INTERN Model Instance

The INTERN model instance is used for internal simulator models, which are provided of the BASIC ELEMENTS model library. The keyword INTERN can be omitted. Internal models in the Basics library are:

• Circuit components to model electrical circuits.
• Block diagrams to model control and cybernetic systems consisting of different blocks with typical transfer behaviors.
• State graphs to model discontinuous processes as event oriented, based on Petri Net theory. This type of model divides a system into: significant states and events, transfers from one state to the other.
• Time functions to provide time behavior for different components. The time functions can be divided into predefined and user-defined time functions.
• Characteristic functions to model nonlinear characteristics in the form of y=f(x).

Internal models can be divided into models with fixed behavior and models with user-defined behavior.