Convert values using a
polynomial equation with up to ten
VeriStand requires two direction
for a polynomial scale. They are a forward
polynomial to convert pre-scaled values to scaled values and a reverse
polynomial to convert scaled values to pre-scaled values.
Launch the VeriStand Editor.
In the Project Files pane, double-click a system definition file
System Explorer opens.
Right-click Scales and select .
On the new scale's Polynomial Scale Configuration page,
enter the scale Name and Units to
associate with the scaled values.
The units you enter will
supersede the units associated with the channel.
In the Coefficients drop-down menu, choose one of the
following directions for the coefficients table.
||Coefficients table represents a polynomial from pre-scaled to scaled
||Coefficients table represents a polynomial from scaled to pre-scaled
Enter Coefficients for an order of the polynomial in the
table control, where the coefficients are a0, a1,
a2,...an for your polynomial scale y = a0 +
a1x + a2x2 + … +
For forward coefficients,
y is the scaled data and x
is the raw data. For reverse coefficients, x is the
scaled data and y is the raw data.
Save the system definition file.
After creating a direction coefficient, you can click
to use regression analysis to estimate coefficients
for the opposite direction. In the dialog box, enter a Minimum
value for the raw range and click