Material Lateral Position Guiding During Calendering Process Via Material Width Change Modeling and Model Predictive Control

Abstract

One of important control problems in calendering system is the web lateral position control: during calendering, the web deforms with a reduction of thickness and an expansion in width, this leads to potential lateral position deviation, especially when the web is not flat. This problem sometimes causes quality issues, hence, precise modeling and control need to be developed. This paper focuses on the web lateral position guiding by modeling and controlling a calendering system: a modeling method and a corresponding model predictive control are proposed. The study is based on electrode web calendering for Li-ion battery production and is supported by data collected from experiments on an industrial-scale winding machine.