Specifications

Curve Fitting and EU Generation
regr1419.vee: This program operates stand-alone. It shows how the Agilent VEE
regression tools can be used to generate a polynomial equation to fit volts and
pressure. The generated equation can then be used in the eu_1419.vee module for
converting volts to pressure during data acquisition of the VT1419A.
The “Fit To 4th Order Poly” object takes the data pairs entered into the “Voltage vs.
Pressure” text object and generates the coefficients that can be entered into a 4th
order polynomial. The coefficients are automatically entered into the “4th Order
Poly Formula” object and a dry-lab example of a 2.5 volt input to the formula
results in the 49.5685 PSI output. This is what the EU conversion would perform in
the VT1419A if that 4th order polynomial were entered into the EU Conversion
table object. Simply use the same formula generated by this example along with the
specified coefficients.
VEE Programming Examples
Curve Fitting and EU Generation
160 Chapter 5
Figure 5-11: Curve Fitting and EU Generation
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