Hybrid seismic control of buildings using tuned mass and magnetorheological dampers

Bhaiya, Vishisht; Bharti, Shiv Dayal; Shrimali, Mahendra Kumar; Datta, T. K.

doi:10.1680/jstbu.18.00090

Cited by 12 publications

(10 citation statements)

References 26 publications

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“…The fuzzy rules of the fuzzy controller were established based on the experience of specialists and by conducting a literature review. [28][29][30][31][32] The control current exerted by the fuzzy controller was determined according to the fuzzy rules. The control rules and membership function of the fuzzy controller are shown in Table 3 and Figure 11, respectively.…”

Section: Control Algorithm Selectionmentioning

confidence: 99%

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Hybrid isolation system with wire‐rope isolators and magnetorheological dampers for the isolation of blast‐induced vibration

Shen¹,

Li²,

Du³

2022

Structural Contr & Hlth

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Summary The aim of this research is to improve the isolation performance and energy dissipation characteristics of the widely used passive isolation (PI) system with wire‐rope isolators (WRIs) under the excitation of various blast‐induced vibration loads through the use of a semi‐active control system. A hybrid isolation (HI) system composed of WRIs and an innovative magnetorheological (MR) damper equipped with a motion controller is proposed, which can protect sensitive equipment and nonstructural elements by attenuating their dynamic response. The designs of the MR damper's magnetic circuit and control system were validated by establishing an electromagnetic field finite element model and a motion controller simulation model, respectively. A series of quasi‐static and shock table tests were conducted on models using three types of isolation: (1) a PI with WRIs, (2) an HI without a motion controller, and (3) an HI alone. The results show that the proposed MR damper can effectively restrain the tensile vibration of WRIs, significantly increase the isolation rate, and provide greater energy dissipation in HI systems with different weights of static loading subjected to various blast‐induced vibration loads.

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Section: Control Algorithm Selectionmentioning

confidence: 99%

“…The fuzzy rules of the fuzzy controller were established based on the experience of specialists and by conducting a literature review 28–32 . The control current exerted by the fuzzy controller was determined according to the fuzzy rules.…”

Section: Design Of the Hi Systemmentioning

confidence: 99%

Hybrid isolation system with wire‐rope isolators and magnetorheological dampers for the isolation of blast‐induced vibration

Shen¹,

Li²,

Du³

2022

Structural Contr & Hlth

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“…Hu et al [34] proposed, manufactured and tested an MR damper with serial-type flow channels, which had multiple axial annular channels. The maximum positive damping force reaches 5486 N and the dynamic adjustable range reaches to 7.…”

Section: Introductionmentioning

confidence: 96%

“…Magnetorheological (MR) damper is widely employed for semi-active control in the vibration isolation systems, including the automobile [1][2][3][4], civil structures [5][6][7], aerospace [8][9][10] and prosthetic knees [11,12]. With the MR fluid as the working medium, the MR damper efficiently achieves the continuous damping control, fast response speed, and low energy consumption [13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of Magnetorheological Damper with Folded Resistance Gaps and Bending Magnetic Circuit

Liu

Zhou

et al. 2022

Actuators

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The traditional magnetorheological (MR) damper subject to the limited space has shortcomings such as small damping force, narrow dynamic range and low adaptability. In this study, a new MR damper with folded resistance gaps and bending magnetic circuit was proposed for improving the damping performance. The length of the resistance gap was increased by configuring the multi-stage folded annular gap structure, and the magnetic circuit was established to activate the non-flux region. The mathematical model was established for the MR damper to analyze the damper force, magnetic circuit and dynamic performance. Subsequently, the finite element analysis (FEA) methodology was utilized to investigate the changes of magnetic flux densities in the folded resistance gaps. The test rig was setup to explore and verify the dynamic performance of the proposed MR damper under different excitation conditions. The results indicate the maximum damping force is approximately 4346 N at the current of 1.5 A, frequency of 0.25 Hz and amplitude of 7.5 mm. The damping force and dynamic range of the proposed MR damper are enhanced by 55.82% and 62.21% compared to that of the traditional MR damper at the applied current of 1.5 A, respectively, thus highlighting its high vibration control ability.

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“…According to Bhaiya [6] and Hu and He [7], the hybrid controller has a wider frequency range than the passive controller, making it more efficient and requiring less force than the active one, which reduces the cost of the system. In the case of a power failure or failure of the active control component, the passive component of the hybrid control still offers some level of protection The hybrid mass damper (HMD) is the combination of a tuned mass damper (TMD) with an active control actuator [8,9].…”

Section: Introductionmentioning

confidence: 99%

Comparison of Control Algorithms Applied to an Hybrid Mass Damper Attached to an Wind Turbine Tower

Rocha¹,

Ávila²

2021

Proceedings of the 8th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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The structural control, basically, promotes a change in the damping and stiffness properties of the structure, either by the addition of external devices or by the action of external forces. It can be classified as: passive control, active control, hybrid control or semi-active control (Soong & Dargush, 1997). The hybrid mass damper (HMD) is a system that deals with the combination of a tuned mass damper (TMD) with an active control actuator. In addition to requiring lower control forces and maintaining its efficiency over a long range of frequencies, this system has a more robust and reliable control, when compared to active and passive alone (Collette & Chesné, 2016). Among the structures, the wind turbine stands out, which is supported by towers, which due to its geometry and height, are slender, flexible and can suffer excessive levels of vibration caused by the operation of the turbine, as well as by external forces (Woude & Narasimhan, 2014). In this work it is proposed the application of a structural control system, in the way of HMD, to protect a wind tower with theoretical dimensions and with a simplified as single degree of freedom model, submitted to wind and seismic loads that leads to levels of undesirable vibrations that may compromise the safety and integrity of the structure. In addition, it is proposed to compare the performances obtained from the system without control and by the Instantaneous Optimal Control (IOC), Proportional Integral Derivative (PID) and Linear Quadratic Regulator (LQR) controllers with numerical simulations performed using the MAPLESOFT, MATLAB and its Simulink control toolbox. The results obtained numerically were analyzed and compared with each other, and it was observed that HMD was efficient in reducing the dynamic response of the tower. Although it is a preliminary model, it is a basis for studies in this area to evolve into a more sophisticated model and fullscale applications.

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Hybrid seismic control of buildings using tuned mass and magnetorheological dampers

Cited by 12 publications

References 26 publications

Hybrid isolation system with wire‐rope isolators and magnetorheological dampers for the isolation of blast‐induced vibration

Hybrid isolation system with wire‐rope isolators and magnetorheological dampers for the isolation of blast‐induced vibration

Performance Analysis of Magnetorheological Damper with Folded Resistance Gaps and Bending Magnetic Circuit

Comparison of Control Algorithms Applied to an Hybrid Mass Damper Attached to an Wind Turbine Tower

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