System and method for paper web time-to-break prediction
First Claim
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1. A system for predicting a paper web break in paper machine located about a paper mill, comprising:
- a paper mill database containing a plurality of measurements obtained from the paper mill, each of the plurality of measurements relating to a predetermined paper machine variable;
a processor for processing each of the plurality of measurements into modified break sensitivity data; and
a break predictor responsive to the processor for predicting a time-to-break of the paper web from the plurality of processed measurements.
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Abstract
System and method for generating a time-to-break prediction for a paper web in a paper machine. This invention uses principal components analysis, neuro-fuzzy systems and trending analysis to form a model for predicting the time-to-break of the paper web from paper mill measurements of paper machine process variables. The model is used to isolate the root cause of the predicted web break.
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Citations
52 Claims
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1. A system for predicting a paper web break in paper machine located about a paper mill, comprising:
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a paper mill database containing a plurality of measurements obtained from the paper mill, each of the plurality of measurements relating to a predetermined paper machine variable;
a processor for processing each of the plurality of measurements into modified break sensitivity data; and
a break predictor responsive to the processor for predicting a time-to-break of the paper web from the plurality of processed measurements. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A system for predicting a paper web break in a paper machine located about a paper mill, comprising:
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a paper mill database containing a plurality of measurements from the paper mill, each of the plurality of measurements relating to a predetermined paper machine variable;
a processor for processing each of the plurality of measurements into modified break sensitivity data comprising time-based transformations of the plurality of data; and
a break predictor responsive to the processor for predicting a time-to-break of the paper web from the plurality of processed measurements, wherein the break predictor comprises a predictive model. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A method for predicting a paper web break in a paper machine located about a paper mill, comprising:
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obtaining a plurality of measurements from the paper mill, each of the plurality of measurements relating to a predetermined paper machine variable;
processing each of the plurality of measurements into modified break sensitivity data; and
predicting a time-to-break for the paper web within the paper machine from the plurality of processed measurements. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41)
reducing the quantity of the historical web break data;
reducing the number of variables contained in the historical web break data;
transforming the values of the historical web break data;
enhancing features that affect web break sensitivity from the historical web break data; and
generating the adaptive network-based fuzzy inference system to predict the time-to-break.
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35. The method according to claim 27, wherein the processing of the plurality of measurements into modified break sensitivity data further comprises time-based transformations of the plurality of measurements.
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36. The method according to claim 27, wherein the processing of the plurality of measurements into modified break sensitivity data further comprises transforming the plurality of measurements into principal components for web breakage.
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37. The method according to claim 27, further comprising processing the predicted time-to-break and prior predicted times-to-break into a final predicted time-to-break.
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38. The method according to claim 27, further comprising adjusting the predicting of the time-to-break based on an analysis of the performance of the predicted time-to-break.
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39. The method according to claim 27, further comprising updating the status of the paper machine by indicating the predicted time-to-break.
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40. The method according to claim 27, further comprising isolating the paper machine variables affecting the predicted time-to-break.
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41. The method according to claim 27, wherein the obtaining of the plurality of measurements comprises receiving measurements generated from various processes occurring within the paper mill.
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42. A method for predicting a paper web break in a paper machine located about a paper mill, comprising:
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obtaining a plurality of measurements from the paper mill, each of the plurality of measurements relating to a predetermined paper machine variable;
performing a time-based transformation of each of the plurality of measurements to produce modified break sensitivity data; and
predicting a time-to-break for the paper web within the paper machine from the plurality of processed measurements by applying a predictive model. - View Dependent Claims (43, 44, 45, 46, 47, 48, 49, 50, 51, 52)
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Specification