An electrorheological damper

Abstract

The invention discloses an electro rheological damper. The electro rheological damper comprises an inner negative plate assembly, a piston assembly, a bottom cover 1, an outer cylinder, a positive plate mounting seat, a negative plate mounting seat, M positive plate assemblies and N outer negative plate assemblies. Positive and negative plates form a multi-layer cylindrical cavity, a damping characteristic is formed after applying a high-voltage direct current electric field, high-voltage insulating plastic strips are arranged between the pole plates to control gaps of the pole plates, and a plurality of independent chambers are isolated for damping control in different flow directions. Return springs in the piston assembly are used for restoring a piston to the intermediate position and providing a buffer function. A closed-loop magnetic circuit consisting of a HALBACH array, an electromagnetic coil winding, the piston and a central shaft realizes the measurement of the piston position, and is used as a position or a velocity signal of an oil cylinder piston for the control need of the electro rheological variable damping force. The electro rheological damper is connected in series between an oil cylinder and an energy accumulator through the pipeline connection, is suitable for the environment with strict installation space requirements, and is especially suitable for the vibration damping environment with active control requirements.

Description

technical field [0001] The invention belongs to the technical field of dampers, in particular to an electrorheological damper, which is suitable for industries such as vehicles, weapons, aviation, ships, industries, buildings, and bridges. Background technique [0002] When loads such as earthquakes, random wind loads, uneven road surfaces, engine excitation, and artillery launch impact force act on the structure, the structure will absorb a large amount of external energy, and the structure will have a structural dynamic response due to forced vibration. When the structural response exceeds its own deformation capacity, the structure is destroyed or damaged, such as the collapse of houses under the action of earthquakes, the fracture of pull cables under random wind loads, and the cracking of frame structures under the excitation of uneven road surfaces. In order to ensure the safety of the structure, the researchers put forward the concept of structural vibration control, ...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide an electrorheological damper, which solves the problem of electromagnetic force decay after heat accumulation of the damper actively controlled by electromagnetic force, and achieves a larger control range of damping force with little change in structural size

Images