Yarn Unwinding Timing Correction for Supply Package Depletion
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Solution Overview
Problem
Existing yarn processing facilities struggle to accurately estimate the timing of yarn unwinding from supply packages, leading to potential interruptions and decreased productivity due to factors like yarn breakage and variations in unwinding parameters.
Innovation Solution
A yarn processing facility with an information management unit that utilizes detection units to acquire actual unwinding time information, corrects for stopping times and system values, and calculates correction coefficients to estimate the end of unwinding accurately.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If yarn unwinding timing is estimated without correction, then the estimation process is simple, but the estimation accuracy is low due to yarn breakage and parameter variations
Solution Approach 1:
The system implements feedback by detecting actual unwinding end timing and using it to calculate correction coefficients that are applied to future estimations. The detection unit provides feedback on actual unwinding behavior, which is processed by the information management unit to refine timing predictions for subsequent yarn packages.
Solution Approach 2:
The system performs self-correction by automatically calculating correction coefficients from detected unwinding data and applying these corrections to future estimations without external intervention. The information management unit self-adjusts the estimation algorithm based on actual operational data.
2Measurement precision
If actual unwinding time is measured for every package, then estimation accuracy improves, but the time and resources required for measurement increase
Solution Approach 1:
The system applies correction coefficients derived from actual measurements to multiple future estimations without re-measuring each package. By performing the detection action once and extrapolating the correction to subsequent packages, the system achieves high accuracy while minimizing repeated measurement time.
Solution Approach 2:
The system performs preliminary detection on the first yarn package to establish correction coefficients before processing subsequent packages. This preliminary action captures the actual unwinding characteristics that will be used to guide all future timing estimations.
3Measurement precision
If correction coefficients are calculated and applied, then estimation accuracy improves, but the calculation and processing time increase
Solution Approach 1:
The system changes the estimation parameter from raw theoretical values to corrected values that incorporate actual operational data. By adjusting the timing parameter based on detected unwinding behavior and calculated correction coefficients, the system achieves higher precision while maintaining processing efficiency.
Data Source
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AI summary
An object of the present invention is to accurately estimate a timing of the end of unwinding of a yarn from a yarn supply package. An information management unit 110 of a yarn processing facility 100 is configured to acquire actual all unwinding time information regarding actual all unwinding time by using a detection result of a yarn detection sensor 24, and the actual all unwinding time is actual time from the start to end of unwinding of a yarn Y from a predetermined yarn supply package Ps1 among yarn supply packages Ps. The information management unit 110 is configured to acquire corrected estimation information by using the actual all unwinding time information, and the corrected estimation information is usable for estimating a timing of the end of unwinding of a yarn Y from a yarn supply package Ps from which the yarn Y is to be unwound after the yarn supply package Ps1.