Clear Filters
Clear Filters

Running main model with fixed step solver and subsystem with variable step solver

5 views (last 30 days)
My aim is to integrate a Simulink protected model which runs on variable step solver with our vehicle plant model which runs on Fixed step solver ode1 with a time step of 1ms. I would like to know if it is possible to do the same. Any ideas would be appreciated.

Answers (2)

Torsten
Torsten on 28 Apr 2024
Moved: Torsten on 28 Apr 2024
Given: Results for both models at time t.
  1. Call the variable step solver for a time period of 1 ms (maybe using the inputs of the fixed step solver at time t).
  2. Call the fixed step solver for a time period of 1 ms (maybe using the inputs of the variable step solver at time t).
  3. Set t = t + 1ms.
  4. Goto 1.
  1 Comment
Paul
Paul on 28 Apr 2024
Edited: Paul on 29 Apr 2024
My initial reaction to this answer was "that's not how Simulink works, at least not easily." But, with R2024a Simulink implemented a new feature called Simulation Objects that may make this approach workable, especially if the protected model and the vehicle plant model only interact with each other at well-defined times. I haven't yet tried Simulation Objects. See this blog post and the doc page(s) linked from there for more information.

Sign in to comment.


Paul
Paul on 28 Apr 2024
R2022a introduced the concept of a "Local Solver" when using referenced models, which might be what you're looking for. This blog post, and the comments, along with the current, relevant doc pages might be of interest.

Categories

Find more on Modeling in Help Center and File Exchange

Products


Release

R2022b

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!