1 Ocak 2024 Dergi makalesi Açık Erişim

Ozer, Hasan Omur; Hacioglu, Yuksel; Yagiz, Nurkan

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    <subfield code="a">&lt;p&gt;BackgroundThe twin rotor model is frequently studied by researchers because although it has a basic structure the coupled pitch and yaw motions are adequately represented. However, it is quite difficult to obtain an efficient controller due to external disturbances. Classical sliding mode controller (SMC), which is of first order, is recognized to be robust in case of parameter changes and external disturbances especially when the sliding motion takes place, but it possesses chattering in the control input which may damage the mechanical parts of the system.PurposeIn this study it was aimed to design a robust controller without chattering effect which will be used for the control of the twin rotor system in real time experiments.MethodsTo remedy the chattering issue, a novel fuzzy logic enhanced second-order sliding mode controller (FSOSMC) based on super twisting algorithm is proposed. This controller suppresses chattering while enhancing the robustness of the controller where the sliding surface slope parameter is updated online via a fuzzy logic unit. Then the proposed controller is implemented on an experimental twin-rotor system which has highly nonlinear and coupled dynamics.ResultsReal time experiments were performed on the twin rotor system using the proposed FSOSMC. For comparison purpose the SMC and second-order sliding mode controller (SOSMC) were also applied to the same system. The results have shown that the proposed controller increased the tracking performance without increasing the control effort while reducing the chattering.ConclusionsThe experimental results verified the success of the designed FSOSMC, therefore it may be recommended for the robust and precise control of aerial vehicles.&lt;/p&gt;</subfield>
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    <subfield code="a">Ozer, Hasan Omur</subfield>
    <subfield code="u">Istanbul Univ Cerrahpasa, Vocat Sch Tech Sci, Dept Elect &amp; Energy, Istanbul, Turkiye</subfield>
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    <subfield code="a">Fuzzy Logic Enhanced Second-Order Sliding Mode Controller Design for an Experimental Twin Rotor System Under External Disturbances</subfield>
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    <subfield code="p">JOURNAL OF VIBRATION ENGINEERING &amp; TECHNOLOGIES</subfield>
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