Pipe production line fault diagnosis method based on digital twinning

By constructing a discrete physical state library and processing sensor data using a local sensitive hash projection matrix, and generating mapping feature codes, real-time fault diagnosis and phase correction of the pipe production line are achieved. This solves the responsiveness and accuracy problems of the pipe production line in high-noise environments and realizes microsecond-level control synchronization.

CN122308071APending Publication Date: 2026-06-30SUZHOU BAIQIDUN PLASTIC MACHINERY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SUZHOU BAIQIDUN PLASTIC MACHINERY CO LTD
Filing Date
2026-03-17
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing technologies struggle to achieve real-time fault diagnosis in pipe production lines under high-noise environments, resulting in insufficient responsiveness and precision of the control system, which fails to meet the requirements of continuous high-precision extrusion.

Method used

A discrete physical state library is constructed. Sensing data is processed through multidimensional projection basis vectors and local sensitive hash projection matrices to generate mapping feature codes. Real-time fixed-length vector retrieval and pointer addressing of feature vectors are realized. Phase deviation correction is performed by combining the control feedforward compensation matrix.

Benefits of technology

Real-time mapping of physical states is achieved within microsecond-level control cycles, eliminating phase deviations caused by analytical calculation delays, improving the responsiveness and accuracy of the control system, and ensuring stability and adaptive correction capabilities in high-noise environments.

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Abstract

This invention relates to the field of industrial control system technology and discloses a fault diagnosis method for pipe production lines based on digital twins. The method includes: providing a discrete physical state library, wherein each address mapping node maps to a feature parameter vector and a control feedforward compensation matrix; generating multi-dimensional projection basis vectors based on random number seeds and fixing them into a mapping projection matrix; mapping the feature parameter vectors to projection sequences and generating mapping feature codes using a positive / negative sign quantization criterion; reconstructing the index topology of the discrete physical state library based on the mapping feature codes; acquiring real-time feedback noise sensing signals and generating real-time mapping feature codes; matching and addressing address mapping nodes in the addressing memory interval and retrieving the corresponding matrix; and implementing control command phase deviation correction. This invention improves the physical tolerance determinism of discrete digital model addressing and eliminates control command phase lag caused by analytical calculation delays.
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