Iterative-based optimal-inverse feedforward for output-tracking of nonminimum-phase systems

© 2017, Chulalongkorn University. All rights reserved. Precision positioning plays a significant role in nonminimum-phase systems, especially toward biomedical applications. Precision output-tracking for a pre-specified output-trajectory can be obtained by iteratively modifying the control input bas...

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Bibliographic Details
Main Author: Arom Boekfah
Other Authors: Mahidol University
Format: Article
Published: 2018
Subjects:
Online Access:https://repository.li.mahidol.ac.th/handle/123456789/42532
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Institution: Mahidol University
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Summary:© 2017, Chulalongkorn University. All rights reserved. Precision positioning plays a significant role in nonminimum-phase systems, especially toward biomedical applications. Precision output-tracking for a pre-specified output-trajectory can be obtained by iteratively modifying the control input based on previous cycle data of the output-tracking error. This paper presents the implementation of iterative control together with optimal inversion-based feedforward that further improves the output-tracking performance of nonminimum-phase systems. Experimental results for the piezo-based flexible structure system are provided to illustrate the improvements.