Positional Displacement Measurement of Floating Units Based on Aerial Images for Pontoon Bridges

Hirono, Yasuhiro; Mizuchi, Yoshiaki; Kim, Young-Bok; Choi, Yongwoon

doi:10.1007/978-3-319-50904-4_31

Cited by 3 publications

(4 citation statements)

References 3 publications

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“…According to Luenberger, 19 a full-state observer for the given linear system in equation (12) is generally represented as…”

Section: Controller Design With Robust State Estimatormentioning

confidence: 99%

“…Various control approaches have been proposed for surface vehicles and dynamic positioning. [8][9][10][11] Remarkably, Hirono et al 12 introduced a measurement system for displacement of floating units for pontoon bridges using vision-based position estimation. More recently, Nguyen et al 13 presented the mathematical modeling and numerical investigation of pontoon ribbon bridges, enabling automated installation and selfoperation of these structures, and further developments have been proposed regarding displacement control afterwards.…”

Section: Introductionmentioning

confidence: 99%

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Control system for installation and position keeping of interconnected flexible floating bridge

Lee

Kim

2020

Measurement and Control

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We propose an approach for floating bridge installation and operation. A floating bridge aims to carry heavy vehicles, trucks, and people over a body of water. However, bridge installation and operation are mainly performed by humans regardless of adverse conditions, such as active combat or disaster occurrence. For installing and operating floating bridges under such conditions, we devised a solution based on control system design and automatic installation. The floating bridge system is controlled and positioned by a power propulsion system that is attached to floating units of the bridge. An optimal control system based on state estimator, which is designed using a robust control framework, is applied to install and operate the bridge. A simulation analysis and experiments demonstrate the effectiveness of proposed method on a bridge system model comprising five floating units.

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“…According to Luenberger, 19 a full-state observer for the given linear system in equation (12) is generally represented as…”

Section: Controller Design With Robust State Estimatormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Control system for installation and position keeping of interconnected flexible floating bridge

Lee

Kim

2020

Measurement and Control

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“…Zhang et al [5] studied the dynamic responses of two analytical models of floating bridges, continuous-pontoon floating bridge and a discrete-pontoon floating bridge subjected to moving loads for different water depths, and concluded that water depth has a minor effect on the dynamic responses of floating bridges. Furthermore, Hirono et al [6] proposed a measurement system to determine the vertical displacement of a floating bridge. Other researchers preferred developing a finite element model to get symmetric simulations, considering the pontoons as a beam rested on elastic foundations and subjected to the applied loads [7].…”

Section: Introductionmentioning

confidence: 99%

Dynamic Behavior of Steel and Composite Ferry Subjected to Transverse Eccentric Moving Load Using Finite Element Analysis

et al. 2020

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The most important problems confronted by designers of floating structures are minimizing weight and increasing payload to get proper resistance to the applied loads. In the present study, the structural performance of a ferry is analyzed using both metallic and composite materials as a result of the dynamic load of the Military Load Capacity (MLC) 70 (tank load). The model is composed of sixteen floating pontoons. Finite element simulation and dynamic analysis were performed using ANSYS software (analysis system software), considering a moving MLC70 (tank load). Both concentric and eccentric cases of loading are considered. Draft, deformation, and stresses are obtained and investigated. For the steel ferry, the von-Mises stresses are investigated, while for the composite ferry, the maximum principal stresses are investigated. Furthermore, buckling analysis is performed on the composite ferry and the buckling load factor is determined. The results of the dynamic analysis illustrated that the transverse eccentricity of the moving tank MLC70 must not exceed 0.5 m for a steel ferry while it may reach up to 1.5 m for the composite ferry. This research can also be a useful tool in the design of floating composite and steel ferries.

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“…S. Fu and W. Cui presented the dynamic analysis of floating bridges [3]. Besides, Hirono et al [4] introduced a new study on measurement system for positional displacement of floating units for pontoon bridges. Most recently, Nguyen et al [5] presented the mathematical modelling and numerical investigation of the pontoon ribbon bridge such that it enables the possibility of automated installation and yaw-displacement correction.…”

Section: Introductionmentioning

confidence: 99%

A Study on Motion Control of Multiple Floating Units

Kim¹,

Lee²,

Trong³

et al. 2018

World Congress on Mechanical, Chemical, and Material Engineering

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This article describes the Pontoon Bridge installation problem. The Pontoon Bridge is called as Foldable Bridge which was designed to carry a heavy vehicles and trucks as a floating bridge or ferry by connecting several or many number of floating units. Until now, the installation job is almost done by hand without considering the worst cases which illustrate the disaster and hard environmental situation. It means that the installation job may be impossible in the hailed bullets situation. In this paper, the authors propose a new installation strategy to overcome all situations including the wartime.

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Positional Displacement Measurement of Floating Units Based on Aerial Images for Pontoon Bridges

Cited by 3 publications

References 3 publications

Control system for installation and position keeping of interconnected flexible floating bridge

Control system for installation and position keeping of interconnected flexible floating bridge

Dynamic Behavior of Steel and Composite Ferry Subjected to Transverse Eccentric Moving Load Using Finite Element Analysis

A Study on Motion Control of Multiple Floating Units

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