Moog ACV with CANopen bus interface
7 Servo valve functions
Flow control
B99224-DV018-D-211, Rev. A, October 2018
218
7.12 Flow control
The flow control mode is used to control the flow (and so the cylinder velocity) independent to the load (pres-
sure) on the cylinder. To reach this target, the non-linear influence of the pressure in the cylinder cambers is
compensated with the so called Bernoulli compensator.
Figure 130: Flow control
Chapter "7.10.2 Axis velocity actual value", page 210
7.12.1 Object 0x5213: Deviation value
This parameter holds the deviation between the flow demand filter value and the flow feedback value.
7.12.2 Object 0x5200: Bernoulli output
This parameter holds the Bernoulli output of the flow position controller.
7.12.3 Object 0x520F: Controller output
This parameter holds the controller output of the flow position controller.
Flow actual value
selection
#F
lo
wD
ema
ndV
al
ue
#
#Fl
o
w
A
ct
ua
lV
alue
#
-
Flow demand value
scaling
<V
elD
e
mamd
V
a
lue>
(0
x5
615
)
Feedback axis
velocity proportional
element
Bernoulli
compensation
X
#KpOutput#
#Flow
#
<
B
er
nu
lliOutpu
t>
(0
x5
200
)
#C
on
tr
oller
O
ut
pu
t#
<Flw
C
ontr
o
ller
O
u
tp
ut
>
(0
x520
F)
Pressure transducer
selection
<A
ct
ualV
a
lu
e1
..
.8
>
(0x6
11
0.
..
0x
61
17)
Leakage
compensation
<Flow
D
e
via
tionV
alu
e
>
(0
x521
3)
Signal limitation
A
n
y
si
gn
e
d 16
/3
2 bi
t
p
a
ra
m
et
er
fr
om t
he ob
jec
t dic
tiona
ry
Sample frequency
ValveFlowControl
Index
Sub-index
Parameter name
Data type
Access
Per-
sis-
tence
Value range
Default
0x5213
0
FlwDeviationValue
INT16
ro
-
INT16
None
ValveFlowControl
Index
Sub-index
Parameter name
Data type
Access
Per-
sis-
tence
Value range
Default
0x5200
0
BernoulliOutput
INT16
ro
-
INT16
None
ValveFlowControl
Index
Sub-index
Parameter name
Data type
Access
Per-
sis-
tence
Value range
Default
0x520F
0
FlwControllerOutput
INT16
ro
-
INT16
None
