印刷电子装备套准系统解耦控制策略

摘要

针对多层凹版印刷电子装备套准系统存在强耦合、强干扰和显著时滞性的问题,提出了一种基于前馈控制和自抗扰控制(ADRC)设计套准系统解耦控制器的方法.根据多层凹版印刷的套准机理,建立了套准系统非线性耦合数学模型,并利用小偏差法对该模型进行了线性化.以得到的线性模型为基础,将前馈控制和ADRC有机结合,设计了多层套准系统解耦控制器,其中,前馈控制对已建模干扰引起的套准误差进行控制,而ADRC则控制套准系统主回路并对未建模干扰进行主动估计和补偿.仿真研究表明,所提出的多层套准系统解耦控制策略很好的抑制了各印组之间存在的耦合和干扰,实现了高精度的多层套准控制.%Based on the feedforward control and active disturbance rejection control (ADRC),a decoupling control algorithm is presented to solve the strong coupling,strong interference and large delay problems in the register system of multi-layer gravure printed electronic equipment.According to the multi-layer register working principle in gravure printing,a coupling and nonlinear model is established,with a linear model of the register system derived based on the minimum deviation method.According to the linear model,a decoupling control algorithm is presented based on the feedforward control and ADRC for the multi-layer register system.The algorithm uses feedforward control to compensate the modeled interference,and uses the ADRC to adjust the inputs of the register system and actively estimate and compensate the un-modeled disturbances in real time.The results of computer simulation show that the proposed control algorithm can realize a decoupling control and has a good control performance for multi-layer register system.