functionrelaxation

Exponential relaxation function

Extends from Modelica.Icons.Function (Icon for functions).

Information

The function has two components, y[1] decreasing and y[2] increasing.

For

  0 ≤  t <  t_relax
  y[1] decreases exponentially from 1 to 0
  y[2] increases exponentially from 0 to 1

For

  t <  0 and t &ge  t_relax
  y[1] = 0
  y[2] = 1

i.e. for negative t y takes its asymptotic values.

Type	Name	Description
Real	t	relative time
Real	t_char	characteristic time
Real	beta	power of exponent

Type	Name	Default	Description
Real	y		relaxation function {decreasing, increasing}