Buildings.Fluid.Utilities.BaseClasses

Package with base classes for Buildings.Fluid.Utilities

Information

This package contains base classes that are used to construct the models in Buildings.Fluid.Utilities.

Extends from Modelica.Icons.BasesPackage (Icon for packages containing base classes).

Package Content

NameDescription
der_extendedPolynomial Polynomial that is linearly extended at user specified values

Buildings.Fluid.Utilities.BaseClasses.der_extendedPolynomial

Polynomial that is linearly extended at user specified values

Information

This function is the derivative of extendedPolynomial with respect to `x`.

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

Inputs

TypeNameDefaultDescription
Realx x value
Realc[:] Polynomial coefficients
RealxMin Minimum x value for polynomial
RealxMax Maximum x value for polynomial
Realder_x

Outputs

TypeNameDescription
Realder_yDerivative dy/dx

Modelica definition

```function der_extendedPolynomial
"Polynomial that is linearly extended at user specified values"
extends Modelica.Icons.Function;
input Real x "x value";
input Real[:] c "Polynomial coefficients";
input Real xMin "Minimum x value for polynomial";
input Real xMax "Maximum x value for polynomial";
input Real der_x;
output Real der_y "Derivative dy/dx";
protected
Integer N = size(c,1) "Number of coefficients";
algorithm
if x < xMin then
der_y := 0;
for i in 2:N loop
der_y := der_y + (i - 1)*xMin^(i - 2)*c[i];
end for;
elseif x < xMax then
der_y := 0;
for i in 2:N loop
der_y := der_y + (i - 1)*x^(i - 2)*c[i];
end for;
else
der_y := 0;
for i in 2:N loop
der_y := der_y + (i - 1)*xMax^(i - 2)*c[i];
end for;
end if;
end der_extendedPolynomial;
```

Automatically generated Thu Dec 8 16:34:52 2011.