摘要:
A clutch for selective transmission of torque and power, utilizing pairs of coded arrays of permanent magnets affixed respectively to the driving member and the driven member. A shape memory alloy actuator brings to driving member and the driven member into proximity to engage the clutch via a higher-order mutual magnetic correspondence between the coded magnetic regions of the permanent magnet arrays. Also provided is a clutch having a magnetorheological fluid between the driving member and the driven member, to increase the torque and power transfer through the fluid when its viscosity is increased by the magnetic field of the arrays in proximity. Sets of corresponding teeth on the driving member and driven member mesh when the rotation of the members is synchronized, providing positive direct drive to prolong the service life of the fluid.
摘要:
A clutch for selective transmission of torque and power, utilizing pairs of coded arrays of permanent magnets affixed respectively to the driving member and the driven member. A shape memory alloy actuator brings to driving member and the driven member into proximity to engage the clutch via a higher-order mutual magnetic correspondence between the coded magnetic regions of the permanent magnet arrays. Also provided is a clutch having a magnetorheological fluid between the driving member and the driven member, to increase the torque and power transfer through the fluid when its viscosity is increased by the magnetic field of the arrays in proximity. Sets of corresponding teeth on the driving member and driven member mesh when the rotation of the members is synchronized, providing positive direct drive to prolong the service life of the fluid.
摘要:
A cable adapted for use as an actuator, adaptive structural member, or damper, includes a plurality of longitudinally inter-engaged and cooperatively functioning shape memory alloy wires.
摘要:
A cable adapted for use as an actuator, adaptive structural member, or damper, includes a plurality of longitudinally inter-engaged and cooperatively functioning shape memory alloy wires.
摘要:
Disclosed herein is a strut assembly that comprises a piston that is in slideable communication with a housing. The piston comprises a piston head having a channel in operative communication with a fluid that is disposed in the housing. An elastic member and an active element are disposed in the channel. The active element is in operative communication with the elastic member and is operative to change the shape of the elastic member.
摘要:
Disclosed herein is a strut assembly 10 comprising a locking device 11 in operative communication with a piston 3, wherein the locking device 11 comprises an active material operative to resist motion of the piston 3 in response to an activation signal. Disclosed herein too is a method of operating a strut assembly 10 comprising displacing a suspended body 60 in mechanical communication with a piston 3; activating an active material in operative communication with the piston 3; and controlling the motion of the suspended body 60.
摘要:
A magnetorheological fluid-based device and method may include the use of magnetorheological (MR) fluid, a primary magnetic field to control the viscosity of the fluid, and a secondary magnetic field to reduce clumping of ferromagnetic particles.
摘要:
Disclosed herein is a strut assembly 10 comprising of a piston 3 in slideable communication with a housing 2; a seal 6 in operative communication with the piston 3 and/or the housing 2; wherein the seal 6 comprises an active material adapted to control the motion of the piston 3. Disclosed herein too is a method of operating a strut assembly 10 comprising displacing a suspended body 60 in mechanical communication with a piston 3; wherein the piston 3 comprises a piston head 14 and a piston rod 12; activating an active material in operative communication with the piston head 14; and controlling the motion of the suspended body 60.
摘要:
Disclosed herein is a strut assembly 10 comprising a piston 3 in slideable communication with the housing 2; an actuator 16 in operative communication with the piston 3, wherein the actuator 16 comprises a shape memory material and is adapted to control the displacement of the piston. Disclosed herein too is a method of operating a strut assembly 10 comprising displacing a suspended body 60 in operative communication with a piston; and activating an actuator 16 in operative communication with the piston, wherein the actuator 16 comprises a shape memory material.
摘要:
A magnetorheological fluid-based device and method may include the use of magnetorheological (MR) fluid, a primary magnetic field to control the viscosity of the fluid, and a secondary magnetic field to reduce clumping of ferromagnetic particles.