COMP 522 Modelling and Simulation Project Presentation

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COMP 522 Modelling and Simulation Project
Presentation

• Project Title
• Use the multi-formalism modelling and simulation
  tool Ptolemy II to study a personalized rapid
  transportation system
• Presented by
• Onur DUMAN
• onur.duman_at_mail.mcgill.ca

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Motivation

• Project was done using multi modelling and
  formalism tool Ptolemy II
• Transportation System Trains which are
  travelling between terminals.
• Both time concept and event concept are taken
  into account during modelling

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Motivation(2)

• Usage of Modal Model feature of Ptolemy II
• Simulation will be done by getting a trace of
  locations that the train has passed
• State of train is mainly dependent on location of
  train

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Proposal/Requirements

• Four trains and six stations.
• Each train has an initial location given at the
  start
• Train can depart if there is no train 100 yards
  front of the train

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Proposal/Requirements(2)

• Train will go with its maximum speed unless there
  is another train within 80 yards after the train
• Trains follow a circular track
• Each train has a passenger button

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Proposal/Requirements(3)

• If train stops at a station, it will wait 90
  seconds before the next departure.
• If there are no trains within 100 yards of the
  train, it will depart

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DesingAndModels

• Both Statecharts and Block Diagrams are used
• Firstly, simple functional blocks, which will be
  used for complicated tasks are modeled

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DesignAndModels(2) - TrainDistanceComparator
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DesignAndModels(3) - TrainComparisonUnit
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DesignAndModels(4) - ComparisonUnitForShortDistanc
e
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DesignAndModels(5) - TerminalDistanceAndNumber
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DesignAndModels(6) - TrainModel
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DesignAndModels(7) - TrainFunction
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DesignAndModels(8) - TrainRunning
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DesignAndModels(9) A Simple Delay
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DesignAndModels(10) Operation for Passenger
Button
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DesignAndModel11 - CompleteModel
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Implementation

• Performed using Ptolemy II tool
• Each model discussed above is implemented as a
  seperate file instead of simple units So, 6 XML
  Files
• completeTrainModel.xml
• terminalDistanceAndNumber.xml
• trainComparisonUnit.xml
• trainDistanceComparison.xml
• trainModel.xml
• trainShortDistanceComparison.xml

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Experiments

• Two experimental configurations
• Firstly, train initially at position 195, it is
  scheduled to stop at station 4, but a passenger
  requests to stop at station 1 by pushing the
  button but after stopping for 90 seconds, train
  can not continue because there is another train
  at 300( stopped train is at 200)

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Experiments(2)
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Experiments(3)

• Outputs
• Train Locations
• 196 197 198 199 200 200 200 200 200 200 200
• Train Next Stations 4 4 4 1 1 1 1 1 1 1 ( at
  fourth iteration a passenger requested to stop at
  station 1( nearest station) )

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Experiments(4)

• Train is at location 195 initially, stops at
  station located at 200, and after stopping
  continues its travel because there is no train
  after 100 yards from the train.

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Experiments(5)
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Experiments(6)

• Output
• Train Locations
• 196 197 198 199 200 200 200 201 202 203 (After
  stopping at station 1, train can continue its
  travel)
• Train Next Stations
• 0 0 0 1 1 1 1 1 1 1 ( at fourth iteration a
  passenger requested to stop at station 1( nearest
  station) )

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Conclusion

• Study of public transportation system using
  Ptolemy II
• Trains travel counterclockwise and if there is a
  passenger is going to get off at the next
  station, the train stops at the station
• Train maintains its speed according to its
  distance to the train in front of it

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Conclusion(2)

• State of the train and variables of the train(
  location and next station) change according to
  location of train and calculations done according
  to locations of all the trains
• Delay was introduced in order to simulate stop at
  station

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Live Demo

• A demo of experiment 1 and experiment 2

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References

• Transportation System inspired from the article
• Executable Object Modelling with Statecharts
• http//ieeexplore.ieee.org/iel1/2/13072/00596624.p
  df?isNumber13072
• Ptolemy II Documentation and Tutorials
• http//ptolemy.berkeley.edu/ptolemyII/

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Thanks for Listening

• Any questions?
• Any comments?