Fuzzy semi-active control and analysis of wind-induced vibration of a ship lift

Zhou, Yao

doi:10.1617/s11527-014-0400-x

Cited by 3 publications

(1 citation statement)

References 19 publications

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“…Because of the low power consumption and high efficiency, the MRF damper is widely used in building structural control [228]. Zhou [97] reported a fuzzy semi-active control strategy for seismic response reduction using an MRF damper in ship lifting. Compared to the passive structure, the results of the simulation analysis shows the story drift reduced by 66.8%, and the maximum lateral interlayer velocity and acceleration at the top of the workshop reduced by 39.0% and 17.5% respectively.…”

Section: Building Structural Control Systemmentioning

confidence: 99%

State of the art of control schemes for smart systems featuring magneto-rheological materials

Choi¹,

Li²,

Yu³

et al. 2016

Smart Mater. Struct.

138

105

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Section: Building Structural Control Systemmentioning

confidence: 99%

State of the art of control schemes for smart systems featuring magneto-rheological materials

Choi¹,

Li²,

Yu³

et al. 2016

Smart Mater. Struct.

138

105

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Time Delay Consideration on a New Active Control Algorithm

Yanik

Aldemir

Bakioglu

2015

Volume 8: 27th Conference on Mechanical Vibration and Noise

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In the area of active control of structures, time delay consideration is an important parameter which must be taken into consideration for realistic numerical models. In this research, the performance of a new active control algorithm for several time delays under two different earthquake excitations was investigated numerically. The proposed performance index does not require a priori knowledge of seismic input and the solution of the nonlinear matrix Riccati equation to apply the control forces [1,2]. The proposed control introduces the seismic energy term into the performance index so that the mechanical energy of the structure, the control and the seismic energies are considered simultaneously in the minimization procedure, which yields cross terms in the performance index. A two story shear frame was modelled in Matlab-Simulink considering time-delay. A fully active tendon controller system is implemented to the system. 0–50 ms time delay was considered in the dynamic analysis. The change in the time delay steps was 5 ms. The effect of time-delay was investigated under synthetic and Erzincan NS (1995;95 Erzincan station) earthquakes. Kanai-Tajimi power spectral density function was used to generate synthetic earthquake motion. The behavior of the proposed control with time delay considerations is compared with the uncontrolled conventional structure.

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Risk Analysis and Optimization of Water Surface Deviation from Shafts in the Filling–Emptying System of a Mega-Scale Hydro-Floating Ship Lift

Liu

et al. 2021

Water

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Hydro-floating ship lifts are a milestone in the field of high dam navigation. In order to ensure the running safety of a hydro-floating ship lift, the effective integration of a numerical simulation method and cloud model theory was carried out to deal with the hydrodynamic risks presented by water surface deviations from the shafts in the filling–emptying system such as a lock. In this study, the average values of water surface deviation from the shafts were 0.2, 0.22 and 0.24 m, through numerical simulation on a similar hydro-floating ship lift at the lifting heights of 80, 100 and 120 m, respectively. An increase in the lifting height causes the water surface deviation from the shafts to increase, and the hydrodynamic risk is greatly increased in the equal inertial pipeline filling–emptying system. In addition, the water surface deviations from the shafts of the equal inertial pipeline and longitudinal culvert filling–emptying system like a lock were compared. The longitudinal culvert was better at optimizing running safety in the filling–emptying system and dealing with the uncertainty of water surface deviation from the shafts. The results show that the numerical simulation method and cloud model theory can effectively control the risk of water surface deviation from the shafts and can be used to aid in decision-making for risk prevention in relation to hydro-floating ship lifts.

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Fuzzy semi-active control and analysis of wind-induced vibration of a ship lift

Cited by 3 publications

References 19 publications

State of the art of control schemes for smart systems featuring magneto-rheological materials

State of the art of control schemes for smart systems featuring magneto-rheological materials

Time Delay Consideration on a New Active Control Algorithm

Risk Analysis and Optimization of Water Surface Deviation from Shafts in the Filling–Emptying System of a Mega-Scale Hydro-Floating Ship Lift

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