Pengaturan Antena Mobile Pada Platform Bergerak Dua Derajat Kebebasan Menggunakan PID Lead Compensator

Historijanto, Rochdi (2004) Pengaturan Antena Mobile Pada Platform Bergerak Dua Derajat Kebebasan Menggunakan PID Lead Compensator. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Sistem pengarahan antena dilakukan melalui pengaturan sudut azimuth-elevasi berkas pusat antena lurus terhadap target (satelit). Sementara itu, pada sistem mobile antena ' terjadinya pergeseran pengarahan akibat gerakan platform dapat menurunkan gain parameter antena saat pengiriman (uplink) maupun penerimaan (downlink). Mengeliminasi depointing losses akibat ketidak tepatan orientasi antena pada sistem bergerak membutuhkan pengendalian orientasi pengarah secara berkelanjutan. Kontrol PID dengan lead compensator digunakan untuk melakukan mekanisme pengarahan mobile antena yang ' mempunyai manuver gerak platform dua derajat kebebasan, rolling dan pitching. Melalui kontrol PID lead compensator, sistematika pengarah azimuth-elevasi dikendalikan untuk mengeliminasi pointing error. Reposisi pengarah azimuth elevasi bekerja pada frekuensi gangguan pitching-rolling berkisar 0 - 0.5 Hz. Hasil percobaan menunjukkan, pengarah antena yang dirancang menggunakan kontrol PID Lead Compensator mempunyai mean pointing error 7.7” untuk sistem azimuth, dan 2.8 ° untuk pengarah elevasi pada manuver gerak platform rolling 0.175 Hz, dan pitching 0.3 Hz. Performasi yang dicapai PID lead compensator mampu meningkatkan akurasi pengarahan terhadap kontrol PID sebesar 200% pada sistem azimuth, dan 180% pada sistem elevasi pada standar akurasi tracking 0.1° pointing error.
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Antenna pointing system works by adjusting the azimuth and elevation angle of the antenna’s center. However, in the antenna of a mobile system there is pointing shift due to the platform movement which reduce the gain parameter of the antenna for uplink and downlink transmission. To eliminate depointing losses in a moving system continously control of the pointing orientation is needed. A PID control with lead compensator is used to control the orientation of the mobile antenna which stands on a maneuvering platform. This platform has two degree of freedom, rolling and pitching. Using this controller, the azimuth-elevation pointer is controlled to eliminate the pointing error due to pitching-rolling disturbance in frequency range 0 — 15 Hz. Using the controller proposed, the mean of the pointing error are 7.7° for the azimuth system and 2.8° for the elevation system when the platform maneuver are 0.175 Hz and 0.3 Hz for rolling and pitching respectively.

Item Type:	Thesis (Masters)
Additional Information:	RTE 629.831 2 His p 2004 3100005023000 (WEEDING)
Uncontrolled Keywords:	azimuth-elevasi, pointing error, PID Lead compensator
Subjects:	T Technology > TJ Mechanical engineering and machinery > TJ223 PID controllers
Divisions:	Faculty of Industrial Technology > Electrical Engineering > 20101-(S2) Master Thesis
Depositing User:	Anis Wulandari
Date Deposited:	29 Apr 2026 09:53
Last Modified:	29 Apr 2026 09:53
URI:	http://repository.its.ac.id/id/eprint/132941

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