiator gain
This parameter contains the gain of the first differentiator.
7.5.15.2 Object 0x2309[N]: Differentiator T1
This parameter contains the time constant of the first differentiator in seconds.
7.5.15.3 Object 0x2324[N]: Spool Position Feed Forward Gain
The gain controls the influence of the spool position to the derivative element (PD).
f(x)
<DifferentiatorT1>
(0x2309[N])
<SpoolPositionFeedForwardGain>
(0x2324[N])
<DifferentiatorGain>
(0x2308[N])
<SplActualValue>
(0x6301)
<DifferentialPart>
(0x2312)
<PrsActualValue>
(0x6381)
ValvePressureControl
Index
Sub-index
Parameter name
Data type
Access
Per-
sistence
Value range
Default
0x2308
N=1…16
DifferentiatorGain
FLOAT32
rw
Y
–inf…+inf
0.0
ValvePressureControl
Index
Sub-index
Parameter name
Data type
Access
Per-
sistence
Value range
Default
0x2309
N=1…16
DifferentiatorT1
FLOAT32
rw
Y
0.0…+inf
0.0
ValvePressureControl
Index
Sub-index
Parameter name
Data type
Access
Per-
sistence
Value range
Default
0x2324
N=1…16
SpoolPositionFeedForwardGain
FLOAT32
rw
Y
0.0…+inf
0.0
