Hydraulic pressure regulator model

We will now consider a more complex model, involving hydraulics.

Figure 13: Activity Index results obtained in case of steady-state behavior

We can see that all activities are dominated by dissipations in the R-elements.

This can be explained by a Bond-graph analysis of the dynamic structure of this pressure regulator model:

Figure 14: Theoretical explanations with Bond-Graphs theory of the Activity Index results obtained in case of steady-state behavior

Note that if some instability problems occur, some elements will present higher activity.

These elements cannot be ignored anymore.

Figure 15: Activity Index results obtained in case of unstable behavior