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What is simulation used for?
Simulation is used for checking the modes of behavior of
a system to be checked. It does so using a model.
Simulation is used wherever investigations of this type
cannot be performed on the real system. How
do I perform a simulation?
To perform a simulation, four coordinated steps need to
be carried out (roughly speaking):
- The simulation goal and the investigations to be
performed are defined
- A simulation system is selected for performing
the simulation (generally a specific software)
- A model of the system is constructed
("modeled" using the simulation system)
which permits the planned investigations
- Suitable experiments are drawn up and are
performed on the model using the simulator in the
simulation system.
When should simulation be performed?
Simulation should always be provided if
- important investigations cannot be conducted on a
real system,
- the effort for the simulation (simulator,
production of models, conducting experiments) is
in a reasonable relationship to the benefits
derived.
What are typical cases for using
simulation?
- Experiments for ascertaining the ability of a
hospital logistics system to bear stress in the
event of a disaster
- Experiments to ascertain the behavior of a
communications network if important components
fail
- Experiments to optimize the configuration of
large systems
- Experiments to optimize the elevator control in
an apartment block
What you should remember!
- Simulations always require a suitable simulation
system (modeler, simulator). "Suitable"
means that it is designed for intentional
modeling and investigation - there are specific
simulators for communications systems, production
control, etc.
- Simulation systems are generally very expensive;
consequently, they are generally not an option
for one-off use or for small investigations
- Learning simulation technology and using
simulators requires considerable time;
consequently, you should always try to use
suitable experts if they are available.
- The models used for the simulation must simulate
those features of a real system which are
necessary for the intended investigations. This
can be very effort-intensive!
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