Look-Ahead / Previewing feature for Nonlinear Model Predictive Control

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Alex Ander 2022-1-25

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https://ww2.mathworks.cn/matlabcentral/answers/1635595-look-ahead-previewing-feature-for-nonlinear-model-predictive-control

编辑： Alex Ander 2022-2-4

I would like to use an NMPC approach to control a nonlinear MIMO problem. In the real problem I have a very reliable prediction about the reference signal and I would like to use this knowledge in the form of a look-ahead approach.

In the NMPC example below, at the bottom of the page it says "This could be improved by providing the controller MPC with a look-ahead reference signal, which informs the controller of the expected reference variation over the prediction horizon."

https://de.mathworks.com/help/mpc/ug/nonlinear-model-predictive-control-of-exothermic-chemical-reactor.html

In the linear MPC's I found the corresponding feature under the "Improving Control Performance with Look-Ahead (Previewing)". Is there a similar feature for the nonlinear MPC?

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Answer 1

Alex Ander 2022-2-4

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1635595-look-ahead-previewing-feature-for-nonlinear-model-predictive-control#answer_888935

编辑：Alex Ander 2022-2-4

it is sufficient to specify a reference vector, Matlab then solves the optimization correctly with a preview behavior. At the beginning, I had always given only the current reference value and this is then apparently held constant over the complete prediction horizon.