On retaining a multi-module floating structure in an amplitude death state

Xia, Shuyan; Xu, Dianna; Zhang, H.C.; En-rong, QI; Hu, Jiajun; Wu, Yusen

doi:10.1016/j.oceaneng.2016.05.024

Cited by 26 publications

(6 citation statements)

References 28 publications

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“…Symbols Φij and G(xi,xj) denote the element of topological matrix and coupling function between the i th and the j th module. The formulation of these terms can be found in Xia et al. (2016).…”

Section: Model and Dynamic Characteristics Of A Floating Airportmentioning

confidence: 99%

“…Before elaborating the control process, firstly glance at dynamic behaviors of the floating airport. With the same parameter setting as used by Xia et al. (2016), the amplitude–frequency relationship of the modules is shown in Figure 2 as the wave period changes.…”

Section: Model and Dynamic Characteristics Of A Floating Airportmentioning

confidence: 99%

“…The second is the phenomenon of amplitude death (Bar-Eli, 1984), where all the sub-systems (modules) tend to be halted or trapped in a suppressed weak oscillatory state due to interaction among the oscillators of the network. The article by Xia et al. (2016) utilized this feature to control the stability of a floating airport, where the stiffness of connectors can be tuned according to the condition of amplitude death.…”

Section: Model and Dynamic Characteristics Of A Floating Airportmentioning

confidence: 99%

“…For the second and third groups of actuators, the vector Ψi,k is defined as In equations (5) and (6), vector H1(xi,xj) is the projection of relative displacements between the i th module and j th module onto each degree of freedom. Referring to the expression of couple function H1(xi,xj) (Xia et al., 2016), the expression of H1(xi,xj) can be written as …”

Section: Backstepping Control Of a Floating Airport With Output Samentioning

confidence: 99%

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Response control of a floating airport in heading waves with output saturation

Xia

Zhang

et al. 2018

Journal of Vibration and Control

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This paper presents a nonlinear control strategy to stabilize the response of a floating platform in waves. The floating platform consists of multiple floating modules connected in sequence with flexible connectors. A nonlinear dynamic model with a number of controllers is developed for the stability control of the chain-shape floating structure. The backstepping method in conjunction with the Lyapunov stability criteria is proposed to derive the control law for each of the control actuators where the actuator forces are limited with output saturation. The numerical experiments illustrate the feasibility and effectiveness of the control strategy in various conditions of heading waves. The performance of the control method is discussed, especially associated with the saturated output.

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Section: Model and Dynamic Characteristics Of A Floating Airportmentioning

confidence: 99%

Section: Model and Dynamic Characteristics Of A Floating Airportmentioning

confidence: 99%

Section: Model and Dynamic Characteristics Of A Floating Airportmentioning

confidence: 99%

Section: Backstepping Control Of a Floating Airport With Output Samentioning

confidence: 99%

See 2 more Smart Citations

Response control of a floating airport in heading waves with output saturation

Xia

Zhang

et al. 2018

Journal of Vibration and Control

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“…erefore, the reduction of the hydroelastic response of modular floating structures is significantly concerned. Except for liquid-contained rectangular tanks [13], several approaches have been proposed for mitigating the hydroelastic response of the VLFS under wave action, such as arranging breakwater in the periphery of VLFS [14], imposing control strategy [15], and equipping with wave energy conversion system. Another innovative method for the reduction of the hydroelastic response of the VLFS is to use flexible-hinge hybrid connectors instead of pure hinge connectors [16].…”

Section: Introductionmentioning

confidence: 99%

Response Suppression of Multiple Hinged Floating Structures by Using Rubber Cushion

Shi

Chen

et al. 2021

Shock and Vibration

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A brand-new rubber cushion is proposed in this paper, which is installed between hinged floating modules in order to reduce the relative motion of the pitch; meanwhile, the cushion can be used as a fender for anti-impact in the docking process. Using the linear wave potential method, the structural dynamic model is formulated where the equivalent stiffness matrix for the rubber cushion is obtained by an integrating method employing linear assumption in addition to considering the heterogeneity of rubber. A numerical analysis is presented for a two-module semisubmersible floating structure. The hydrodynamic responses and connector loads of the floating structures with a rubber cushion are analyzed by using the frequency domain approach in both regular and irregular waves. The topological design and stiffness parameter selection of the rubber cushion is studied. This work may provide a new idea for suppressing the pitch motion of multiple hinged floating structures.

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Very Large Floating Structures (VLFS): Overview

Cui

2022

Encyclopedia of Ocean Engineering

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On retaining a multi-module floating structure in an amplitude death state

Cited by 26 publications

References 28 publications

Response control of a floating airport in heading waves with output saturation

Response control of a floating airport in heading waves with output saturation

Response Suppression of Multiple Hinged Floating Structures by Using Rubber Cushion

Very Large Floating Structures (VLFS): Overview

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