A variable reluctance magnetorheological damper

Abstract

The invention discloses a variable reluctance type magnetorheological damper. The damper comprises a shell, an upper cover plate, a lower cover plate, an upper permanent magnet, a lower permanent magnet, a first reluctance adjusting plate, a second reluctance adjusting plate, a third reluctance adjusting plate, a fourth reluctance adjusting plate, a transmission shaft, a movable damping fin set and a fixed damping fin set. The upper permanent magnet and the first reluctance adjusting plate are located in a first cavity and are fixedly connected. The lower permanent magnet and the second reluctance adjusting plate are located in a second cavity and are fixedly connected. The first reluctance adjusting plate and the second reluctance adjusting plate are connected through a connecting device, and rotation of the first reluctance adjusting plate and rotation of the second reluctance adjusting plate are achieved. The movable damping fin set is fixedly connected with the transmission shaft, the fixed damping fin set is fixedly connected with the shell, a first gap is formed between the movable damping fin set and the fixed damping fin set, and magnetorheological fluid is arranged in the first gap. Through the structure, the energy consumption can be reduced, heat generation is reduced, and extra radiating devices are not needed.

Description

technical field [0001] The invention relates to a magnetorheological damper, in particular to a variable reluctance magnetorheological damper. Background technique [0002] A magnetorheological damper is a device that provides motion damping. The main purpose of the magneto-rheological damper is to use damping energy consumption to reduce shock, which is widely valued in aerospace, aviation, vehicles, building anti-seismic and other industries; to use magnetorheology to generate controllable damping force, in force control technology, tactile reproduction, Robotics and other fields also have a wide range of applications. [0003] At present, magnetorheological dampers all use coil windings to generate a controllable electromagnetic field, thereby controlling the viscosity of magnetorheological fluid, and finally realizing the purpose of controllable damping of the damper. The advantage is that it can conveniently generate a controllable electromagnetic field to change the ...

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Problems solved by technology

But this method has significant disadvantages: the coil winding generates a controllable electromagnetic field by adjusting the current. Practice shows that under the same supply voltage, the current required by the electronically controlled magneto-rheological damper is already close to the corresponding torque motor. It shows that from the perspective of energy consumption, the current-controlled magnetorheological device has no advantages; secondly, studying the principle of the change of the fluid properties of the magnetorheological fluid, we found that the change of the rheological properties of the magnetorheological fluid does not depend on continuous energy input , that is to say, the magnetorheological damper is not an energy-consuming damper, so the electric energy required to maintain the electromagnetic field of the coil winding is an additional loss compared with the magnetorheological damper, and it is not a normal magnetorheological damper It is necessary for the work; third, the strong heating caused by high energy consumption also makes the damping characteristics of the magnetorheological fluid unstable, and it needs to be compensated

This restricts the popularization and application of magnetic flow dampers

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