Dynamic Adaptation and Orchestration of Modelica Simulation

An orchestration workflow for simulating and optimizing self-adaptive systems with MOO4Modelica.

The system dynamically adjusts its operational parameters based on available resources and specific goals, aiming to meet defined objectives.

Components

The orchestration workflow consists of four main components, besides the Modelica model, input data, and the MOO4Modelica optimization framework:

• orchestration_config.json: configuration file for the entire orchestration workflow.
  • It also dynamically adapts the MOO4Modelica config file (config.py).
• orchestrator.py: Coordinates the overall workflow.
  • Initializes components, reads data, runs the optimization, and manages the simulation and evaluation loop.
• orchestration_wrapper.py: Intermediary between MOO4Modelica and the orchestration workflow.
  • Manages the optimization process using MOO4Modelica, handles optimization results, and provides parameter sets for simulation.
• orchestration_configurator.py: Updates configuration based on current status.
  • Prepares and sets parameters for simulation.

Orchestration Workflow (Flowchart)

graph TD
    A[OptiOrch] --> B[Read Input Data]
    B --> C[Adaptive Control Loop: Iteration Over Time Units] --> D1[Orchestrator: Call Configurator and Wrapper]
    D1 --> D2[Configurator: Update Configuration for Optimization]
    D2 --> D[MOO4Modelica: Find the Best Parameter Sets]
    D --> E[Wrapper: Retrieve Optimized Parameter Sets] --> E1[Wrapper: Assign Optimized Parameter Set to the Model]
    E1 --> F[Configurator: Simulate and Evaluate Parameter Sets]
    F --> G{Goal Satisfied?}
    G --> |Yes| H[Goal Satisfied with Current Optimized Parameter Set]
    G --> |No| I[Try Next Optimized Parameter Set]
    I --> J{Any Parameter Sets Left?}
    J --> |Yes| F
    J --> |No| K[Goal Not Satisfied After Trying All Parameter Sets]
    H --> L[Add to Final Report]
    K --> L
    L --> M{All Time Units Iterated?}
    M --> |No| C
    M --> |Yes| N[Final Report]