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


  • Arom Boekfah Mahidol University



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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Author Biography

Arom Boekfah

Department of Mechanical Engineering, Faculty of Engineering, Mahidol University, Nakhon Pathom 73170 Thailand


Published In
Vol 21 No 7, Dec 29, 2017
How to Cite
A. Boekfah, “Iterative-Based Optimal-Inverse Feedforward for Output-Tracking of Nonminimum-Phase Systems”, Eng. J., vol. 21, no. 7, pp. 475-483, Dec. 2017.

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