Method for controlling unwinding tension of coating machine

Through the aurora optimization algorithm and obstacle function, a non-singular sliding mode surface function was constructed, and an adaptive controller was designed, which solved the high-precision control problem of the coater unwinding tension control system under complex dynamic changes, achieved rapid response and steady-state error elimination, and improved the robustness and accuracy of the control system.

CN120370701APending Publication Date: 2025-07-25BEIJING INSTITUTE OF GRAPHIC COMMUNICATION
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Patent Information

Application Number
CN202510508391.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-04-22
Publication Date
2025-07-25

AI Technical Summary

Technical Problem

The existing coating machine unwinding tension control method is difficult to achieve high-precision and fast response control when the materials and thickness of different coils are changed. PID control and fuzzy control have limited adaptability when complex systems change dynamically, and cannot meet the needs of high-precision control.

Method used

The non-singular sliding mode surface function is constructed using aurora optimization algorithm and obstacle function, and an adaptive controller is designed. The system converges in a limited time through the state space equation and the Liyapunov function. Combined with the adaptive control rate, the system's anti-interference ability is improved, and the total control signal is output for unwinding tension control.

Benefits of technology

High-precision control of the unwinding tension control system is realized, dynamic response speed and finite time convergence are enhanced, steady-state error is eliminated, singular phenomena are avoided, and the robustness and accuracy of the control system are improved.

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Abstract

The invention discloses a coating machine unwinding tension control method which is characterized by comprising the steps that S1, parameters, operation data and tension data of a coating machine are collected, and a state-space equation of an unwinding tension control system is established; s2, constructing an obstacle function; s3, combining the obstacle function and constructing a non-singular sliding mode surface function; s4, solving an equivalent controller for controlling tension according to the non-singular sliding mode surface function; s5, optimizing key parameters of the equivalent controller by using an aurora optimization algorithm; s6, designing a self-adaptive control rate for improving the anti-interference capability of the unwinding tension control system; the adaptive control rate is combined with the equivalent controller, and a total control signal is output; s7, performing unwinding tension control on an unwinding tension control system according to the master control signal; according to the scheme, the speed of dynamic response can be adjusted, finite time convergence is enhanced, steady-state errors are eliminated, singularity is avoided, convergence is accelerated, and therefore high-precision control over an unwinding tension control system is achieved.
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