error in evalfis function

Dear MathWorks Team

Hello

Please guide me about the following problem:

By MATLAB fuzzy toolbox, I created a fuzzy system. [ Fis file(compressed with WinRAR) and evalfis function code are attached]:

1. input1 range is -0.5 to 0.5 .

2. Input2 Range is 0 to 1 .

3. The output range is -0.5 to 0.5 .

To extract the points of this fuzzy system, I use evalfis function in my code, according to following commands:

a = readfis('my controller.fis');

    fid = fopen('my controller.txt', 'w');

    for e = -0.5:0.01:0.5

      for y = 0:0.01:1

        Out1 = evalfis([e y], a);

            fprintf(fid,'%f,%f:%f\n',e,y,Out1);

      end

    end

    fclose(fid);

The first time this code is worked correctly. But the next time, following error occurs !!

" In evalfis at 76

Warning: Some input values are outside of the specified input range."

How do I fix this? ّ Please reply as soon as possible.I need this code for my Project!

Best Thanks and Regards

Answer 1

[Walter Roberson]

For Input1, you set the function for the state 'Negative' to be [-0.5 -0.5 0] . When you are using triangular membership, if your second value is equal to the first value or the third value, you get division by 0, which is Not Going To End Well.

[la]

Wow.It is a subtle point! Thanks a lot Mr. Walter Roberson