Modelica is mainly designed for modeling and simulation of continuous-time systems. There are a lot of available Modelica components for developing continuous-time models in many different domains (electrical, mechanical, thermodynamical,...).
Using the DEVSlib implementation of the Parallel DEVS formalism and the Modelica capabilities for modeling continuous-time systems, it is possible to model and simulate hybrid systems. These kind of hybrid systems usually contain two parts, one continuous and another discrete, that must communicate somehow. This communication has been implemented in DEVSLib using the following interface models.
The communication from the continuous part to the discrete part is performed using three models: the Quantifier, the CrossUP and the CrossDOWN.
An example of this kind of communication is shown in the next figure.
The communication from the discrete part to the continuous part is performed using the DICO model. This model translates the value of the received messages from the discrete part into a continuous (Real) signal. The generated continuous signal is a constant piecewise signal, since the changes in the value of the signal are generated by the arrived messages.
An example of this kind of communication is shown in the next figure.
