A Review on Parametric Dynamic Models of Magnetorheological Dampers and Their Characterization Methods

Rossi, Andrea; Orsini, Francesco; Scorza, Andrea; Botta, Fabio; Belfiore, Nicola Pio; Sciuto, Salvatore Andrea

doi:10.3390/act7020016

Cited by 60 publications

(57 citation statements)

References 118 publications

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“…The dynamic behaviour of an MR damper must take into consideration several phenomena [23,24]. One of such phenomena is hysteresis due to non-linear friction mechanisms [25][26][27][28]. Additional information on MR actuators dynamics to can be found at [29,30].…”

Section: Magneto-rheological Damper Modelmentioning

confidence: 99%

Semi-Active Vibration Control of a Non-Collocated Civil Structure Using Evolutionary-Based BELBIC

2019

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A buildings resilience to seismic activity can be increased by providing ways for the structure to dynamically counteract the effect of the Earth’s crust movements. This ability is fundamental in certain regions of the globe, where earthquakes are more frequent, and can be achieved using different strategies. State-of-the-art anti-seismic buildings have, embedded on their structure, mostly passive actuators such as base isolation, Tuned Mass Dampers (TMD) and viscous dampers that can be used to reduce the effect of seismic or even wind induced vibrations. The main disadvantage of this type of building vibration reduction strategies concerns their inability to adapt their properties in accordance to both the excitation signal or structural behaviour. This adaption capability can be promoted by adding to the building active type actuators operating under a closed-loop. However, these systems are substantially larger than passive type solutions and require a considerable amount of energy that may not be available during a severe earthquake due to power grid failure. An intermediate solution between these two extremes is the introduction of semi-active actuators such as magneto–rheological dampers. The inclusion of magneto–rheological actuators is among one of the most promising semi-active techniques. However, the overall performance of this strategy depends on several aspects such as the actuators number and location within the structure and the vibration sensors network. It can be the case where the installation leads to a non-collocated system which presents additional challenges to control. This paper proposes to tackle the problem of controlling the vibration of a non-collocated three-storey building by means of a brain–emotional controller tuned using an evolutionary algorithm. This controller will be used to adjust the stiffness coefficient of a magneto–rheological actuator such that the building’s frame oscillation under earthquake excitation, is mitigated. The obtained results suggest that, using this control strategy, it is possible to reduce the building vibration to secure levels.

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Section: Magneto-rheological Damper Modelmentioning

confidence: 99%

Semi-Active Vibration Control of a Non-Collocated Civil Structure Using Evolutionary-Based BELBIC

2019

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“…Some particularities of the application of magnetorheological (MR) fluid transmissions in microcompressors and pneumatic chokes had been described in scientific works [21][22][23][24][25][26][27][28][29][30][31][32][33].…”

Section: Theoretical and Experimental Background Of The Micro Choke Wmentioning

confidence: 99%

Research on Shape Memory Alloys and Magnetorheological Fluids for Use in Pneumatic Actuators

Kibirkštis¹,

Pauliukaitis²,

Vaitasius³

2019

Smart and Functional Soft Materials

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Adaptive vibrating actuators operating under autovibration regime were developed using materials with shape memory (SM). Mechanical characteristics of such type vibroactuators can be adjusted by changing geometrical parameters of chamber or throttle. It allows to expand the application of pneumatic vibroexciters and use them in different technological processes. Pneumatic vibroactuator elements that consist of magnetorheological (MR) fluids are proposed for micro-throttle and microcompressor design. The main properties of used MR materials and theoretical background of their mechanical and physical parameters are presented, some results of experimental and theoretical research of actuators are introduced and conclusions of the performed research are formulated.

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“…The MR damper inherently has hysteresis characteristics during non-linear friction mechanisms, and many efforts have been devoted to the modelling of this non-linear behaviour [15][16][17]. Static or quasi-static models include no dynamics but can express non-linear mapping from the velocity to the damping force [16,18,19].…”

Section: Mathematical Modelling Of An Mr Dampermentioning

confidence: 99%

Evolutionary-Based BEL Controller Applied to a Magneto-Rheological Structural System

2018

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This work addresses the problem of finding the best controller parameters in order to improve the response of a single degree-of-freedom structural system under earthquake excitation. The control paradigm considered is based on brain emotional learning (BEL) and the actuation over the building dynamics is carried out by changing the stiffness of a magneto-rheological damper. A typical BEL-based controller requires the definition of several parameters which can prove difficult and non-intuitive to obtain. For this reason, an evolutionary-based search technique has been added to the current problem framework in order to automate the controller design. In particular, the particle swarm optimization method is chosen as the evolutionary based technique to be integrated within the current control paradigm. The obtained results suggest that, indeed, it is possible to parametrize a BEL controller using an evolutionary-based algorithm. Moreover, a simulation shows that the obtained results can outperform the ones obtained by manual tuning each controller parameter individually.

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A Review on Parametric Dynamic Models of Magnetorheological Dampers and Their Characterization Methods

Cited by 60 publications

References 118 publications

Semi-Active Vibration Control of a Non-Collocated Civil Structure Using Evolutionary-Based BELBIC

Semi-Active Vibration Control of a Non-Collocated Civil Structure Using Evolutionary-Based BELBIC

Research on Shape Memory Alloys and Magnetorheological Fluids for Use in Pneumatic Actuators

Evolutionary-Based BEL Controller Applied to a Magneto-Rheological Structural System

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