MTS Multipurpose Elite User Manual
Page 332
Description
Item
•
kHz—kiloHertz; 1 kHz equals 1000 Hz
Specify the number of end levels. Click the toggle button to specify
a numeric value and unit of measure or variable.
Number of Cycles
When using the numeric mode, the resulting number of end levels
can be specified by the number of Segments or by the number
of Cycles. A segment has one end level and a cycle has two end
levels.
Select a compensator to improve the tracking and accuracy of
the control loop for the selected channel. For more information
Compensator
about compensators, see
(p. 133). The
following compensators may be available with the Cycle activity.
•
No Compensator
•
Static Null Pacing—Static null pacing holds the command at
its segment boundaries to allow the sensor feedback more
time to reach its target peak.
•
Dynamic Null Pacing—Dynamic null pacing reduces the
command frequency to allow the sensor feedback more time
to track the command.
•
Peak-Valley Amplitude Control—Monitors cyclic command
feedback for any amplitude roll-off or mean-level divergence.
Peak-Valley Amplitude Control increases the command
amplitude if it detects amplitude roll-off in the feedback signal.
This compensator adjusts the mean command level if it detects
mean-level divergence in the feedback signal.
•
Peak-Valley-Phase—Improves the amplitude and phase
tracking of the command and sensor feedback.
Peak-Valley-Phase compensates for phase error, unlike
Peak-Valley-Amplitude Control. Peak-Valley-Phase provides
good amplitude tracking on nonlinear specimens.
Peak-Valley-Phase adjusts the mean command level if it
detects mean-level divergence in the feedback.
Select an Interrupt behavior:
Advanced
•
Interrupt Immediately—Complete immediately at the current
level.
•
Interrupt at End of Cycle—Complete the current cycle before
ending the branch or loop.
Relative End Levels—Select to specify that the values of the
end levels are relative to the value of the control mode command
signal at the time the activity begins executing. When not checked,
end levels are relative to setpoint.
332 | MTS TestSuite
Test Activities