OM.jl

A Modelica Compiler in Julia.

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• Note that this package is still under development

Developer instructions

Fetch all submodules:

git submodule update --init --recursive

Make sure that all submodules are on master

git submodule foreach "git checkout master && git pull"

Install manually be developing the subpackages

• Go to ImmutableList.jl
• Dev it using the Julia package manager
• Go to MetaModelica.jl
• Dev it using the Julia package manager
• Go to Absyn.jl

Using same procedure as above for: - ArrayUtil.jl - ListUtil.jl Once this is done develop SCode and last but not least the DAE.

Core modules

- Develop the OpenModelicaParser.jl
- Develop OMFrontend.jl
- Develop OMBackend.jl
- Develop the OM package

Since this is currently work in progress expect some warnings:)

Adding the OpenModelicRegistry

To work with the package manager and manage dependencies of these packages you also need to add the OpenModelicaRegistry. To do this issue: registry add https://github.com/JKRT/OpenModelicaRegistry.git This will add this additional registry.

TL;DR

julia julia> include("install.jl")

Example usage

Navigate to the test directory. cd test

```julia using Plots import OM OM.translate("HelloWorld", "./Models/HelloWorld.mo"); res = OM.simulate("HelloWorld"); plot(res)

= Resimulate the same model, from 0.0 to 2.0 =

sol = OM.resimulate("HelloWorld"; startTime = 0.0, stopTime = 2.0) plot(sol) ```

Simulating & Plotting a simple mechanical system. modelica model SimpleMechanicalSystem parameter Real J1 = 1 , J2 = 1; constant Real C = 1; Real u; Real Phi_1, Phi_2; Real omega_1 , omega_2; Real tau_1, tau_2, tau_3; initial equation omega_1 = 0; omega_2 = 0; Phi_1 = 0; Phi_2 = 0; equation u = time; // The Algebraic variables tau_1 = u; tau_2 = C * (Phi_2 - Phi_1); tau_3 = -tau_2; der(Phi_1) = omega_1 ; der(Phi_2) = omega_2; der(omega_1) = (tau_1 + tau_2) / J1; der(omega_2) = tau_3 / J2; end SimpleMechanicalSystem; Execute the following commands: ```julia using Plots import OM OM.translate("SimpleMechanicalSystem", "./Models/SimpleMechanicalSystem.mo"); sol = OM.simulate("SimpleMechanicalSystem"); plot(sol)

= Resimulate the system from 0.0 to 3.0 =

sol = OM.resimulate("SimpleMechanicalSystem"; startTime = 0.0, stopTime = 3.0) plot(sol) ```

Exporting Flat Modelica

Navigate to the test folder.

In the test folder we have the following Influenza model:

modelica model Influenza input Real Introduction = 77; Population Immune_Popul(p(start = 10)); Population Non_Infected_Popul(p(start = 100)); Population Infected_Popul(p(start = 50)); Population Sick_Popul(p(start = 0)); Division Incubation; Division Cure_Rate; Division Activation; Division Perc_Infected; Constants Time_to_Breakdown; Constants Sickness_Duration; Constants Contraction_Rate; Constants Immune_Period; Sum Contagious_Popul; Sum Non_Contagious_Popul; Sum Total_Popul; Sum Temp3; Product1 Contacts_Wk; Product2 Temp1; Product2 Temp2; Minimum Infection_Rate; equation connect(Incubation.in_1,Infected_Popul.out_1); connect(Incubation.in_2,Time_to_Breakdown.out_1); connect(Infected_Popul.in_2,Incubation.out_1); connect(Sick_Popul.in_1,Incubation.out_1); connect(Cure_Rate.in_1,Sick_Popul.out_1); connect(Cure_Rate.in_2,Sickness_Duration.out_1); connect(Immune_Popul.in_1,Cure_Rate.out_1); connect(Sick_Popul.in_2,Cure_Rate.out_1); connect(Activation.in_1,Immune_Popul.out_1); connect(Activation.in_2,Immune_Period.out_1); connect(Immune_Popul.in_1,Activation.out_1); connect(Non_Infected_Popul.in_1,Activation.out_1); connect(Temp2.in_1,Contraction_Rate.out_1); connect(Contagious_Popul.in_1,Infected_Popul.out_1); connect(Contagious_Popul.in_2,Sick_Popul.out_1); connect(Perc_Infected.in_1,Contagious_Popul.out_1); connect(Total_Popul.in_1,Contagious_Popul.out_1); connect(Non_Contagious_Popul.in_1,Non_Infected_Popul.out_1); connect(Non_Contagious_Popul.in_2,Immune_Popul.out_1); connect(Total_Popul.in_2,Non_Contagious_Popul.out_1); connect(Perc_Infected.in_2,Total_Popul.out_1); connect(Temp1.in_1,Perc_Infected.out_1); connect(Contacts_Wk.in_1,Non_Infected_Popul.out_1); connect(Temp1.in_2,Contacts_Wk.out_1); connect(Temp2.in_2,Temp1.out_1); connect(Temp3.in_1,Temp2.out_1); Temp3.in_2 = Introduction; connect(Infection_Rate.in_1,Temp3.out_1); connect(Infection_Rate.in_2,Non_Infected_Popul.out_1); connect(Infected_Popul.in_1,Infection_Rate.out_1); connect(Non_Infected_Popul.in_2,Infection_Rate.out_1); end Influenza;

To export this model to flat Modelica. Execute the following command:

julia flatModelica = OM.generateFlatModelica("Influenza", "./Models/Influenza.mo") print(modelName)

Collaboration & Contact

Please email me at the email located here LiU-page