Double-rod multi-stage diffraction active dual-control variable-damping magneto-rheological damper

Abstract

The invention discloses a double-rod multi-stage diffraction active dual-control variable-damping magneto-rheological damper, and belongs to the field of variable-damping magneto-rheological fluid instruments. The damper comprises a rheological fluid cylinder module, two sets of end cap modules completely identical in structure, two sets of diffraction piston modules completely identical in structure, magneto-rheological fluid and a power supply. The rheological fluid cylinder module comprises a coil cylinder body, a first coil and a first coil shielding layer. Each diffraction piston module comprises a diffraction piston body, a second coil, a second coil protective layer and a piston rod, wherein the diffraction piston body is provided with a bent through diffraction hole with the inner diameter gradually changed. When the diffraction piston modules move, the magneto-rheological fluid can flow between a rheological fluid lateral chamber and a rheological fluid central chamber. The magneto-rheological damper is reasonable in structure, has a gradually-changed work gap and symmetric magnetic field distribution, is large in damping force and can be controlled in a high precision mode.

Description

technical field [0001] The invention relates to the field of variable damping magnetorheological fluid instruments, in particular to a dual-rod multi-stage diffraction active dual-control variable damping magnetorheological damper. Background technique [0002] Under the action of a magnetic field, the magnetorheological fluid can be transformed from a Newtonian fluid to a Bingham semi-solid fluid within milliseconds, and can return to its original state after the magnetic field is removed. The magnetorheological damper made of magnetorheological fluid has the characteristics of small size, fast response and adjustable damping force. The working principle of the magnetorheological dampers in the prior art is basically the same, that is, the magnetic field generated by the excitation coil is used to change the shear yield strength of the magnetorheological fluid flowing in a constant working gap, so as to realize the control of the damping force. Although the magnetorheologi...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is: aiming at the problems of small damping force and inaccurate damping control existing in the prior art, the present invention provides an electric motor with reasonable structure, gradually changing working gap and symmetrical magnetic field distribution, large damping force and high precision. Controlled Magnetorheological Damper

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