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A New Delayed Resonator Design Approach for Extended Operable Frequency Range

[+] Author and Article Information
Oytun Eris

AVL Turkey Abdurrahmangazi Mah. Ataturk Cad. 22, 34920, Istanbul, TURKEY
erisoy@itu.edu.tr

Baran Alikoc

Czech Institute of Informatics, Robotics, and Cybernetics, Czech Technical University in Prague, 160 00 Prague, Czech Republic
baran.alikoc@cvut.cz

Ali Fuat Ergenc

Istanbul Technical University Control and Automation Eng. Dept., 34469, Istanbul, TURKEY
ergenca@itu.edu.tr

1Corresponding author.

ASME doi:10.1115/1.4038941 History: Received April 19, 2017; Revised November 05, 2017

Abstract

The operable frequency range of the Delayed Resonators (DR) is known to be narrow due to stability issues. This study presents a novel approach for DR design with a combined feedback strategy that consists of a delayed velocity and non-delayed position feedback to extend the operable frequency range of the DR method. The non-delayed position feedback is used to alter the natural frequency of the DR artificially while delayed velocity feedback is employed to tune the frequency of DR matching with the undesired vibrations. The proposed method also introduces an optimization parameter that provides freedom for the designer to obtain fast vibration suppression while improving the stability range of the DR. An optimization approach is also provided within the scope of this study. Theoretical findings are verified over an experiment utilizing the active suspension system of the Quanser© Company.

Copyright (c) 2017 by ASME
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