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

Demetriou, Demetris; Nikitas, Nikolaos

doi:10.3390/app6120397

Cited by 38 publications

(26 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…in which ξ 1 is the damping ratio correlated with the coefficient of restitution e, which is expressed by Equation (12), and ξ 2 is the damping ratio correlated with approaching velocity.…”

Section: Improved Hertz Contact-based Pounding Modelmentioning

confidence: 99%

See 1 more Smart Citation

PTMD Control on a Benchmark TV Tower under Earthquake and Wind Load Excitations

2017

View full text Add to dashboard Cite

A pounding tuned mass damper (PTMD) is introduced by making use of the energy dissipated during impact. In the proposed PTMD, a viscoelastic layer is attached to an impact limitation collar so that energy can be further consumed and transferred to heat energy. An improved numerical model to simulate pounding force is proposed and verified through experimentation. The accuracy of the proposed model was validated against a traditional Hertz-based pounding model. A comparison showed that the improved model tends to have a better prediction of the peak pounding force. A simulation was then carried out by taking the benchmark Canton Tower, which is a super-tall structure, as the host structure. The dynamic responses of uncontrolled, TMD-controlled and PTMD controlled system were simulated under wind and earthquake excitations. Unlike traditional TMDs, which are sensitive to input excitations and the mass ratio, the proposed PTMD maintains a stable level of control efficiency when the structure is excited by different earthquake records and different intensities. Particularly, more improvement can be observed when an extreme earthquake is considered. The proposed PTMD was able to achieve similar, or even better, control effectiveness with a lower mass ratio. These results demonstrate the superior adaptability of the PTMD and its applicability for protection of a building against seismic activity. A parametric study was then performed to investigate the influence of the mass ratio and the gap value on the control efficiency. A comparison of results show that better control results will be guaranteed by optimization of the gap value.

show abstract

Section: Improved Hertz Contact-based Pounding Modelmentioning

confidence: 99%

“…As a result, various schemes have been proposed to improve the TMD for better robustness and reliability [12]. For example, a nonlinear hysteretic damper has been supplemented for enhanced energy dissipation [13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

PTMD Control on a Benchmark TV Tower under Earthquake and Wind Load Excitations

2017

View full text Add to dashboard Cite

show abstract

“…Various studies have been conducted on the development and implementation of control algorithms for vibration suppression [20]. Classical feedback control strategies receive considerable attention as no adaptation time or reference signal is needed.…”

Section: Introductionmentioning

confidence: 99%

Experimental Identification and Vibration Control of A Piezoelectric Flexible Manipulator Using Optimal Multi-Poles Placement Control

et al. 2017

View full text Add to dashboard Cite

This paper presents experimental identification and vibration suppression of a flexible manipulator with piezoelectric actuators and strain sensors using optimal multi-poles placement control. To precisely identify the system model, a reduced order transfer function with relocated zeros is proposed, and a first-order inertia element is added to the model. Comparisons show the identified model match closely with the experimental results both in the time and frequency domains, and a fit of 97.2% is achieved. Based on the identified model, a full-state multi-poles placement controller is designed, and the optimal locations of the closed loop poles are determined where the move distance of the closed loop poles is the shortest. The feasibility of the proposed controller is validated by simulations. Moreover, the controller is tested for different locations of the closed loop poles, and an excellent performance of the optimal locations of the closed loop poles is shown. Finally, the effectiveness of the proposed controller is demonstrated by experiments. Results show that the vibrations of the expected modes are significantly diminished. Accordingly, multi-mode vibrations of the manipulator are well attenuated.

show abstract

“…Various studies have been conducted on the development and implementation of control algorithms for vibration suppression [22]. Classical feedback control strategies receive considerable attention as no adaptation time or reference signal is needed.…”

Section: Introductionmentioning

confidence: 99%

Experimental Identification and Vibration Control of A Non-Collocated Piezoelectric Flexible Manipulator Using Optimal Multi-Poles Placement Control

Lou

Liao

Yang

et al. 2017

Preprint

View full text Add to dashboard Cite

This paper presents experimental identification and vibration suppression of a flexible manipulator with non-collocated piezoelectric actuators and strain sensors using optimal multipoles placement control. To precisely identify the system model, a reduced order transfer function with relocated zeros is proposed, and a first-order inertia element is added to the model to compensate the non-collocation. Comparisons show the identified model match closely with the experimental results both in the time and frequency domains, and a fit of 97.2% is achieved. Based on the identified model, a full-state multi-poles placement controller is designed, and the optimal locations of the closed loop poles are determined. The feasibility of the proposed controller is validated by simulations. Moreover, the controller is tested for different locations of the closed loop poles, and an excellent performance of the optimal locations of the closed loop poles is shown. Finally, the effectiveness of the proposed controller is demonstrated by experiments. Results show that the vibrations of the expected modes are significantly diminished. Besides, vibrations of the higher modes are also slightly suppressed. Accordingly, multi-mode vibrations of the manipulator are well attenuated, and the tip displacement converges quickly with the proposed method.

show abstract

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

Cited by 38 publications

References 27 publications

PTMD Control on a Benchmark TV Tower under Earthquake and Wind Load Excitations

PTMD Control on a Benchmark TV Tower under Earthquake and Wind Load Excitations

Experimental Identification and Vibration Control of A Piezoelectric Flexible Manipulator Using Optimal Multi-Poles Placement Control

Experimental Identification and Vibration Control of A Non-Collocated Piezoelectric Flexible Manipulator Using Optimal Multi-Poles Placement Control

Contact Info

Product

Resources

About