A novel multifunctional rotary actuator with magnetorheological fluid

Guo, Hongtao; Liao, Wei-Hsin

doi:10.1088/0964-1726/21/6/065012

Cited by 45 publications

(43 citation statements)

References 26 publications

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“…As for magnetorheological brakes or clutches, many solutions based on the shear mode have been developed in the past years [13][14][15][16][17][18][19][20]. In these devices, the use of MR fluids allows to obtain smooth and steady transmissible/braking torque, with many potential applications especially when simple structure, smooth, reliable and variable compliance are desirable characteristics (i.e., in automotive industry, robotics, and gym/fitness equipments).…”

Section: Introductionmentioning

confidence: 99%

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Optimization of a Novel Magneto-Rheological Device With Permanent Magnets

Tucci¹,

Sani²,

Dio³

2017

PIER M

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Abstract-In this paper a novel evolutionary algorithm is used for the optimization of the performance of a magnetorheological (MR) device, capable to transmit torque between two shafts and powered by a system of Permanent Magnets (PMs). The stochastic, evolutionary, global optimization algorithm is based on a modified version of the self-organizing map. It uses a dedicated simplified analytical model of the device, developed in order to obtain a fast and accurate evaluation of the torque. Then, by means this model, the cost function to find the optimal parameters of the device is defined. Once the optimal parameters are identified, the performance of the proposed device is simulated by means of a FEM software. The results in terms of magnetic flux density inside the fluid, the transmissible torque and the actuation torque necessary to perform the device activation are discussed. Finally, a preliminary experimental validation of the proposed device is performed.

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Section: Introductionmentioning

confidence: 99%

“…Finally, very few examples of fluid excitation based on a pure PMs system can be found in literature [15,[17][18][19][20][21][22][23][25][26][27][28]. This solution has some advantages with respect to the conventional wired excitation system.…”

Section: Introductionmentioning

confidence: 99%

Optimization of a Novel Magneto-Rheological Device With Permanent Magnets

Tucci¹,

Sani²,

Dio³

2017

PIER M

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“…The choice of a magnetorheological (MR) fluid-based clutch, powered by permanent magnets, was suggested by several design constraints [4,5]. In particular, the safety requirements of the braking system needed the clutch to be fail-safe, and no axial load had to be exerted on the cam-shaft.…”

Section: Introductionmentioning

confidence: 99%

An innovative multi-gap clutch based on magneto-rheological fluids and electrodynamic effects: magnetic design and experimental characterization

Rizzo

2016

Smart Mater. Struct.

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In this paper an innovative multi-gap magnetorheological clutch is described. It is inspired by a device previously developed by the author’s research group and contains a novel solution based on electrodynamic effects, capable to considerably improve the transmissible torque during the engagement phase. Since this (transient) phase is characterized by a non-zero angular speed between the two clutch shafts, the rotation of a permanent magnets system, used to excite the fluid, induces eddy currents on some conductive material strategically positioned in the device. As a consequence, an electromagnetic torque is produced which is added to the torque transmitted by the magnetorheological fluid only. Once the clutch is completely engaged and the relative speed between the two shafts is zero, the electrodynamic effects vanish and the device operates like a conventional magnetorheological clutch. The system is investigated and designed by means a 3D FEM model and the performance of the device is experimentally validated on a prototype.

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“…The interesting behavior of MR fluid is the change in apparent viscosity with respect to the change in magnetic field. Some of the innovative products using MR fluids include dampers, clutches, brakes, hydraulic valves and actuators [1][2][3][4][5][6] and many of these products are already commercialized [7]. Normally, the devices that use MR fluids are classified into two types based on particle shape: i) sphere iron particle and ii) plate iron particle [8,9].…”

Section: Introductionmentioning

confidence: 99%

A State-of Art of Creative Sensor Devices Utilizing Magneto- Rheological Fluids

Kaluvan¹,

Kim²,

Oh³

et al. 2015

Int J Mech Syst Eng

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This article presents the state-of-the-art sensors design based on magneto-rheological (MR) fluid. In smart materials, the magneto-rheological fluid is one of the prominent material, which changes rheological properties on application of magnetic field. The MR fluid is mainly used for designing the dampers, clutches and mounts for heavy vehicle systems. However, the MR fluid can also be used for sensor design applications, which has not been much reported in the literature. This review paper summarizes the design of following novel sensors such as resonant, current, magnetic flux and tactile sensors designed using MR fluid. First, this article introduces the design and development of resonant based measurement system used for studying the properties of magneto rheological fluid. Secondly, this paper discusses about the novel electrical current measurement technique using MR fluid in shear mode of operation. This paper discuss on the design of novel variable resistor using the behavioural change of MR fluid in third. Finally, the design of tactile display utilizing magneto rheological fluid is introduced and discussed. Tactile display is used in robotic system in minimally invasive surgery (MIS) to provide a surgeon tactile information of touching remote biological tissues or organs. This review article will motivate the readers to design the novel sensors using magneto-rheological fluid with advanced technology.

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A novel multifunctional rotary actuator with magnetorheological fluid

Cited by 45 publications

References 26 publications

Optimization of a Novel Magneto-Rheological Device With Permanent Magnets

Optimization of a Novel Magneto-Rheological Device With Permanent Magnets

An innovative multi-gap clutch based on magneto-rheological fluids and electrodynamic effects: magnetic design and experimental characterization

A State-of Art of Creative Sensor Devices Utilizing Magneto- Rheological Fluids

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