Adaptive MPC: Dimension Error of Block Input

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Peter Reithuber 2018-10-31

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https://ww2.mathworks.cn/matlabcentral/answers/427070-adaptive-mpc-dimension-error-of-block-input

评论： Amr Elsherbiny 2023-7-13

I have a problem with the use of adaptive mpc block in matlab. The input dimensions of DX to the adaptive mpc block seem to be wrong and the errors (as can be seen in the picture) occur. The simulation uses a simple 2dof kinematic single track vehicle model; state matrices: A[0 vx; 0 0], B[1 0; 0 1], C[1 0; 0 1], D[0 0; 0 0]; mv=2; mo=2; It works using the standard MPC controller, but I have a problem using it for the Adaptive MPC Block. How can I solve this problem?

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Jakobus Louw 2020-4-9

I have exactly the same problem. Did any of you find the solution? Please make a public post if you have.

Seyyed Ali Ghorashi Khalil Abadi 2020-8-21

I have also the same issue, Is there anyone who know what shoud I do?

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回答（1 个）

Jakobus Louw 2020-4-9

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https://ww2.mathworks.cn/matlabcentral/answers/427070-adaptive-mpc-dimension-error-of-block-input#answer_425020

It is a bug in the Adaptive MPC block where it checks for the correct dimentions of the input ports. For some reason it does not accept a vector signal, but checks for a matrix signal.

I added Signal Specification blocks to all the "MPC Matrix Signal Check <>" subsystems to explicitly state the dimentions.

I found this subsystem by following the link in the Diagnostics Panel, and disabling the link so that I could edit the block locally (not the library block).