Modeling and Tension Control Based on an Improved LADRC for the Unwind Side Accumulator in Roll-to-roll Equipment
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.
paper coatingroll-to-rollaccumulatorimproved LADRCtension control