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Inferential Iterative Learning Control: A 2D-system approach

delete2016-09-01
delete34
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OA
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J
Joost Bolder *
T
Tom Oomen
DOI:10.1016/j.automatica.2016.04.029delete
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Abstract

Abstract

En 中文
Certain control applications require that performance variables are explicitly distinguished from measured variables. The performance variables are not available for real-time feedback. Instead, they are often available after a task. This enables the application of batch-to-batch control strategies such as Iterative Learning Control (ILC) to the performance variables. The aim of this paper is first to show that the pre-existing ILC controllers may not be directly implementable in this setting, and second to develop a new approach that enables the use of different variables for feedback and batch-to-batch control. The analysis reveals that by using pre-existing ILC methods, the ILC and feedback controllers may not be stable in an inferential setting. Therefore, the complete closed-loop system is cast in a 2D framework to analyze stability. Several solution strategies are outlined. The analysis is illustrated through an application example in a printing system. Finally, the developed theory also leads to new results for traditional ILC algorithms in the common situation where the feedback controller contains a pure integrator. (C) 2016 Elsevier Ltd. All rights reserved.
Keywords:
Iterative Learning Control
Inferential control
2D system
Stability along the pass
Limit profile
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Journal

Automatica cover
Automatica
IF:
5.9
Papers:
1.2W
Citations:
5.2W

Organization

E
Eindhoven University of Technology
Scholars:
1.6W
Papers: 1.5W
Citations: 2.2W