The print productivity and medium dimensions of wide-format roll-to-roll printing systems are limited by position errors induced by step-wise medium transportation. The aim of this article is to develop a design framework for multivariable repetitive control (RC), that enables improved productivity and accuracy through continuous media flow printing. The developed technical framework for RC explicitly addresses the tradeoff between performance and modeling requirements through decentralized designs. In particular, systematic design approaches are developed that explicitly address unmodeled interaction as uncertainty, i.e., through robustness. The result is a range of solutions, including 1) independent single-input single-output (SISO) designs, and 2) sequential SISO design. Experimental results confirm that the developed RC framework in conjunction with continuous media flow printing outperforms existing approaches.

中文翻译：

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多变量重复控制：分散设计在连续介质流打印中的应用

宽幅卷对卷打印系统的打印生产率和介质尺寸受到逐步分步介质运输引起的位置误差的限制。本文的目的是开发一种用于多变量重复控制（RC）的设计框架，该框架可通过连续介质流打印来提高生产率和准确性。RC的已开发技术框架通过分散设计明确解决了性能和建模需求之间的折衷。特别是，开发了系统设计方法，这些方法明确地将未建模的交互作为不确定性（即通过健壮性）解决。结果是一系列解决方案，包括1）独立的单输入单输出（SISO）设计和2）顺序的SISO设计。