Remaining Usefull Time - Predict RUL not working on ThingSpeak

Question

Aniket Manjare 2021-4-18

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/805281-remaining-usefull-time-predict-rul-not-working-on-thingspeak

编辑： ricardo arias 2021-9-30

在 MATLAB Online 中打开

I can succesfulkly run the code on Matlab but ,it shows error while running on ThingSpeak.

I really dont understan whats wrong, can you help me

error i am getting on Thingspeak Matlab Analysis

Warning: While loading an object of class 'linearDegradationModel':
Unrecognized field name "AlphaLevel". 
> In MATLABAnalysis>getValues (line 50)
In MATLABAnalysis (line 34) 
Error using rulModel/predictRUL (line 269)
Operands to the logical and (&&) and or (||) operators must be convertible to logical scalar values.
Error in MATLABAnalysis>getValues (line 62)
            [estTTS, CITTS, pdfTTS] = predictRUL(T.mdl{failureMode},[-NaN healthIndicator],threshold);
Error in MATLABAnalysis (line 34)
[estTTS,healthIndicator,threshold,EmailAlertFlag] = getValues(features, out,dropBoxAccessToken, IFTTTURL, secondChID,thresholdTTS,labels,secondReadAPIKey) %Get the others values to be written on
second channel
 

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Aniket Manjare 2021-4-21

在 MATLAB Online 中打开

Sure,

Well My project is Condition based predictive Maintenece of Motor by Vibration signal Analysis tecniques. our aim is to real time fault identification and predict the threshold before that need to be taken action by maintenece team.

function [estTTS,healthIndicator,threshold,EmailAlertFlag] = getValues(features, out,dropBoxAccessToken, IFTTTURL, secondChID,thresholdTTS,labels,readKey)
    if(out == 0 || out == 1) %Don't need Predictive Maintenance during normal operation
        estTTS = NaN; 
        healthIndicator = NaN;
        threshold = NaN;       
    else 
        rawdata = downloadFromDropbox(dropBoxAccessToken,'Fan TTS Model.mat');
        f = fopen('Fan TTS Model.mat','w');
        fwrite(f,rawdata);
        fclose(f);
        T = load('Fan TTS Model.mat');
        failureMode = out - 1 ;%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%1 to 0 then dutct block work
        if(out ==2)
            failureMode = 2;
        else
             failureMode = out - 1;
        end
        
        if(length(T.selectedFeatures{failureMode})==1)
            healthIndicator =  table2array(features(:,T.selectedFeatures{failureMode}));
            threshold = T.threshold{failureMode};
            [estTTS, CITTS, pdfTTS] = predictRUL(T.mdl{failureMode},[-NaN healthIndicator],threshold); 
            estTTS = estTTS*T.conversion{failureMode}; 
            CITTS = CITTS*T.conversion{failureMode};
            pdfTTS.TTS = pdfTTS.RUL*T.conversion{failureMode};
        else
            selectedFeatures = features(:,T.selectedFeatures{failureMode});
            healthIndicator = (selectedFeatures{:,:} - T.meanTrain{failureMode}) ./ T.sdTrain{failureMode} * T.pcaCoeff{failureMode}(:, 1);
            threshold = T.threshold{failureMode};
            [estTTS, CITTS, pdfTTS] = predictRUL(T.mdl{failureMode},[-NaN healthIndicator],threshold); 
            estTTS = estTTS*T.conversion{failureMode};
            CITTS = CITTS*T.conversion{failureMode};
            pdfTTS.TTS = pdfTTS.RUL*T.conversion{failureMode};
        end
    end
    
end

ricardo arias 2021-9-30

编辑：ricardo arias 2021-9-30

Hello, @Aniket Manjare:

Can I use your code to predict the RUL with a file like this:

https://drive.google.com/file/d/1F3qs6J2PFpBBlB8b1cBjoTOpGPBgxV7D/view?usp=sharing

Only for VelB2 (Velocity in Bearing 2, in in/s). Threshold 0.351 in/s.

Could you help me with this??

Thanks

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Remaining Usefull Time - Predict RUL not working on ThingSpeak

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