Observer Design For Underwater Glider

Underwater gliders have numerous advantages over the conventional underwater vehicles in oceanographic applications. Gliders offered long duration and long range missions with low energy consumption. Internal actuation design protected actuators from ocean environment and have higher durability....

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Main Author: Oo, Fhong Hao
Format: Thesis
Language:English
Published: 2014
Subjects:
Online Access:http://eprints.usm.my/60810/1/24%20Pages%20from%2000001780818.pdf
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spelling my-usm-ep.608102024-07-10T01:34:01Z Observer Design For Underwater Glider 2014-07 Oo, Fhong Hao TK1-9971 Electrical engineering. Electronics. Nuclear engineering Underwater gliders have numerous advantages over the conventional underwater vehicles in oceanographic applications. Gliders offered long duration and long range missions with low energy consumption. Internal actuation design protected actuators from ocean environment and have higher durability. Autonomous control strategies and path planning have been proposed by researchers. Controller for glider system required information from the system sensed outputs to perform closed-loop system. However some of the system states are difficult and unable to be measured during underwater and they are needed to be estimated. Presently the glider states estimation are based on assumption of constant angle of attack, pitch angle and so on. But this states estimation technique is lack of accuracy. To overcome this, linear observer has been proposed to estimate the unmeasured states and improved the estimation accuracy. However the states estimation by linear observer is only accurate for observation on linear model with motion close to equilibrium glide. For states estimation on nonlinear dynamic and all glide path aspect, nonlinear glider model based observer design is desired. 2014-07 Thesis http://eprints.usm.my/60810/ http://eprints.usm.my/60810/1/24%20Pages%20from%2000001780818.pdf application/pdf en public masters Perpustakaan Hamzah Sendut Pusat Pengajian Kejuruteraan Elektrik & Elektronik
institution Universiti Sains Malaysia
collection USM Institutional Repository
language English
topic TK1-9971 Electrical engineering
Electronics
Nuclear engineering
spellingShingle TK1-9971 Electrical engineering
Electronics
Nuclear engineering
Oo, Fhong Hao
Observer Design For Underwater Glider
description Underwater gliders have numerous advantages over the conventional underwater vehicles in oceanographic applications. Gliders offered long duration and long range missions with low energy consumption. Internal actuation design protected actuators from ocean environment and have higher durability. Autonomous control strategies and path planning have been proposed by researchers. Controller for glider system required information from the system sensed outputs to perform closed-loop system. However some of the system states are difficult and unable to be measured during underwater and they are needed to be estimated. Presently the glider states estimation are based on assumption of constant angle of attack, pitch angle and so on. But this states estimation technique is lack of accuracy. To overcome this, linear observer has been proposed to estimate the unmeasured states and improved the estimation accuracy. However the states estimation by linear observer is only accurate for observation on linear model with motion close to equilibrium glide. For states estimation on nonlinear dynamic and all glide path aspect, nonlinear glider model based observer design is desired.
format Thesis
qualification_level Master's degree
author Oo, Fhong Hao
author_facet Oo, Fhong Hao
author_sort Oo, Fhong Hao
title Observer Design For Underwater Glider
title_short Observer Design For Underwater Glider
title_full Observer Design For Underwater Glider
title_fullStr Observer Design For Underwater Glider
title_full_unstemmed Observer Design For Underwater Glider
title_sort observer design for underwater glider
granting_institution Perpustakaan Hamzah Sendut
granting_department Pusat Pengajian Kejuruteraan Elektrik & Elektronik
publishDate 2014
url http://eprints.usm.my/60810/1/24%20Pages%20from%2000001780818.pdf
_version_ 1804889001729982464