How can I change the label after using my sim function

Question

Jialu Yao 2023-10-15

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2033939-how-can-i-change-the-label-after-using-my-sim-function

评论： Jialu Yao 2023-10-16

采纳的回答： Walter Roberson

在 MATLAB Online 中打开

A = [0.9607, 0.0196, 0.1776; -0.0098, 0.9999, -0.0009; 0, 0, 0.8187];

B = [0.0185, 0.1974; -0.0001, 0.1390; 0.1813, 0];

C = [1, 0, 0; 0, 1, 0; 0, 0, 1];

Ts = 0.2;

sys = ss(A, B, C, 0, Ts);

% States : HP = Head Perturbation; SP = Stock-level Perturbation; AP = Air

% Valve Perturbation

% Controls: AV = Air Valve; SV = Stock Valve

model = setmpcsignals(sys,'MV',[1,2],'MO',[1,2,3]);

% controller object, sampling period, prediction hor., control hor.

mpcobj = mpc(model, Ts, 10, 10);

-->"Weights.ManipulatedVariables" is empty. Assuming default 0.00000. -->"Weights.ManipulatedVariablesRate" is empty. Assuming default 0.10000. -->"Weights.OutputVariables" is empty. Assuming default 1.00000. for output(s) y1 y2 and zero weight for output(s) y3

% Input constraints

mpcobj.MV(1,1).Min = -5;

mpcobj.MV(1,1).Max = 5;

mpcobj.MV(1,2).Min = -10;

mpcobj.MV(1,2).Max = 10;

% Output Constraints

mpcobj.OV(1,1).Min = 0;

mpcobj.OV(1,1).Max = 50;

mpcobj.OV(1,2).Min = 0;

mpcobj.OV(1,2).Max = 25;

Tstop = 30; % simulation time

Tf = round(Tstop/Ts); % number of simulation steps

r = 10*ones(Tf,3); % reference signal

sim(mpcobj,Tf,r)

-->Assuming output disturbance added to measured output #1 is integrated white noise. -->Assuming output disturbance added to measured output #2 is integrated white noise. -->Assuming output disturbance added to measured output #3 is integrated white noise. -->"Model.Noise" is empty. Assuming white noise on each measured output.

This is my matlab code for MPC. After I use the sim function there are two graphs and I would like to change the label of them. If I use title, I can only change one of them. is there a way that I can directly change the titles without using several plot functions and regenerate my graphs?

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Answer 1

Walter Roberson 2023-10-15

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2033939-how-can-i-change-the-label-after-using-my-sim-function#answer_1333724

移动：Walter Roberson 2023-10-15

在 MATLAB Online 中打开

A = [0.9607, 0.0196, 0.1776; -0.0098, 0.9999, -0.0009; 0, 0, 0.8187];

B = [0.0185, 0.1974; -0.0001, 0.1390; 0.1813, 0];

C = [1, 0, 0; 0, 1, 0; 0, 0, 1];

Ts = 0.2;

sys = ss(A, B, C, 0, Ts);

% States : HP = Head Perturbation; SP = Stock-level Perturbation; AP = Air

% Valve Perturbation

% Controls: AV = Air Valve; SV = Stock Valve

model = setmpcsignals(sys,'MV',[1,2],'MO',[1,2,3]);

% controller object, sampling period, prediction hor., control hor.

mpcobj = mpc(model, Ts, 10, 10);

-->"Weights.ManipulatedVariables" is empty. Assuming default 0.00000. -->"Weights.ManipulatedVariablesRate" is empty. Assuming default 0.10000. -->"Weights.OutputVariables" is empty. Assuming default 1.00000. for output(s) y1 y2 and zero weight for output(s) y3

% Input constraints

mpcobj.MV(1,1).Min = -5;

mpcobj.MV(1,1).Max = 5;

mpcobj.MV(1,2).Min = -10;

mpcobj.MV(1,2).Max = 10;

% Output Constraints

mpcobj.OV(1,1).Min = 0;

mpcobj.OV(1,1).Max = 50;

mpcobj.OV(1,2).Min = 0;

mpcobj.OV(1,2).Max = 25;

Tstop = 30; % simulation time

Tf = round(Tstop/Ts); % number of simulation steps

r = 10*ones(Tf,3); % reference signal

sim(mpcobj,Tf,r)

-->Assuming output disturbance added to measured output #1 is integrated white noise. -->Assuming output disturbance added to measured output #2 is integrated white noise. -->Assuming output disturbance added to measured output #3 is integrated white noise. -->"Model.Noise" is empty. Assuming white noise on each measured output.

figs = get(0,'Children');

T = findall(figs, 'string', 'Plant Outputs')

T =

Text (Plant Outputs) with properties: String: 'Plant Outputs' FontSize: 11 FontWeight: 'bold' FontName: 'Helvetica' Color: [0 0 0] HorizontalAlignment: 'center' Position: [277.5003 356.7500 -0.8087] Units: 'pixels' Use GET to show all properties

Tax = T.Parent

Tax =

Axes (Plant Outputs) with properties: XLim: [0 1] YLim: [0 1] XScale: 'linear' YScale: 'linear' GridLineStyle: '-' Position: [0.0665 0.0830 0.9575 0.8154] Units: 'normalized' Use GET to show all properties

Tax.Tag

ans = 0×0 empty char array

Tax.Title

ans =

Text (Plant Outputs) with properties: String: 'Plant Outputs' FontSize: 11 FontWeight: 'bold' FontName: 'Helvetica' Color: [0 0 0] HorizontalAlignment: 'center' Position: [277.5003 356.7500 -0.8087] Units: 'pixels' Use GET to show all properties

Tax.HandleVisibility

ans = 'off'

In summary, the name Plant Outputs is a Title within a hidden axes. You can findall() it and then change its String property.