Polynomial function in SDF

[n28et]

Hello Dynon,

I am trying to understand the polynomial function contained within the sensor definition file.  What do c_x4=, c_x3=,...c_x0 equate to?  Are we dealing with a quadratic equation such as  "Y = A + BX + CX2 + DX3 + EX4"?  Any insight is appreciated.

Thank you.
Erich

 

[dynonsupport]

Have you read the wiki on creating sensor files?

http://wiki.dynonavionics.com/Making_your_own_sensor_definitions

As you guessed, these are the coefficents for a 4th order polynomial:

Y = (X^4*c_x4) + (X^3*c_x3) + (X^2*c_x2) + (X*c_x1) + c_x0

X is in volts, Y is in the units of output (PSI, deg F, etc)

 

[n28et]

Have you read the wiki on creating sensor files?

http://wiki.dynonavionics.com/Making_your_own_sensor_definitions

As you guessed, these are the coefficents for a 4th order polynomial:

Y = (X^4*c_x4) + (X^3*c_x3) + (X^2*c_x2) + (X*c_x1) + c_x0

X is in volts, Y is in the units of output (PSI, deg F, etc)

Dynon Support,

Got it.  Thank you for the prompt reply. 
Erich