Modelling specified linear Alpha characteristics

Fit to linear Alpha characteristics

The following slideshow containing reproductions of the piecewise fittings to the linear Alpha characteristics. These have been separated for improved clarity, and can be scrolled through with the arrows at each side of the image.

(1/6) Alpha linear characteristic B.
(2/6) Alpha linear characteristic 1B.
(3/6) Alpha linear characteristic 2B.
(4/6) Alpha linear characteristic 3B.
(5/6) Alpha linear characteristic 4B.
(6/6) Alpha linear characteristic 5B.


Transitional values of piecewise function for linear characteristics

The corresponding transitional values for these functions are shown in the below table.

Optimised transition points of the general cubic-linear piecewise function, fit to the linear potentiometer characteristic specified on the Alpha website. Values are rounded to 3 decimal places.
B 1B 2B 3B 4B 5B
x y x y x y x y x y x y
- 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
Lin. 0.050 0.000 0.055 0.000 0.113 0.006 0.163 0.018 0.155 0.032 0.296 0.032
Cub. 0.125 0.071 0.294 0.231 0.352 0.283 0.457 0.433 0.415 0.296 0.420 0.198
Lin. 0.932 0.997 0.763 0.863 0.741 0.877 0.661 0.816 0.574 0.719 0.565 0.803
Cub. 0.935 0.998 0.921 0.996 0.955 0.999 0.931 0.997 0.795 0.958 0.699 0.973
Lin. 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000 1.000