1b MS Overview in modeling simulation.ppt

powerpoint presentation

1. CS 351
Overview
Spring 2012
Modeling and Simulation
Technologies
Dr. Jim Holten

2. CSE 351
Modeling and Simulation
•Why simulate?
•Simulator components
•Simulator technologies

3. CSE 351
Why Simulate?
•Predict behavior before building
•Predict for future expectations
•System characterization testing
•Pretend (virtual environments)

4. CSE 351
Before Building
•Prototypes are often cheaper than building
•Proof-of-concept
•Evaluate design trade-offs
•Sell concepts to others

5. CSE 351
Predicting the Future
•Weather forecasts, hurricane paths
•Stock market
•Satellite and asteroid orbits and changes
•Earthquakes

6. CSE 351
System Characterization
•Sensitivity analysis
•Accuracy determination
•Behavior familiarity

7. CSE 351
Virtual Environments
•Training tools
•Interactive controller
•Realism experience for system use
•Games

8. CSE 351
Simulation Components
•The model
•The environment –equipment, software
•Inputs –Initialization, updates
•Outputs –Numbers, plots, animations

9. CSE 351
Simulation Environment
•Computer hardware
•Operating system
•Programming language(s)
•Supporting tools

10. CSE 351
Simulation Model
•Environment states (variables)
•Internal states (variables)
•Time handling (scaled steps or events)
•State interpretations

11. CSE 351
Simulation Inputs
•Initial setup
–Environment variables
–Model variables, and
–Output specifications/selections
•During run (periodic and interactive)

12. CSE 351
Simulation Outputs
•All states (allows restarts)
•Snapshots of some states
•Statistics on model states and overall run
•Metadata –data about the data (units, etc)

13. CSE 351
Simulation Technologies
•Simulation environments
•Programming/modelling languages
•Model characteristics supported

14. CSE 351
Simulation Technologies
To be continued