MTS Multipurpose Elite - Manual (Page 327)

Description Item
Opens the Cycle Decimation Filter Selection window to further specify which
cycles to acquire. The raw data is saved for the acquired cycles. Select Cycles
Note:
The cycle decimation filter settings do not affect data that is saved to a
variable.
Cycle
Cycle Activity Overview
Cycle Activity Icon
The Cycle activity commands the control signal to cycle between two different end levels at a specified
frequency, using a specified wave shape, for a specified number of cycles. Two end levels form one cycle.
The number of cycles determines the required number of end levels. The frequency determines the speed
required to achieve the end levels.
The method for cycling between the two end levels is controlled by the Control Mode, which can be specified
in terms of force, strain, or displacement. The End Levels specify the amount of force or strain to apply or
the distance to displace, while the Frequency specifies the speed it should take to achieve the end levels.
The Wave Shape specifies the shape of the signal, which also governs the type of command rate between
each end level, which can produce a constant linear rate (as with a ramp shape) or a varying rate (as with
a sine shape).
Note:
Specify these settings for each channel.
In the following example, the Ramp activity commands an actuator force from 0.000 N to 2.000 N, and
then the cyclic activity starts. The cyclic activity varies the force between the end levels of 2.000 N and
4.000 N. The command applies force as a linear ramp shape from each end level. The frequency is 0.8333
Hz, as each cycle is 1.2000 seconds long (1/1.2 or 0.8333 cycles per second). The total number of cycles
is 2.5.
In both of the following graphics, “A” represents Cycle activity. “B”represents Ramp activity. “C” represents
the Command Signal.
MTS TestSuite | 327
Test Activities