Simulation


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):

  1. The simulation goal and the investigations to be performed are defined
  2. A simulation system is selected for performing the simulation (generally a specific software)
  3. A model of the system is constructed ("modeled" using the simulation system) which permits the planned investigations
  4. 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

  1. important investigations cannot be conducted on a real system,
  2. 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!

Siemens AG Österreich, Program and Systems Engineering PSE
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Last modified: 08/27/98 15:42
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