Print Email Facebook Twitter Contactless control of suspended loads for offshore installations Title Contactless control of suspended loads for offshore installations: Proof of concept using magnetic interaction Author Atzampou, P. (TU Delft Dynamics of Structures) Meijers, P.C. (TU Delft Hydraulic Engineering) Tsouvalas, A. (TU Delft Dynamics of Structures; TU Delft Offshore Engineering) Metrikine, A. (TU Delft Hydraulic Engineering; TU Delft Engineering Structures) Department Hydraulic Engineering Date 2024 Abstract Current offshore wind turbine installation and positioning methods require mechanical equipment attached on the lifted components and human intervention. The present paper studies the development of a contactless motion compensation technique by investigating a magnetically controlled pendulum. The technique involves the interaction of a magnetic pendulum with an electromagnetic actuator. Two control modes are considered: the imposition of a desired motion to the mass and the motion attenuation of a prescribed pivot excitation. The numerical model is validated and calibrated against experiments and demonstrates excellent predictive capabilities. The control exerted is effective for a broad range of excitation frequencies and amplitudes. Important parameters associated with the performance of the technique such as the separation distance of the magnets and the saturation of the controller are identified. The controllability regions for effective control depending on the characteristics of the excitation are derived. The force amplitude of the contactless actuator is comparable to currently-used active tugger line control systems, but with the additional advantage of both attractive and repulsive forces. The findings of this paper illuminate the path for the further development of a non-contact control technique which has the potential to increase the efficiency of offshore wind installations. Subject Active vibration controlContactless controlMagnetic pendulumMotion manipulationOffshore wind installationPID control To reference this document use: http://resolver.tudelft.nl/uuid:093875bc-da1d-4727-8798-2c3740cb2628 DOI https://doi.org/10.1016/j.jsv.2024.118246 ISSN 0022-460X Source Journal of Sound and Vibration, 575 Part of collection Institutional Repository Document type journal article Rights © 2024 P. Atzampou, P.C. Meijers, A. Tsouvalas, A. Metrikine Files PDF 1-s2.0-S0022460X24000105-main.pdf 2.12 MB Close viewer /islandora/object/uuid:093875bc-da1d-4727-8798-2c3740cb2628/datastream/OBJ/view