Utilizing the Adaptive Control in Mitigating the Seismic Response of Adjacent Buildings Connected with MR Dampers

Al-Fahdawi, Omar A.S.; Barroso, Luciana R.; Soares, Rachel W.

doi:10.23919/acc.2018.8431135

Cited by 16 publications

(6 citation statements)

References 18 publications

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“…According to the control results, the displacement of the building was reduced compared to uncontrolled buildings. Omar et al [36] examined the seismic responses of multistory buildings with MR dampers. The SAC method was utilized to regulate the behavior of a MR damper.…”

Section: Civil-engineering Applicationmentioning

confidence: 99%

See 1 more Smart Citation

Applications of Magnetorheological Fluid Actuator to Multi-DOF Systems: State-of-the-Art from 2015 to 2021

Sohn

Choi

2022

Actuators

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This review article presents various multi-DOF application systems that utilize smart magnetorheological (MR) fluid. It is well known that MR fluid has been actively studied and applied in many practical systems such as vehicle suspension dampers. The design requirements for the effective applications of MR fluid include geometry optimization, working principles, and control schemes. The geometry optimization is mostly related to the size minimization with high damping force, while the working principles are classified into the shear mode, the flow mode, and the squeeze mode depending on the dominant dynamic motion of the application system. The control schemes are crucial to achieve final targets such as robust vibration control against disturbances. It should be addressed that advanced output performances of MR application systems heavily depends on these three requirements. This review article presents numerous application systems such as sandwich structures, dampers, mounts, brakes, and clutches, which have been developed considering the three design requirements. In addition, in this article some merits and demerits of each application system are discussed to enable potential researchers to develop more effective and practical MR application systems featuring the multi-DOF dynamic motions.

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Section: Civil-engineering Applicationmentioning

confidence: 99%

“…The SAC method was utilized to regulate the behavior of a MR damper. An adaptive controller can properly handle the structural feature changes that occur during earthquakes [36,37]. Talatahari et al [38,39] studied the alternative modeling of a MR damper using a Takagi-Sugeno-Kang (TSK) fuzzy inference system.…”

Section: Civil-engineering Applicationmentioning

confidence: 99%

Applications of Magnetorheological Fluid Actuator to Multi-DOF Systems: State-of-the-Art from 2015 to 2021

Sohn

Choi

2022

Actuators

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“…Other algorithms used for control and device placement optimization include: The adaptive control strategies have been studied to mitigate structural response and deal with the variation in structural parameters during a seismic event (Al-Fahdawi et al, 2018; Al-Fahdawi et al, 2019; Soares,et al, 2020a, 2020b; Al-Fahdawi et al, 2019). An incremental and gradient-based algorithm was developed by Xu and Teng (2002) and Takewaki (1997) for the placement of passive/active control devices.…”

Section: Introductionmentioning

confidence: 99%

Study on integrated response-based adaptive strategies for control and placement optimization of multiple magneto-rheological dampers-controlled structure under seismic excitations

Wani

Tantray

2021

Journal of Vibration and Control

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The application and optimization of control systems with multiple magneto-rheological dampers integrated into a civil engineering structure is a challenging task. The performance of the control system is strongly linked with the location and arrangement of control devices, and the optimal placement of control devices is inherently linked with the performance objective of the control algorithm. Therefore, for semi-active control devices, the placement algorithm should be well rooted within the control algorithm, for effective structural control. This article proposes response-based adaptive control strategies embedded with the device location optimization algorithm. The acceleration and inter-story drift responses of the structure are considered as the performance objective for two separate control strategies. The flexibility of this approach lies in the fact that the design algorithm for control and location of magneto-rheological dampers can be engineered based on the performance criteria of the system. This study involves numerical simulation of an actual five-story framed structure. The simulation results indicated that the seismic performance of the structure is strongly linked with the number, placement of the magneto-rheological damper, and the performance objective of the control strategy used. Also, the configuration and corresponding control provided by the response-based adaptive strategies performed better than the configuration predicted by the benchmark genetic algorithm using the H2/LQG controller.

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“…SAC is proven to guarantee perfect tracking asymptotically, and successfully avoids the use of identifiers and observers. It has been applied successfully to mitigate excessive response of large structures in many studies (Barkana and Kaufman, 1993;Bitaraf et al, 2010Bitaraf et al, , 2012Bitaraf and Hurlebaus, 2013;Amini, 2015;Javanbakht, 2016;Al-Fahdawi et al, 2018;Hosseini and Taghikhany, 2018;Soares et al, 2018). In this particular study, SAC is implemented to follow a model reference of the bridge considering original design parameters and controlled by LQR with full-feedback.…”

Section: Introductionmentioning

confidence: 99%

Adaptive control for response attenuation of seismically excited cable-stayed bridges

Soares

Barroso

Al-Fahdawi

2019

Journal of Vibration and Control

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Estimation of bridge’s parameters is bound to give rise to a certain amount of inaccuracy. Given the size of cable-stayed bridge structures, any percentage of error can lead to estimated stiffness, mass, and damping that differ greatly from the actual structural parameters. During their service life, bridge structures experience cracking, temperature variations, localized damage, and deterioration, which result in parametric variation. Adaptive control strategies can be a good alternative to control bridges subjected to seismic excitation, as they present robustness when in face of parametric variation. In this study, a semi-active adaptive control approach is proposed for mitigation of seismic responses of cable-stayed bridges. The approach is based on the simple adaptive control, which is a direct model reference adaptive control strategy for multiple-input–multiple-output systems, proven to guarantee perfect tracking asymptotically, and successfully avoid the use of observers. The proposed adaptive scheme adopts the nominal bridge controlled by the linear–quadratic regulator with full-feedback as a model reference. The adaptive technique is implemented to control semi-active magnetorheological damper devices, considering realistic implementation and design. The scheme’s ability in reducing seismic response of a cable-stayed bridge subjected to three earthquake records with different angles of incidence is evaluated and its performance is compared to classical control solutions. In order to evaluate robustness of the control scheme proposed, two different parametric changes are introduced. The proposed adaptive scheme gives the least average variation in performance for all the different parametric variations considered. The control solution presents increased robustness when compared to passive and semi-active resettable controllers; it requires a small number of nodes to be monitored and avoids complicated reconstruction of states.

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Utilizing the Adaptive Control in Mitigating the Seismic Response of Adjacent Buildings Connected with MR Dampers

Cited by 16 publications

References 18 publications

Applications of Magnetorheological Fluid Actuator to Multi-DOF Systems: State-of-the-Art from 2015 to 2021

Applications of Magnetorheological Fluid Actuator to Multi-DOF Systems: State-of-the-Art from 2015 to 2021

Study on integrated response-based adaptive strategies for control and placement optimization of multiple magneto-rheological dampers-controlled structure under seismic excitations

Adaptive control for response attenuation of seismically excited cable-stayed bridges

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