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Feedback control during time-dependent simulation
Posted Apr 8, 2020, 6:12 a.m. EDT Modeling Tools & Definitions, Parameters, Variables, & Functions, Studies & Solvers 1 Reply
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Hello, I would be curious to hear if it is possible to somehow implement feedback in Comsol, particularly in time-dependent/transient pressure acoustics simulations. What that concretely means: I would like to use the value of the dependent variable (pressure) at x0 at the current timestep of the simulation as the input of a point source in a different location x1. Is this possible to do within Comsol? Currently, my only idea would be to somehow run the simulation for one time-step t_n, extract P(x0,t_n) to use it as input at x1, and then restart the simulation with the result of the time-step t_n as the initial condition of the current time-step t_n+1. I have not tried this, but it sounds awefully complicated and computationally slow. Are there other ways to implement such feedback?
Thanks a lot,
Theo
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Hi Theo, you may want to get started here: https://www.comsol.ch/blogs/optimizing-pid-controller-performance-with-comsol-multiphysics Best regards Sven