Feature to break the simulation when the steady state has been reached

[Adrian Pop]

Proposed here:
​http://stackoverflow.com/questions/42673420/global-measure-to-test-when-steady-state-of-system-is-reached

The first point sounds like a good to have feature and doesn't seem that hard to implement, basically a terminate when all the ders are 0 (within an epsilon) for a number of steps.

For the second point we would need a global operator that returns true when all ders are within an epsilon interval that one can use in equations to enable / disable parts of the system.

[Lennart Ochel]

I can take care of the first point.

[Adrian Pop]

For the second point we could propose an extension of the Modelica Specification with an operator called steadyState(epsilon) which would return true if each of the ders are < epsilon.

The only issues to think about is what to return during initialization when the ders are zero, etc. I guess we can safely return false for any other phase than simulation.