Moog ACV with CANopen bus interface
7 Servo valve functions
Function generator
B99224-DV018-D-211, Rev. A, October 2018
261
7.18 Function generator
The servo valve internal function generator can be used to generate a periodic signal with specific shapes,
thereby enabling an engineer or technician to test and examine a servo valve.
The function generator has two outputs:
• An output signal
This signal can be used e.g. as setpoint value for the servo valve to optimize the servo valves behavior.
Different shapes, amplitude and offset can be configured.
Chapter "7.18.3.1 Object 0x3101: Output signal", page 264
• A trigger signal
This is a rectangular signal, with fixed amplitude, without offset.
This signal can be used e.g. to trigger the data logger.
Chapter "7.18.3.2 Object 0x3102: Square output (Trigger signal)", page 265
7.18.1 Function generator output signal shapes
The function generator output signal can be influenced by changing the function type, the magnitude, the off-
set, the sign or the frequency. The available shapes and the parameters to define the shapes are explained in
this chapter.
7.18.1.1 Rectangular output signal (type 1)
Figure 152: Rectangular output signal (type 1)
7.18.1.2 Triangle output signal (type 2)
Figure 153: Triangle output signal (type 2)
T=1/f
t
32768
-32768
M
16384
-16384
<FunctionGenOutput>
(0x3101)
f = <FunctionGenFrequency> (0x3103) * #Factor# [Hz]
M = <FunctionGenMagnitude> (0x3104)
<FunctionGenType> (0x3100) = 1 (Rectangular)
T=1/f
t
16384
-16384
8192
-8192
<FunctionGenType> (0x3100) = 2 (Triangle)
f = <FunctionGenFrequency> (0x3103) * #Factor# [Hz]
M = <FunctionGenMagnitude> (0x3104)
<FunctionGenOutput>
(0x3101)
M
