How do I implement a polynomial function to receive a desired output?

[belae1ka]

I am acquiring data from a NI USB-6002 DAQ.

I want to convert a voltage value to a displacement value.

In Microsoft Excel I made a table. I recorded voltage values and the corresponding displacement values.

I plotted the data and the best fitting line was a fourth order polynomial function which looked like this;                         Y = A + BX + CX^2 + DX^3 + EX^4

*A,B,C,D, and E are all constants which I have values for

*Y is the displacement value which I would like to ultimately receive

*X is the voltage value coming from the DAQ.

I am having trouble creating the block diagram for the polynomial function I would like to implement. I tried using the math functions but I'm not sure how to add a power to the data coming from the DAQ.

Any feedback would be highly appreciated.

Thank you.

[GerdW · Accepted solution]

You could use the "Polynomial Evaluation" function to apply your polynomial coefficients on your X data…

(Otherwise use those simple numeric functions like Add and Multiply!)