Arom BoekfahMahidol University2018-12-212019-03-142018-12-212019-03-142017-12-28Engineering Journal. Vol.21, No.7 (2017), 475-483012582812-s2.0-85039913403https://repository.li.mahidol.ac.th/handle/20.500.14594/42532© 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.Mahidol UniversityEngineeringArticleSCOPUS10.4186/ej.2017.21.7.475