Magnetorheological damper with meandering magnetic circuit characteristics

Abstract

The invention discloses a magneto-rheological damper with a sinuous magnetic circuit characteristic, comprising a cylinder body, a cylinder cover, an end cover, a piston rod, an excitation coil, a piston end cover, a magnetic conducting ring, a magnetic-resistant ring and a sealing ring. A damping channel is formed between the magnetic-resistant ring and the magnetic conducting ring, a magneto-rheological liquid alternately flows in a chamber I and a chamber II through the damping channel when the piston rod moves, a damping force is generated because a pressure difference is formed between the chamber I and the chamber II, and the damping force can be changed when electrifying current in the excitation coil is changed. An induced magnetic field is generated after the excitation coil is electrified, a sinuous magnetic circuit is formed under the actions of the magnetic-resistant ring and the magnetic conducting ring, and the sinuous magnetic circuit passes through the damping channel several times, so that the utilization efficiency of the magnetic field is increased, and the magneto-rheological damper can have a relatively large damping force and a relatively wide dynamic regulating range under limited volume restraints. Meanwhile, the magneto-rheological damper is compact in structure, simple in processing and assembly and suitable for application to the fields of aerospace, machines and civil engineering.

Description

technical field [0001] The invention relates to a magneto-rheological damper, in particular to a magneto-rheological damper with meandering magnetic circuit characteristics. Background technique [0002] Magnetorheological fluid is an intelligent material with excellent performance. Under the action of a magnetic field, it can instantly transform from a Newtonian fluid with good fluidity to a semi-solid, and this change is continuous, controllable, and reversible. Utilizing the characteristics of magnetic fluid, the manufactured magnetorheological damper has excellent performances such as fast response, low power consumption, and simple structure. It can be used as a semi-active actuator with good application prospects in electronic control and mechanical systems. Provides a simple and fast-response interface between them. In recent years, magnetorheological dampers have been widely used in machinery, civil engineering, aerospace and other fields. [0003] In traditional m...

AI Technical Summary

Problems solved by technology

However, increasing the inner diameter of the damper cylinder will increase the volume and weight of the MR damper; reducing the width of the damping channel will greatly increase the damping force in the zero-field state, thus making the MR damper controllable. The range is greatly reduced, and in addition, it is easy to cause the blockage of the magnetorheological fluid in the damping channel

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