Perancangan Sistem Kendali Platform Offshore Steel Jacket Dengan Tuned Mass Damper Berbasis Linear Quadratic Gaussian

Ikmal Fata, Muhammad Rifqi (2025) Perancangan Sistem Kendali Platform Offshore Steel Jacket Dengan Tuned Mass Damper Berbasis Linear Quadratic Gaussian. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Platform offshore adalah struktur besar yang terbuat dari baja, beton, atau gabungan keduanya, dan diaplikasikan di perairan lepas pantai untuk menampung pekerja dan peralatan yang dibutuhkan untuk pengeboran atau produksi sumber daya alam melalui terowongan atau sumur dasar laut. Salah satu tipe platform offshore yang paling populer yaitu platform offshore terpancang tipe steel jacket. Sifat platform yang terpancang ke dasar laut harus selalu dalam kondisi stabil meskipun menghadapi gangguan dari lingkungan yaitu gelombang laut. Salah satu upaya untuk menstabilkan platform adalah dengan mengaplikasikan peredam seperti Tuned Mass Damper (TMD). Sistem kendali yang sesuai dengan TMD dapat meningkatkan stabilitas platform agar dapat meredam osilasi secara efektif. Penelitian ini mengusulkan suatu desain sistem kendali Linear Quadratic Gaussian (LQG), yang menggabungkan metode Linear Quadratic Regulator dan Filter Kalman sebagai suatu kendali optimal. Perancangan sistem kendali dilakukan setelah dipastikan bahwa sistem memenuhi syarat keterkendalian dan keteramatan. Penerapan sistem kendali LQG mampu meredam respon osilasi platform yang diberi gangguan gelombang secara efektif. Respon sistem saat diaplikasikan LQG menunjukkan percepatan pencapaian waktu kondisi stabil dibandingkan tanpa kendali, yaitu secara berturut-turut terjadi percepatan 71,19%; 38,98% dan 56,35% untuk mode getaran pertama yang digerealisasi, mode kedua yang digeneralisasi dan horizontal TMD.
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An offshore platform is a large structure constructed of steel, concrete, or a combination of both, and is applied in offshore waters to accommodate workers and equipment needed for drilling or producing natural resources through tunnels or wells on the seabed. One of the most popular types of offshore platforms is the steel jacket type anchored offshore platform. The nature of the platform anchored to the seabed requires it to be stable in handling disturbances from the environment such as ocean waves. One effort to stabilize the platform is to apply a damper such as a Tuned Mass Damper (TMD). However, a control system is still needed that can increase platform stability in order to effectively dampen oscillations. In this study, a Linear Quadratic Gaussian (LQG) control system was designed, which combines the Linear Quadratic Regulator and Kalman Filter methods to achieve optimal control. The design of the control system was carried out after ensuring that the system met the requirements of controllability, observability, and stability. The application of the LQG control system was able to effectively dampen the oscillation response of the platform that was disturbed by waves. The system response when LQG is applied shows a reduction in the time needed for the system to reach a stable condition compared to without control system, namely an acceleration of 71,19%; 38,98% and 56,35% for the generalized first vibration mode coordinates, the second generalized vibration mode coordinates, and the horizontal TMD displacement, respectively.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Linear Quadratic Gaussian, Platform Offshore, Tuned Mass Damper, Stabilitas, Offshore Platform, Stability
Subjects:	T Technology > T Technology (General) T Technology > T Technology (General) > T57.62 Simulation T Technology > T Technology (General) > T57.74 Linear programming T Technology > TC Hydraulic engineering. Ocean engineering T Technology > TC Hydraulic engineering. Ocean engineering > TC1680 Offshore structures T Technology > TJ Mechanical engineering and machinery > TJ217.2 Robust control
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Physics Engineering > 30201-(S1) Undergraduate Thesis
Depositing User:	Muhammad Rifqi Ikmal Fata
Date Deposited:	07 Feb 2025 07:29
Last Modified:	07 Feb 2025 07:29
URI:	http://repository.its.ac.id/id/eprint/118559

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