凹印机多色套准系统自抗扰解耦控制

针对凹版印刷机对套准控制高精度和高稳定性的要求,提出了一种利用自抗扰控制(active disturbance rejection control,ADRC)技术设计多色套准系统解耦控制器的方法.首先,根据无轴传动模式下多色套准系统的工作机理,建立了多色套准系统的非线性耦合数学模型,并根据ADRC解耦规则推导了套准系统的解耦模型,得到了套准系统的阶数和静态解耦模型.其次,在套准系统阶数和静态解耦模型的基础上,利用ADRC策略对套准系统解耦控制器进行了设计.最后,仿真结果表明,所设计的ADRC解耦控制器能够很好地对各种系统干扰进行补偿,实现了多色套准系统的高精度控制,具有比PID控制器更好的控制性能.

Active disturbance rejection decoupling control for multi-color register system in gravure printing machine

Based on active disturbance rejection control (ADRC) technique, a decoupling controller is presented to strengthen precision and stability of multi-color register system in gravure printing machine. First, according to the register system working principle, a nonlinear and coupling model is established, and then, under the ADRC decoupling rules, a decoupling model is constructed to determine the register system order and static decoupling model. Then, following the order and static decoupling model, an ADRC decoupling controller is designed to enhance the speed and accuracy of register control. Finally, the simulation shows that the proposed register decoupling controller is able to realize a high precision control for the multi-color register system and endowed with better control performance than PID controller in register control.