Iterative-Based Optimal-Inverse Feedforward for Output-Tracking of Nonminimum-Phase Systems | Zendy

Arom Boekfah | Zendy

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Iterative-Based Optimal-Inverse Feedforward for Output-Tracking of Nonminimum-Phase Systems

Author(s) -

Arom Boekfah

Publication year - 2017

Publication title -

engineering journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.246

H-Index - 20

ISSN - 0125-8281

DOI - 10.4186/ej.2017.21.7.475

Subject(s) - feed forward , control theory (sociology) , inverse , tracking (education) , iterative learning control , phase (matter) , computer science , inverse system , mathematics , control engineering , engineering , physics , control (management) , artificial intelligence , psychology , pedagogy , geometry , quantum mechanics

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.

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