MTS Fatigue Analyzer - Manual (Page 92)

• All Variables—Shows all variables, including variables that do not have a calculation. You can change
the variable to include a calculation or change an existing calculation by selecting the variable and clicking
the Create or Edit Calculation button. Make sure that all calculation references are resolved.
Save variables
Select one or more variables to store the value in the raw data file for each group. Cyclic data is stored at
the end of each cycle. Group data is stored at each boundary, such as a step or segment. Non-cyclic data
is stored at the end of the data acquisition. The stored data lets you reset the value at each capture point of
the acquisition.
To specify a variable, click + or - and select one or more variables.
7.6.2.0 Mapping a Signal to a Variable
To map a signal to a variable using the Data Acquisition Editor:
1. Select Filter variables by dimension and calculation type to configure the list of variables that are
suitable to map to signal data.
2. Click the Variable box of the row of the signal to map.
3. Click the drop-down button and select a variable or .
If you select , the New Numeric Variable window opens.
4. Click OK.
7.6.3.0 Mapping Additional Variable Calculations
To map additional variable calculations using the Data Acquisition Editor:
1. In the Available Calculations panel, select one of these radio buttons to configure the list of variables:
• Signal Dependent Variables
• Calculated Variables
• All Variables
2. Select a calculation that you want to occur each cycle.
3. Click the right arrow button next to the calculation to go to the Additional Cycle Calculations panel.
4. Click Close.
7.6.4.0 Tagged Blocks
Data collection can result in a block with incomplete or invalid data if a collection limit is reached or a failure
occurs, such as a hardware shutdown or restart. The capability to tag one or more blocks for exclusion allows
the data to be successfully analyzed.
Process
You can detect that the data is incomplete due to a failure issue by viewing an Array-Variable chart and a
Hysteresis chart. An Array-Variable chart shows you the entire range of data. An irregularity in the pattern or
92 MTS TestSuite™ Fatigue Analyzer User Guide
7.0 Variable Analysis