凹版印刷机放卷张力模糊自抗扰控制方法

目的提高凹版印刷机放卷系统张力控制的稳定性。方法结合模糊控制和自抗扰控制提出一种放卷张力控制方法。根据放卷系统的工作原理,分别建立料带张力、摆辊动力学、辊筒动力学的数学模型,进而得到放卷系统的非线性数学模型。为了提高控制系统的解耦性能、抗干扰性和内部鲁棒性,基于自抗扰控制的同时引入模糊控制,设计一种模糊自抗扰控制器,并进行相关仿真研究和分析。结果与PID控制器相比,该模糊自抗扰控制器较好地实现了系统解耦,而且具有更好的抗干扰性和内部鲁棒性。结论文中方法可以实现凹版印刷机放卷系统的恒张力控制。

Unwinding Tension Fuzzy-ADRC of Gravure Printing Machine

The work aims to improve the stability of tension control of the gravure press unwinding system. An unwinding tension control method was proposed combined with fuzzy control and active disturbance rejection control (ADRC). According to the working principle of unwinding systems, the mathematical models of strip tension, pendulum roller kinetics, roller kinetics were established respectively. Then, the nonlinear mathematical model of unwinding system was also obtained. In order to improve the decoupling performance, anti-interference performance and internal robustness of the control system, a fuzzy active disturbance rejection controller was designed when the fuzzy control was introduced based on the active disturbance rejection control, and related simulation research and analysis were carried out. The simulation results showed that, compared with the PID controller, the fuzzy-ADRC could well realize the system decoupling, and had better anti-interference performance and internal robustness. The method in the paper can realize the constant tension control of gravure press unwinding system.