(Event|Time)-Variant Operators (ETVO)

ETVO is a set of C++ classes to compute transfer series for Weighted Timed Event Graphs and for Timed Event Graphs with partial synchronizations. Either the user downloads the C++ sources and writes user programs in C++ or uses a basic calculator now available online.

NEW A first experimental « online version » (compiled with Emscripten) with the syntax of the calculator etvoEM.html 

NEW A second experimental « online version » (compiled with Emscripten) dealing with series that are both Event-variant and Time-variant etvoEM_ET.html 

How to use the Calculator/Interpreter  :CalculatorETVO.pdf

Example : a Timed Event Graph that is Event-variant and Time-variant simTrans.html scriptExample.txt

This version 2.2 (06/10/2021) is still a Beta version. StartUpInstructions.pdf

etvolib2.2.zip: C++ sources and examples

Documentation (created with Doxygen)

ETVOintroduction.pdf (An introduction to Event-variant and Time-variant Operators handled in ETVO)

Animations: some animations to illustrate the behaviour of max-plus, E-variant and T-variant systems, in the context of manufacturing systems (conveyors, machines, synchronisations, batch ...). These are the examples treated in the Examples chapter of the ETVO introduction.
Example 1: A max-plus system that can be modelled by a TEG. 3 equivalent systems are simulated in parallel. Example1
Example 2: Example 1 with a neutral output feedback. Example2
Example 3: A system with E-operators (batch,duplicate). An equivalent E-variant system is simulated in parallel. Example3
Example 4: A system with E-operators (demux/mux). An equivalent E-variant system is simulated in parallel. Example4
Example 5: A system with E-operators (demux/mux). An equivalent E-variant system is simulated in parallel. Example5
Example 6: A system with a variant delay (T-operator). An equivalent T-variant system is simulated in parallel. Example6
Example 7: A system both E-variant and T-variant. An equivalent system is simulated in parallel (with T-variant and demux). Example7
Example 8: A production cell both E-variant and T-variant. An equivalent system is simulated in parallel (with 3 synchronized T-variant systems adn E-operators). Example8

For any question : send an email to bertrand.cottenceau(at)univ-angers.fr