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Running two control systems with different rates

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Christos Patrinos
Christos Patrinos on 4 Jun 2020
I have a relatively general question. I have two control systems that communicate with each other (one feedforward controller and one MPC) and I am trying to make one of these systems faster than the other one in terms of sampling rates. For example, I want the feedforward controller to be slower than the MPC.
Is there a Simulink block that can help me implement this?
Thank you
Christos Patrinos
Christos Patrinos on 5 Jun 2020
My issue is that when I am trying to change the MPC sampling rate to make it faster (ie smaller sampling rate) it doesn't allow me because it is not dependent (integer product) of the Simulink settings fixed solver sampling time.

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