How to combine two fuzzy inference system in Simulink?

Two fuzzy inference system(FIS) has different input features where both FIS have same output classes.

I need to combine both FIS and get single output. Which block i need to use in the library browser (Simulink) to combine them to get single output.

As i need to form more rule so i done two sets of fuzzy inference system to reduce the rules.

Please help me how to combine them in simulink to get single output.

Answer 1

[Sam Chak]

Hi @Swathi T

I don't know how your Rules and FIS work, but you can try combining both FIS blocks in the additive way:

Also, note that the FIS supports MIMO system. In other words, it is possible to design one single FIS as such

and then the final output is

[Swathi T]

Thank you @Sam Chak

[Sam Chak]

You are welcome @Swathi T.

[Layla Mohammad]

Actually , this does not work

Any idea how to do that

Noting that i have already modeled two mamdani fis using fuzzy logic designer

[Sam Chak]

Hi @Layla Mohammad

Thanks for your feedback. Since this doesn't work for you, please open a new question, and then describe your fuzzy problem if you want to build the connected fuzzy inference systems, something similar to what is shown below.

A sketch is preferable for clarity because the FIS can be connected in various configurations.

Do you want to connect the two Mamdani FIS in MATLAB or Simulink?

plotfis(Tree)

[Layla Mohammad]

@Sam Chak

Here is my question

https://www.mathworks.com/matlabcentral/answers/2003297-error-with-fuzzy-tree-model?s_tid=prof_contriblnk

thanks for your reply