Add Controlled Sources to components library about bondgraphtools HOT 1 CLOSED

Hi diepala,

I would suggest having a read of this review of bond graph modelling. The TLDR is that effort and flow sources like a controlled current source or voltage source are in the standard library as 'Se' and 'Sf' components respectively.

Amplifiers, such as what you have described about are un-physical because the require infinite effort or flow.
If you look at your constitutive relations for the effort amp, you must have $0 >= P_0 + P_1 =e_0f_0 +e_1f_1 = e_1(ae*f_0 - f_1)$. If we have equality, then you have re-created a transformer. If we have inequality, we have a transformer and a resistor of some variety.

In practice, amplifiers are made up of nonlinear components such as transistors, which satisfy K.C.L and K.V.L and hence dissipate or store energy, not create it.

Feel free to implement op-amps if you require them, but for the time being we'd like to keep all energy-injecting components in the base libraries as sources such as 'Sf' and 'Se' components.

Closing for now, but happy to revisit this later if there is enough interest.

from bondgraphtools.