Optimal Control of Magnetorheological Fluid Dampers for Seismic Isolation of Structures

El-Sinawi, Ameen; AlHamaydeh, Mohammad; Jhemi, Ali

doi:10.1155/2013/251935

Cited by 18 publications

(8 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The floor displacement and acceleration of controlled and uncontrolled for important locations. This simulation demonstrates the efficiency of reducing displacement and acceleration significantly at all floors of the benchmark building [45].…”

Section: Figure 17 A) Damper Implementation B) Controlled and Unconmentioning

confidence: 70%

A Review on the Magnetorheological Fluid, Damper and Its Applications for Seismic Mitigation

et al. 2018

View full text Add to dashboard Cite

Magnetorheological (MR) fluids and dampers have wide advances as smart materials because of its unique properties, notably, viscosity increases in the presence when magnetic field applied MR Fluids composed of three key components, including carrier fluid, surfactants and metal particles. The major applications of MR Fluids are in brakes, dampers, journal bearings, fluid clutches, pneumatic artificial muscles, aerospace etc. where electrical energy is converted to mechanical energy (Damping Force) in a controlled manner. Within a few milliseconds the fluid converts from liquid to semi solid state. Over the years, researchers were concerned on the ways to enhance the modelling precision. Though the proposed Dynamic models of MR Dampers represent displacement and force behaviour. In this review paper, the advances of MR Fluids, MR Damper, Damper Models, Energy harvesting and their applications for seismic resistance of structures are briefly discussed in the present study.

show abstract

Section: Figure 17 A) Damper Implementation B) Controlled and Unconmentioning

confidence: 70%

A Review on the Magnetorheological Fluid, Damper and Its Applications for Seismic Mitigation

et al. 2018

View full text Add to dashboard Cite

show abstract

“…MR dampers in smart isolation have been researched by El-Sinawi et al [2013] and Li et al [2013b]. Experimental research in SAVD control using MR dampers has been also conducted with purpose of evaluating the mitigation of the coupled translation and torsional responses of asymmetric structures [Mevada and Jangid, 2012].…”

Section: Combined Passive and Semi-active Control Strategiesmentioning

confidence: 99%

Technical Note: Active and Semi-Active Strategies to Control Building Structures Under Large Earthquake Motion

Morales‐Beltran

Paul

2015

Journal of Earthquake Engineering

View full text Add to dashboard Cite

Structural Design, Architectural Engineering and Technology, Faculty of Architecture and the Built Environment, TU Delft, Delft, the NetherlandsAs of today, about 80 buildings equipped with active or semi-active devices for wind and earthquake-induced motion control have been reported. In the first part of this technical note, full-scale applications are reviewed to investigate whether large and severe earthquake levels were targeted as control objectives. In the second part, not yet implemented research studies (2011 -2014) are reviewed. The main conclusion is that strategies integrating control and structural design are the key for implementing large earthquake-target control devices in buildings.

show abstract

“…There are two main types of devices based on MR fluids: the first one is linear MR dampers, used widely for semi‐active mitigation of vibrations, in seismic applications, as well as in semi‐active vehicle suspensions which are also, applied in prosthetics . The second group of devices are rotary brakes and clutches.…”

Section: Introductionmentioning

confidence: 99%

Composite active disturbance rejection robust control for a prototype of an active damping artificial ankle prosthesis

Serrano

Chairez

Luviano‐Juárez

2019

Asian Journal of Control

View full text Add to dashboard Cite

The problem of robust control applied to adjust the configuration of an ankle prosthesis based on disturbance estimation has been addressed in this study. Active disturbance rejection control was the paradigm used for controlling the robotic prosthesis by means of a direct active estimation. Based on this active estimation, the robust controller implemented the disturbance cancellation providing a fast converge to the origin of the tracking error. The uncertainties affecting the prosthesis dynamics were identified by a high‐order extended state high gain observer. This identification was used to force the tracking between the actual position and force needed in the ankle prosthesis and some reference values obtained by a biomechanical gait cycle analysis. Therefore, the estimated states were used to implement a robust output feedback controller that was effective to reject actively the perturbations. This rejection implemented within the controller forced the trajectory tracking to a small vicinity of the origin. A strategy based on composite Lyapunov function served to prove that tracking problem for the prosthesis was successfully solved despite the switching nature of the gait cycle. The controller was implemented in numerical simulations for showing the convergence of the tracking error. The convergence of this tracking error to the region around the origin was obtained within the first second of simulation.

show abstract

Optimal Control of Magnetorheological Fluid Dampers for Seismic Isolation of Structures

Cited by 18 publications

References 21 publications

A Review on the Magnetorheological Fluid, Damper and Its Applications for Seismic Mitigation

A Review on the Magnetorheological Fluid, Damper and Its Applications for Seismic Mitigation

Technical Note: Active and Semi-Active Strategies to Control Building Structures Under Large Earthquake Motion

Composite active disturbance rejection robust control for a prototype of an active damping artificial ankle prosthesis

Contact Info

Product

Resources

About