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1. WO2020163203 - MAGNETORHEOLOGICAL BRAKE WITH HIGH TORQUE AND FAST RESPONSE

Publication Number WO/2020/163203
Publication Date 13.08.2020
International Application No. PCT/US2020/016333
International Filing Date 03.02.2020
IPC
F16D 57/00 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
57Liquid-resistance brakes; Air-resistance brakes
F16F 9/53 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
9Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
32Details
53Means for adjusting damping characteristics by varying fluid viscosity, e.g. electromagnetically
CPC
F16D 2121/20
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
2121Type of actuator operation force
18Electric or magnetic
20using electromagnets
F16D 2131/00
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
2131Overall arrangement of the actuators or their elements, e.g. modular construction
F16D 57/002
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
57Liquid-resistance brakes; ; Brakes using the internal friction of fluids or fluid-like media, e.g. powders
002comprising a medium with electrically or magnetically controlled internal friction, e.g. electrorheological fluid, magnetic powder
F16F 2232/02
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
2232Nature of movement
02Rotary
F16F 9/535
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
9Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
32Details
53Means for adjusting damping characteristics by varying fluid viscosity, e.g. electromagnetically
535Magnetorheological [MR] fluid dampers
Applicants
  • VANDERBILT UNIVERSITY [US]/[US]
Inventors
  • WELLBORN, Patrick
  • MITCHELL, Jason
  • WEBSTER, Robert III.
Agents
  • SHAHEEN, Matthew M.
Priority Data
62/800,62204.02.2019US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) MAGNETORHEOLOGICAL BRAKE WITH HIGH TORQUE AND FAST RESPONSE
(FR) FREIN MAGNÉTORHÉOLOGIQUE À COUPLE ÉLEVÉ ET À RÉPONSE RAPIDE
Abstract
(EN) This disclosure relates to a magnetorheological (MR) brake. The MR brake includes a rotor constructed at least partially of a ferromagnetic material, and a housing that supports the rotor such that the rotor and the housing are rotatable relative to each other about an axis, wherein the housing and rotor are configured such that a fluid gap is defined between the housing and the rotor, and wherein portions of the housing adjacent the rotor are constructed at least partially of a ferromagnetic material. An MR fluid is disposed in the fluid gap. A current-carrying coil is excitable to generate a magnetic field within ferromagnetic portions of the rotor and the housing and acts on the MR fluid. At least one element constructed of a material having low magnetic permeability is configured route the lines of magnetic flux through surrounding higher permeability material on opposite sides of the fluid gap.
(FR) La présente invention concerne un frein magnétorhéologique (MR). Le frein MR comprend un rotor construit au moins partiellement en un matériau ferromagnétique, et un boîtier qui supporte le rotor de telle sorte que le rotor et le boîtier peuvent tourner l'un par rapport à l'autre autour d'un axe, le boîtier et le rotor étant configurés de telle sorte qu'un espace de fluide soit défini entre le boîtier et le rotor, et des parties du boîtier adjacentes au rotor sont construites au moins partiellement d un matériau ferromagnétique. Un fluide MR est disposé dans l'espace de fluide. Une bobine de transport de courantest excitée pour générer un champ magnétique à l'intérieur des parties ferromagnétiques du rotor et du boîtier et agit sur le fluide MR. Au moins un élément constitué d'un matériau ayant une faible perméabilité magnétique est configuré pour acheminer les lignes de flux magnétique à travers un matériau de perméabilité supérieure avoisinant les côtés opposés de l'espace de fluide.
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