.BondLib.Passive.CF

Information

The bondgraphic TwoPort capacitive field is a symmetric TwoPort element. It inherits the effort and flow variables from the symmetric TwoPort. The capacitance values are modeled as a set of three parameters. The symmetric capacitance matrix is manually inverted to speed up the compilation.

The TwoPort capacitive field has preferred causalities at the CF element.

Potential variables:

 e1:   Bondgraphic effort variable of inflow

 f1:   Bondgraphic flow variable of inflow, normalized positive for flows into the model

 e2:   Bondgraphic effort variable of outflow

 f2:   Bondgraphic flow variable of outflow, normalized positive for flows into the model


Parameters:

 C1:   Primary capacitance (default value = 1)

 C2:   Secondary capacitance (default value = 1)

 C12:  Coupling capacitance (default value = 0)

Equations:

Det = C1*C2 - C12²
Cinv1 = C2/Det
Cinv2 = C1/Det
Cinv12 = -C12/Det

der(e1) = Cinv1*f1 + Cinv12*f2
der(e2) = Cinv12*f1 + Cinv2*f2

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