Annular gap and disc-shaped gap combined large adjustable damping range magneto-rheological damper

Abstract

The invention discloses an annular gap and disc-shaped gap combined large adjustable damping range magneto-rheological damper. The annular gap and disc-shaped gap combined large adjustable damping range magneto-rheological damper comprises a piston, an upper connecting ring, a lower connecting ring and a work cylinder. The piston comprises a magnet exciting coil. The upper connecting ring and thelower connecting ring are connected with a first body and a second body of a vehicle correspondingly, and accordingly the axis of the damper is located in the opposite movement direction of the firstbody and the second body. The piston divides the work cavity into an upper cavity and a lower cavity. The work cylinder contains magneto-rheological liquid, and accordingly when the first body and thesecond body oppositely move in the axis direction of the damper, the magneto-rheological liquid flows between the work cylinder upper cavity and the work cylinder lower cavity through the piston, thefluid characteristic of the magneto-rheological liquid can be controllably changed under the action of a changeable magnetic field generated due to electrification of the coil, accordingly the damping force of the damper is changed, and then vibration transmission between the first body and the second body is absorbed. According to the damper, the damper large damping range controllable adjustment can be achieved under the situation that the magneto-rheological liquid rheological property is not efficient enough, the response time is short, and system linearity is high.

Description

technical field [0001] The invention relates to the technical field of vehicle engineering, in particular to a magneto-rheological shock absorber with a large adjustable damping range combined with an annular gap and a disc-shaped gap. Background technique [0002] The vehicle is a complex system composed of many subsystems. During the driving process of the vehicle, the vibration generated by the unevenness of the ground or the operation of the power system is transmitted through each subsystem. The damping system between the subsystems of the related technology uses a fixed damping coefficient. Therefore, the ideal required damping force cannot be generated in a wide frequency domain, and it cannot be adjusted according to specific needs, and the applicability is poor. At the same time, the range of variable damping force of the magneto-rheological shock absorber is small, which needs to be solved. Contents of the invention [0003] The present invention aims to solve on...

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Problems solved by technology

[0002] The vehicle is a complex system composed of many subsystems. During the driving process of the vehicle, the vibration generated by the unevenness of the ground or the operation of the power system is transmitted through each subsystem. The damping system between the subsystems of the related technology uses a fixed damping coefficient. Therefore, the ideal required damping force cannot be generated in the wide frequency domain, and it cannot be adjusted according to specific needs, and the applicability is poor. At the same time, the range of variable damping force of the magneto-rheological shock absorber is small, which needs to be solved

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