Data structure for system identification toolbox for multiple input multiple output data

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Steffen B. 2025-2-14

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https://ww2.mathworks.cn/matlabcentral/answers/2174045-data-structure-for-system-identification-toolbox-for-multiple-input-multiple-output-data

评论： Mathieu NOE 2025-2-17

MiMO.xlsx

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Hello,

I'm trying to analyze data in the system identification toolbox.

The imput variables are time, pressure, angle and distance and the outputs are temperature values from T1 to T6, like in the attached data sheet.

I'm struggeling to get the data into the toolbox.

Can I load the whole data set into the toolbox?

This is what I tryied so far:

clc, close all, clear all
data = xlsread('MiMO.xlsx');
save MiMO.mat data;
load MiMO.mat
time=data(:,1);
pressure=data(:,2);
angle=data(:,3);
distance=data(:,4);
T1=data(:,5);
T2=data(:,6);
T3=data(:,7);
T4=data(:,8);
T5=data(:,9);
ST=1; % Sampling time in seconds
MiMO_Data=iddata(['time';'pressure';'angle','distance'],['T1','T2','T3','T4','T5'],ST);
Error using vertcat
Dimensions of arrays being concatenated are not consistent.
MiMO_Data.ImputName={'time';'pressure';'angle','distance'};
MiMO_Data.OutputName={'T1','T2','T3','T4','T5'};
systemIdentification;