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

本课题针对纸张的卷对卷涂布设备,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)和线性自抗扰控制器(LADRC),设计了改进LADRC以实现LADRC的参数自整定和解决传统比例-积分-微分(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,针对改进LADRC的参数整定性能和储料架内纸张的张力控制性能展开仿真实验。结果表明,所设计的改进LADRC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。

The tension control issue of the paper within the unwinding side accumulator of roll-to-roll coating equipment was addressed in this paper.Firstly,a tension coupling mode for the paper within the accumulator,as well as dynamic modes for input-output rollers and car‐riage,and a thrust mode for the ball screw were established.Subsequently,by integrating genetic algorithms(GA)and the Linear Active Disturbance Rejection Control(LADRC)controller,an improved LADRC controller was designed to achieve parameters self-tuning of the LADRC controller and to address issues such as insufficient control precision and poor robustness of traditional proportional-integral-deriva‐tive(PID)controllers.Finally,simulation experiments were conducted based on the established modes and designed controllers.The experi‐ments focused on the parameters tuning performance of the improved LADRC controller and the tension control performance of the paper within the accumulator.The results demonstrated that the designed improved LADRC controller could achieve parameters self-tuning and hare better tension control performance compared to traditional PID controllers,meeting the tension control requirements for paper coating manufacturing within the unwinding side accumulator.