Results 221 to 230 of about 90,752 (259)

Computer Controlled Rotational MR-brake for Wrist Rehabilitation Device

Journal of Intelligent Material Systems and Structures, 2010
This aricle presents a novel, computer controlled, magneto-rheological (MR) brake actuated, muscular rehabilitation, and evaluation device. The first part discusses various MR brake architectures and compares them. Simple analytical formulae are developed for a set of figures of merit, which point out the role played by the various parameters.
Preumont, André, Romanescu, IULIAN ILIE, Horodinca, MIHAITA, Avraam, More Thomas   +3 more
openaire   +2 more sources

Compact MR-brake with serpentine flux path for haptics applications

World Haptics 2009 - Third Joint EuroHaptics conference and Symposium on Haptic Interfaces for Virtual Environment and Teleoperator Systems, 2009
This research explores a new approach to shape the magnetic flux path in a MR brake. Magnetically conductive and non-conductive elements were stacked to weave the magnetic flux through the rotor and the outer shell of the brake. This approach enabled design of a more compact and powerful MR brake.
Doruk Senkal, Hakan Gurocak
openaire   +1 more source

Haptic Glove with MR Brakes for Distributed Finger Force Feedback

Presence: Teleoperators and Virtual Environments, 2009
Most existing haptic gloves are complicated user interfaces with remotely located actuators. More compact and simpler haptic gloves would greatly increase our ability to interact with virtual worlds in a more natural way. This research explored the design of a compact force feedback glove using a new finger mechanism and magnetorheological (MR) brakes
Conrad Bullion, Hakan Gurocak
openaire   +1 more source

MR-fluid yield surface determination in disc-type MR rotary brakes

Smart Materials and Structures, 2008
Magneto-rheological (MR) fluids are currently attracting a great deal of attention because of their unique rheological behavior. Many devices have been designed using MR fluids, and of potential interest here are disc-type MR rotary brakes. The plug flow region in MR devices is defined as the region where the fluid is not flowing.
Alireza Farjoud, Nader Vahdati, Yap Fook Fah   +2 more
openaire   +1 more source

A novel nonlinear modeling for estimate the dynamics of an MR brake

International Journal of Applied Electromagnetics and Mechanics, 2018
This paper presents a mathematical modeling of a magneto-rheological (MR) brake to determine a relationship between input current and output torque for applying a variety of control applications. The proposed model is consisted of two sub-models: a mechanical sub-model, using Bingham plastic model for MR fluid and a magnetic circuit sub-model through ...
Hong, Hyun-Wook, Lee, Jae-Hak, Yun, Young-Won, Kim, Dong-Hwan, Park, Myeong-Kwan   +4 more
openaire   +1 more source

MR Based Brake-by-Wire System With Self-Energizing and Brake Energy Harvesting Capability

Volume 8: 26th Conference on Mechanical Vibration and Noise, 2014
Brake-by-wire system is a more compact, more efficient brake system using electromechanical actuators instead of conventional hydraulic actuators. Magneto-rheological (MR) fluid is widely used in damping control due to its outstanding controllable properties.
Liangyao Yu, Xuhui Liu, Liangxu Ma, Lei Zuo, Jian Song   +4 more
openaire   +1 more source

Analysis of a Novel MR Rotary Brake with Permanent Magnet

Transactions of the Korean Society of Mechanical Engineers A, 2009
In this paper, a novel MR brake with permanent magnet is developed. This system consists of rotary disk, permanent magnet, spring and MR fluid. Permanent magnets are attached to the rotary disk and moves in the direction of radius. The magnets are linked to rotor axis by spring.
Dong-Won Yun, Jung-Ho Park, Young-Su Son, Hee-Chang Park, Cheol-Hoon Park   +4 more
openaire   +1 more source

Gap-Size Effect of Compact MR Fluid Brake

Journal of Intelligent Material Systems and Structures, 2011
MRF are kinds of functional fluids, whose rheological properties, especially shear stresses under shear rates, can be rapidly and repeatedly controlled with application of magnetic fields. CMRFB in which the MRF between multilayered disks works as a torque generator was developed in our previous works.
Takehito Kikuchi, Keigo Kobayashi, Akio Inoue   +2 more
openaire   +1 more source

Prosthetic leg powered by MR brake and SMA wires

SPIE Proceedings, 2014
Current knee designs for prosthetic legs rely on electric motors for both moving and stationary states. The electric motors draw an especially high level of current to sustain a fixed position. The advantage of using magnetorheological (MR) fluid is that it requires less current and can have a variable braking torque.
The Nguyen, Vicente Munguia, Jose Calderon   +2 more
openaire   +1 more source

New approach to designing an MR brake using a small steel roller and MR fluid

Journal of Mechanical Science and Technology, 2009
A generated resistance force in the deformation process is considered to increase the resistance torque of a Magneto-Rheological (MR) brake when a variable stiffness material is rolled under the cylindrical form of a roller. This paper proposes a new approach to increase the resistance torque of an MR brake using a large-size magnetic particle which ...
Tran Hai Nam, Kyoung Kwan Ahn
openaire   +1 more source