Special rolling mill controller without PLC (Programmable Logic Controller) architecture and integrated control system

By using a PLC-free dedicated controller for rolling mills and a dynamic phase compensation unit, the timing of rolling force data and material thickness data is aligned in real time, solving the problem of timing misalignment during rolling and improving rolling accuracy and stability.

CN121776253APending Publication Date: 2026-04-03JIAXING JIECHENG MACHINERY
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Patent Information

Application Number
CN202610180873.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-02-09
Publication Date
2026-04-03

AI Technical Summary

Technical Problem

In the existing technology, the difference in the fixed sampling rate between the pressure sensor and the thickness sensor during the rolling process and the accumulation of material plastic deformation cause the physical response timing misalignment between the peak moment of the rolling force data and the valley moment of the material thickness data, which affects the synergistic utilization of the thickness control algorithm and makes it difficult to guarantee the rolling accuracy of the material thickness.

Method used

A dedicated rolling mill controller with a PLC-free architecture obtains the rolling length through a roll rotary encoder, calculates the cumulative amount of plastic deformation in real time using a dynamic phase compensation unit, dynamically adjusts the compensation coefficient, generates compensation data segments using a linear interpolation algorithm, forcibly aligns the timing of the peak rolling force data with the valley material thickness data, and generates precise roll gap adjustment commands.

Benefits of technology

It achieves time-series forced alignment of rolling force data and material thickness data, improves the rolling accuracy of material thickness, ensures the stability and reliability of mill operation, and meets the mill's requirements for high-precision thickness control.

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Abstract

The invention relates to the technical field of rolling mill automatic control, in particular to a special rolling mill controller without a PLC framework and an integrated control system, and aims to solve the problems that in rolling of a rolling mill, the sampling rate difference of pressure and thickness sensors and material plastic deformation accumulation cause the time sequence dislocation of a rolling force peak value and a thickness valley value, the collaborative utilization of data by a thickness control algorithm is influenced, and the cost is reduced. In order to solve the problems that rolling force, thickness data and roller pulse signals are collected through a special controller, and a rolling length observation benchmark is converted; the dynamic phase compensation unit calculates a plastic deformation cumulant, after triggering compensation, a basic phase difference is established based on a sampling rate difference, a compensation coefficient is dynamically increased, a compensation data segment is generated through linear interpolation, and a time sequence is forcibly aligned; and the integrated control unit inputs the alignment data into a thickness control algorithm, the rolling force serves as feedforward, the thickness data serves as feedback, a precise roller gap adjusting instruction is generated, and the material thickness rolling precision is improved.
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