A problem in writing a code

Question

Hamed P. Azad 2011-12-9

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/23510-a-problem-in-writing-a-code

I have a problem in a code.

y_d = zeros (N,1)
for cont = 1:N
      y_d (cont,1) = u (cont);
end
u_minus = zeros (N,1);
Output = zeros (N,1);
  for count = 1:N
      Output (count,1) = y_sin_real (count);
  end
for c = 0:N
  mat2 = y_d - ((h_minus * u_minus) - (Output - y_d));
  u_plus = mat1\(h_plus_t * Q)* mat2;
  Output = (h_plus * u_plus) + (h_minus * u_minus);
  u_minus = [u_minus ; u_plus(1)];
  u_minus = u_minus (2 : N+1);
  error = abs(y_d) - abs(Output);
end

as you can see, i first give an initial state to Output to use in calculation, but in the loop, i'm changing it's value N times. but it's not workin and in the end of the loop i still have the initial numbers for Output.

what is the problem???

thanks.

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Dr. Seis 2011-12-9

You should also show how the other variables (i.e., the one in your third "for" loop) are created above. Or at least tell us their dimensions.

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Answer 1

Hamed P. Azad 2011-12-9

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/23510-a-problem-in-writing-a-code#answer_30865

yes, the problem is in the 3rd for loop, but the variables are set correctly, and the code runs fine; except for the "Output" that stays the way it was initiated.

the code is long and the variables are set in different loops.