On a combination of ground-hook controllers for semi-active tuned mass dampers

Viet, La Duc; Nghi, Nguyen Ba; Hieu, Nguyen N.; Hung, Duong The; Linh, Nguyễn Ngọc; Hung, Lun-Ping

doi:10.1007/s12206-014-0109-3

Cited by 29 publications

(17 citation statements)

References 13 publications

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“…For the case of semi-active control, the displacement based groundhook algorithm that belongs to the category of direct output feedback controllers (i.e., the control actions are calculated based on a limited number of measurements) is selected. The choice of this direct output feedback controller for the case of semi-active control is based on the reduction of the computational effort required for the online calculation of Equations (7) and (8), requirement of minimum state measurements as well as its enhanced performance over other conventional direct output feedback controllers as shown in the studies of [21,27]. The mathematical expressions describing the control algorithm used in the derivation of the control actions are found in [28,29].…”

Section: Control Methodsmentioning

confidence: 99%

A Novel Hybrid Semi-Active Mass Damper Configuration for Structural Applications

Demetriou

Nikitas

2016

Applied Sciences

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In this paper, a novel energy-and cost-efficient hybrid semi-active mass damper configuration for use in structural applications has been developed. For this task, an arrangement of both active and semi-active control components coupled with appropriate control algorithms are constructed and their performance is evaluated on both single and multi-degree of freedom structures for which practical constraints such as stroke and force saturation limits are taken into account. It is shown that under both free and forced vibrations, the novel device configuration outperforms its more conventional passive and semi-active counterparts, while at the same time achieving performance gains similar to the active configuration at considerably less energy and actuation demands, satisfying both strict serviceability and sustainability requirements often found to govern most modern structural applications.

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Section: Control Methodsmentioning

confidence: 99%

A Novel Hybrid Semi-Active Mass Damper Configuration for Structural Applications

Demetriou

Nikitas

2016

Applied Sciences

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“…The VB‐GH control policy has the largest impact compared with the other approaches in the higher frequency region (0.24‐0.28 Hz). In contrast to the VB‐GH approach, the power density of the tower top motion can be reduced significantly through the IVB‐GH approach in the low frequency region (0.2‐0.24 Hz) . Because the dominant loading caused by waves is mostly distributed in the low frequency range, the IVB‐GH control algorithm is expected to be the most promising method compared with other GH approaches when wave loading is the major contributor to the tower response, such as an extreme sea state.…”

Section: Structural Control Strategiesmentioning

confidence: 99%

An investigation on the impacts of passive and semiactive structural control on a fixed bottom and a floating offshore wind turbine

et al. 2019

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The application of structural control to offshore wind turbines (OWTs) using tuned mass dampers (TMDs) has shown to be effective in reducing the system loads. The parameters of a magnetorheological (MR) damper modeled by the Bouc‐Wen model are modified to utilize it as a damping device of the TMD. Rather than showcasing the intricate design policy, this research focuses on the availability of the MR damper model on TMDs and its significance on structural control. The impact of passive and semiactive (S‐A) TMDs applied to both fixed bottom and floating OWTs is evaluated under the fatigue limit state (FLS) and the ultimate limit state (ULS). Different S‐A control logics based on the ground hook (GH) control policy are implemented, and the frequency response of each algorithm is investigated. It is shown that the performance of each algorithm varies according to the load conditions such as a normal operation and an extreme case. Fully coupled time domain simulations are conducted through a newly developed simulation tool, integrated into FASTv8. Compared with the passive TMD, it is shown that the S‐A TMD results in higher load reductions with smaller strokes under both the FLS and the ULS conditions. The S‐A TMD using displacement‐based GH control is capable of reducing the fore‐aft and side‐to‐side damage equivalent loads for the monopile by approximately 12% and 64%, respectively. The ultimate loadings at the tower base for the floating substructure are reduced by 9% with the S‐A TMD followed by inverse velocity‐based GH control (IVB‐GH).

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“…Furthermore, the control algorithm also plays an important role in obtaining a good suspension performance. 10 For the SAS systems, numerous control schemes have been developed, such as sky-hook, 11 ground-hook, 12 proportional–integral–derivative (PID). 13 Also, some artificial algorithms such as fuzzy logic, 14 neural network 15 and model predictive control 4 have been also proved to be effective as the control strategies of the suspension system.…”

Section: Introductionmentioning

confidence: 99%

Design and analysis of an integrated sliding mode control–two-point wheelbase preview strategy for a semi-active air suspension with stepper motor-driven gas-filled adjustable shock absorber

Zhao

Wong²,

Ma³

et al. 2018

Proceedings of the Institution of Mechanical Engineers, Part I:

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This article proposes an integrated sliding mode control-two-point wheelbase preview strategy for semi-active air suspension system with gas-filled adjustable shock absorber. First of all, a vehicle suspension model with rolling lobe air spring and gas-filled adjustable shock absorber is built, following with a road input model for the front wheel. By describing the detailed structure and working process of the gas-filled adjustable shock absorber, the regulating mechanism between the stepper motor and the designed gas-filled adjustable shock absorber is established. Subsequently, the sliding mode control algorithm is applied to generate the desired damping force with the real-time state of the vehicle. Moreover, to predetermine the road profile for the rear wheel, a two-point wheelbase preview approach is proposed and its superiority is also illustrated as compared with the conventional single-point wheelbase preview approach. To evaluate the performance of the proposed system, numerical analysis is conducted with other three comparative schemes, namely, passive suspension system, active suspension system with H infinity control, and sliding mode controlcontrolled semi-active air suspension system with adjustable shock absorber. Simulation results show that the integrated sliding mode control-two-point wheelbase preview strategy can be successfully utilized in the semi-active air suspension system with stepper motor-driven gas-filled adjustable shock absorber, and the vehicle performance with the proposed system can be greatly improved.

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On a combination of ground-hook controllers for semi-active tuned mass dampers

Cited by 29 publications

References 13 publications

A Novel Hybrid Semi-Active Mass Damper Configuration for Structural Applications

A Novel Hybrid Semi-Active Mass Damper Configuration for Structural Applications

An investigation on the impacts of passive and semiactive structural control on a fixed bottom and a floating offshore wind turbine

Design and analysis of an integrated sliding mode control–two-point wheelbase preview strategy for a semi-active air suspension with stepper motor-driven gas-filled adjustable shock absorber

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