基于改进LADRC的放卷侧储料架张力系统建模与控制

Modeling and tension control based on an improved LADRC for the unwind side accumulator in roll-to-roll equipment

关键词:  纸张涂布制造  卷对卷  储料架  改进LADRC  张力控制

Key Words:Paper Coated Manufacturing  Roll-to-Roll  Accumulator  Improved LADRC  Tension Control

摘要:纸张卷对卷涂布设备中放卷侧储料架是实现纸张大规模连续制造的重要组成部分,储料架内纸张张力的精确控制是保障纸张涂布制造质量的关键点。本文针对纸张卷对卷涂布设备中放卷侧储料架内纸张的张力控制问题,建立了储料架内纸张的张力耦合模型、输入输出辊和托架的动力学模型、滚轴丝杠的推力模型；融合遗传算法(GA)和LADRC控制器,设计了一个改进LADRC控制器来实现LADRC控制器的参数自整定和解决传统PID控制器控制精度不足,鲁棒性差等问题；结合所建立模型和所设计控制器展开了仿真实验,实验针对改进LADRC控制器的参数整定性能和储料架内纸张的张力控制性能展开了仿真实验。实验结果表明所设计的改进LADRC控制器能实现控制器的参数自整定,相比于传统PID控制器拥有更好的张力控制性能,能够满足放卷侧储料架内纸张涂布制造的张力控制需求。

Abstract:The unwinding side accumulator in roll-to-roll coating equipment is an important component for achieving large-scale continuous paper production. Precisely controlling the tension of the paper within the accumulator is crucial for ensuring the quality of paper coating manufacturing. This paper addresses the tension control issue of the paper within the unwinding side accumulator of roll-to-roll coating equipment. Firstly, a tension coupling model for the paper within the accumulator, as well as dynamic models for input-output rollers and carriage, and a thrust model for the ball screw, are established. Subsequently, by integrating genetic algorithms (GA) and the LADRC controller, an improved LADRC controller is designed to achieve parameters self-tuning of the LADRC controller and to address issues such as insufficient control precision and poor robustness of traditional PID controllers. Finally, simulation experiments are conducted based on the established models and designed controllers. The experiments focus on the parameters tuning performance of the improved LADRC controller and the tension control performance of the paper within the accumulator. The experimental results demonstrate that the designed improved LADRC controller can achieve parameters self-tuning and has better tension control performance compared to traditional PID controllers, meeting the tension control requirements for paper coating manufacturing within the unwinding side accumulator.