Removing repeat displays in Matlab

Question

James 2015-4-2

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/195806-removing-repeat-displays-in-matlab

编辑： A Jenkins 2015-4-2

I am modelling a landing gear system and would like to be notified in the Matlab command space when it has been deployed

To do this I have a matlab function block in simulink with the following code:

--------------------------------------------

function y = fcn(u)

if u >= 0.5

disp('Nose LG Door 2 Deployed')

end

y = u;

-----------------------------------------

However I only want the display of Nose LG Door 2 Deployed to come up once in the command window, except currently it is constantly repeating until the simulation ends.

Does anyone know how to make it only appear once?

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Answer 1

A Jenkins 2015-4-2

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/195806-removing-repeat-displays-in-matlab#answer_173737

编辑：A Jenkins 2015-4-2

在 MATLAB Online 中打开

 function y = fcn(u)
 persistent previous_u
 if isempty(previous_u)
    previous_u=0;
 end
 if u >= 0.5 && previous_u < 0.5
 disp('Nose LG Door 2 Deployed')
 end
 previous_u=u;
 y = u;