I want to adapt Fuzzy Logic Toolbox to be able to use the output of one system as the input of another

Question

Gerard Gonzalez 2018-1-29

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回答： Chad MacDonald 2022-3-22

Hello,

Currently I can build a Fuzzy Inference System where, for example, I can put 2 inputs and get 1 output.

On the other hand, I could have another Fuzzy Inference System with 3 inputs and 2 outputs.

I would like to be able to take those 3 outputs, use them as input for a new Fuzzy Inference System (with other new rules) and obtain a new output corresponding to those 3 new entries.

I honestly do not know how to do something like that, could you help me or guide me please?

Thank you so much.

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Answer 1

Anh Tran 2018-2-5

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The current version of Fuzzy Logic Toolbox does not support internal looping of input and output variables. The simplest solution is to create multiple fuzzy inference systems (FISs) in a cascaded form in Simulink or MATLAB. Then you just have to feed outputs from the first layer of FIS as inputs to the next layer.

Alternatively, you can also create a feedback loop from FIS (feed outputs as inputs to FIS). This, however, will produce unit cycle delay in specific output values.