Hi abhijeet.
I understand that you want to check whether values are constant or fluctuating during the first 50 seconds and output a 1 or 0 accordingly.
To achive this follow the below steps:
- Add the 'MATLAB function' block to the Simulink model.
- Implement the code in the 'MATLAB Function' block to determine if values are constant or fluctuating over 50 seconds and output the result. (See the sample code below.)
- Connect the input signal to the 'MATLAB Function' block.
- Add a 'Display' block to the model and connect it to the output of the 'MATLAB Function' block to visualize the result.
Here is sample code for the step 2:
function y = checkFluctuation(u)
persistent valuesArray index
% Initialize persistent variables
if isempty(valuesArray)
valuesArray = -1 * ones(1, 50); % Initialize with -1
index = 1;
end
if index <= 50
valuesArray(index) = u;
index = index + 1;
end
% Check if the array is filled
if index > 50
% Check if all values are 1
if all(valuesArray == 1)
y = 0;
% Check for alternating pattern 101010...
elseif isequal(valuesArray, repmat([1 0], 1, 25))
y = 1;
else
y = -1;
end
else
y = -1;
end
end
Refer the below links for better understanding:
- https://www.mathworks.com/help/matlab/ref/persistent.html
- https://www.mathworks.com/help/simulink/slref/matlabfunction.html
Hope it helps!
