Vibration Research Corporation VibrationVIEW, Manual

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VibrationVIEW Help 173
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Peak, Triangle, Trapezoid, Square, Haversine, and User-Defined.
For the Trapezoid pulse type, you must also enter the Ramp-Up and Ramp-Down times, in
milliseconds.
To create non-oscillatory shock waveforms on shakers, it is necessary to add acceleration components
before and/or after the pulse to ensure that the shaker begins and ends with zero displacement and
zero velocity. You must enter the maximum acceptable acceleration values before and after the pulse,
in terms of a percentage of the pulse's peak amplitude. To have compensation only after the pulse,
enter 0% for the peak acceleration allowed prior to the pulse. To have compensation only prior to the
pulse, enter 0% for the peak acceleration allowed after the pulse. If compensation is allowed both prior
to and after the pulse, the compensation waveforms will be optimized to center the displacement
waveform.
The "Convert pulse to SRS" button will compute the SRS of the currently selected pulse type, and
transfer those settings to the SRS tab.
The tabs along the top of the dialog box are used to select the following parameter entry screens:
Pulse Select pulse type
Schedule Enter number of pulses and scaling factors.
Parameters Enter control loop parameters
Limits Enter the safety limits
Channels Select control channel(s)
Data Storage Set automatic data storage settings
Import Import user-defined waveforms from an ASCII file
Breakpoints Define the Frequency/Amplitude breakpoints of the desired SRS curve
SRS Define the SRS analysis parameters, and synthesize waveform
4.4.2 Schedule tab
Shock Define Schedule tab
Clicking the "Schedule" tab on the Test..Edit Test Settings dialog box accesses this dialog box.
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