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How to generate 2-D Lookup Table data for the Fuzzy PID Controller
Hi @Zoran For simplicity, you can create three individual 2-D lookup tables for the three fuzzy outputs generated from a single...

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How to resolve the error: Undefined function or variable 'gensurfOptions'
The gensurfOptions() function was introduced in R2017a, and your problem was posted in May 2017. Since the R2017a release, it is...

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How to customize output membership functions for Sugeno fuzzy systems in Fuzzy Logic Designer
If the mathematical notation in the output equation "u1 = x2(sigma + ro)" indicates implied multiplication (or multiplication by...

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How to resolve the error using evalfis: 'Input data must have as many columns as input variables'
If the number of columns in the input data (N) differs from the number of input variables in the fuzzy system (NfisIn), such err...

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How to send the output of a fuzzy system to a function
Here is an example of how you can send the output of a fuzzy system to a function: %% load a fuzzy system fis = readfis("tippe...

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How to identify the parameters of each membership function in a fuzzy logic system
Hi @Sebti Rihab You can identify the parameters of each membership function (MF) in a designed fuzzy system using this simple s...

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How to fix errors when evaluating a Fuzzy System using custom membership functions
Hi @Oleksandr Rynas Designing custom membership functions can be enjoyable and provide a sense of satisfaction to fuzzy logic a...

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Should the number of fuzzy rules in ANFIS be equal to the number of input MFs?
Yes, if the Subtractive Clustering method is used to generate the initial fuzzy system in ANFIS. %% The McDonald's Logo x = ...

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How to design a Fuzzy System for only five data points
Hi @M Ali Naqvi Here is a demonstration of employing the Stone–Weierstrass theorem (instead of Taylor series) to design a relat...

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the average state space model system using the Euler method
Hi @fatih In the simulation of the transfer function Gvd, you forgot to multiply the transfer function with the Duty Cycle 'D'....

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How to input a NaN (as a nonexistent input variable) when evaluating a fuzzy system using evalfis
Hi @NaN I am revisiting the problem after more than a year and believe that two fuzzy systems (fis11 and fis12) should be creat...

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How to define the output of Fuzzy Controller as a change in the duty cycle for DC DC converter
Since the Simulink model is not provided to investigate why the fuzzy controller continues to produce a constant output value wh...

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How to adjust the parameters of membership function after the ANFIS is trained
Hi @sarara If the ANFIS model has been successfully trained and the performance is satisfactory, except for the aesthetic aspec...

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How to extrapolate the fuzzy system output to values beyond the universe of discourse
You can attempt to extrapolate the fuzzy system output to values beyond the universe of discourse by extending the existing rang...

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Does anyone know how to use an IF statement with ODE's? I am trying to create an IF statement sigma > 0 , tau > 0 if dx(3,1) > 0, dx(1,1) > 0 and sigma = 0 , tau = 0 otherwise
Hi @Christopher I simulated 5 cases below, including the interpretations of @Torsten and @William Rose, while keeping the setti...

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Why does the ANFIS output range vary significantly despite perfect training accuracy?
Hi @Vandna To explain this phenomenon, consider the following example of a training data set with two inputs and one output. Ex...

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How to assess Rule Impact on Output MF Coverage and Prediction Accuracy in Fuzzy Systems
Hi @Saleh The R2024b new plotrule() function allows the user to see the firing strength and influence of each rule over the cov...

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How to create Fuzzy Cognitive Map from the Adjacency Matrix
Hi @Alagesan At the time your question was posted, it was challenging for @Arkadiy Turevskiy and others to assist you because t...

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How to create Fuzzy Membership Functions from data using fcm()
Hi @Pat The road traffic data in Table 1 are, in fact, incomplete. From our perspective, we cannot use the incomplete data to p...

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How to activate the 'Structure' button that appears inactive in Neuro-Fuzzy Designer
Hi @mekia The 'Structure' button appears to be greyed out initially after the data is loaded into the Neuro-Fuzzy Designer, ind...

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How to obtain the fuzzy input membership grades for all MFs given an input value
Hi @mhilmi Other than the evalfis() function, the evalmf() function can be used to obtain the membership function values. %% i...

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How to train membership functions and rules of the Mamdani FIS
Hi @chaks At the time your question was posted, there was no built-in function in the Fuzzy Logic Toolbox to tune the Mamdani F...

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How to create multiple Fuzzy Inference Systems (FIS) simultaneously without using a for-loop
Here is the for-loop approach to create multiple FIS models. inputData = [rand(10, 1), 10*rand(10, 1)-5]; outputData = ran...

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How to create multiple Fuzzy Inference Systems (FIS) simultaneously without using a for-loop
Hi @Spurthi You can create multiple FIS models simultaneously without using a for-loop by leveraging MATLAB's capability to han...

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Fuzzy Ruleviewer
Unlike the ruleview(fis) command, which generates a UI-based image, the new function plotrule(fis), introduced in the R2024b rel...

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How to use the Height Defuzzification method in Fuzzy Logic Toolbox
Hi @santhi krishna The height defuzzification method is indeed available in the Fuzzy Logic Toolbox and is associated with the ...

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How to perform 5-Fold Cross-Validation in MATLAB
Some of cross-validation techniques are available in the Classification Learner App and the Regression Learner App, as well as u...

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How to determine the number and range of Fuzzy Membership Functions
Hi @azarm In function approximation, it is true that the more uniformly spaced the distribution-type MFs are, the more details ...

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Warning: MATLAB may run out of memory if this FIS is tuned using ANFIS
Hi @Mhmmd Sjj and @Yundi Huang If you use the "Grid Partitioning" method for the nine inputs in ANFIS training, MATLAB may run ...

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The settling time in matlab differs from the calculated value
Hi @fatih From the following computations and the step response plot, you may gain insight into how the actual settling time is...

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