miştir. Design of A Two Axis Line of Sight Stabilization System for Vessels

By preventing the angular vibrations of the platform from being carried on to the axes of the attached imaging or laser systems, line of sight stabilization allows both a stable image to be obtained and a stable marker to be created. In this study, a two axis gimbal system that can be used in vessel...

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Main Authors: Necmi ALTIN, Melih SARP
Format: Article
Language:English
Published: Gazi University 2017-03-01
Series:Gazi Üniversitesi Fen Bilimleri Dergisi
Subjects:
Online Access:http://dergipark.gov.tr/download/article-file/290264
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author Necmi ALTIN
Melih SARP
author_facet Necmi ALTIN
Melih SARP
author_sort Necmi ALTIN
collection DOAJ
description By preventing the angular vibrations of the platform from being carried on to the axes of the attached imaging or laser systems, line of sight stabilization allows both a stable image to be obtained and a stable marker to be created. In this study, a two axis gimbal system that can be used in vessels and can be subjected to low frequency disturbances is designed. Instead of using direct drive DC torque motors which are usually used as an actuator in these kinds of systems, a brushless DC motor with an output connected to a harmonic drive gear was considered. Because a harmonic drive gear is enough to provide the required stabilization precision, there is no need for large and heavy direct drive motors which are necessary under high frequency disturbances. In this paper, firstly an angular velocity and torque relationship derived. The cross-coupling effect resulting from torque disturbances, which are themselves created due to the effects of the motions on the elevation and azimuth axes on other axes, was then calculated. Finally, a stabilization loop was designed for every axis using the vector control method and the brushless DC motor’s mathematical model. The entire model was then simulated in the Simulink and results were discussed.
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spelling doaj.art-2ae357800f3d4200b7f08aa7421d7ae42023-02-15T16:10:55ZengGazi UniversityGazi Üniversitesi Fen Bilimleri Dergisi2147-95262017-03-0151119137miştir. Design of A Two Axis Line of Sight Stabilization System for VesselsNecmi ALTINMelih SARPBy preventing the angular vibrations of the platform from being carried on to the axes of the attached imaging or laser systems, line of sight stabilization allows both a stable image to be obtained and a stable marker to be created. In this study, a two axis gimbal system that can be used in vessels and can be subjected to low frequency disturbances is designed. Instead of using direct drive DC torque motors which are usually used as an actuator in these kinds of systems, a brushless DC motor with an output connected to a harmonic drive gear was considered. Because a harmonic drive gear is enough to provide the required stabilization precision, there is no need for large and heavy direct drive motors which are necessary under high frequency disturbances. In this paper, firstly an angular velocity and torque relationship derived. The cross-coupling effect resulting from torque disturbances, which are themselves created due to the effects of the motions on the elevation and azimuth axes on other axes, was then calculated. Finally, a stabilization loop was designed for every axis using the vector control method and the brushless DC motor’s mathematical model. The entire model was then simulated in the Simulink and results were discussed.http://dergipark.gov.tr/download/article-file/290264Line of sight stabilizationGimbal systemGyroscopeStabilization loop
spellingShingle Necmi ALTIN
Melih SARP
miştir. Design of A Two Axis Line of Sight Stabilization System for Vessels
Gazi Üniversitesi Fen Bilimleri Dergisi
Line of sight stabilization
Gimbal system
Gyroscope
Stabilization loop
title miştir. Design of A Two Axis Line of Sight Stabilization System for Vessels
title_full miştir. Design of A Two Axis Line of Sight Stabilization System for Vessels
title_fullStr miştir. Design of A Two Axis Line of Sight Stabilization System for Vessels
title_full_unstemmed miştir. Design of A Two Axis Line of Sight Stabilization System for Vessels
title_short miştir. Design of A Two Axis Line of Sight Stabilization System for Vessels
title_sort mistir design of a two axis line of sight stabilization system for vessels
topic Line of sight stabilization
Gimbal system
Gyroscope
Stabilization loop
url http://dergipark.gov.tr/download/article-file/290264
work_keys_str_mv AT necmialtin mistirdesignofatwoaxislineofsightstabilizationsystemforvessels
AT melihsarp mistirdesignofatwoaxislineofsightstabilizationsystemforvessels