Magnetorheological fluid damper, adaptive vibration reduction system, rotor system, and vibration detection system

By introducing a second piston with adaptive elastic deformation and an elastic medium in the energy storage chamber into the magnetorheological fluid damper, combined with magnetic field control, the problem of cavitation under high-speed vibration is solved, achieving stable output of damping force and vibration reduction effect, and improving system reliability and lifespan.

CN122328489APending Publication Date: 2026-07-03ZHUHAI LANDA COMPRESSOR +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHUHAI LANDA COMPRESSOR
Filing Date
2026-03-06
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

Existing magnetorheological fluid dampers are prone to cavitation under high-speed vibration conditions, which leads to the destruction of fluid stability, increased wear and abnormal noise, and reduced vibration reduction reliability.

Method used

A magnetorheological fluid damper is designed, which adopts a second piston with adaptive elastic deformation and an elastic medium in the energy storage chamber. The viscosity and damping force of the magnetorheological fluid are controlled by a directional magnetic field. Combined with the synergistic effect of the flexible piston and the elastic medium, negative pressure is avoided and the dynamic and stable output of the damping force is achieved.

Benefits of technology

It effectively avoids cavitation, improves vibration reduction reliability and stability, extends service life, adapts to different vibration conditions, provides stable elastic support, and reduces wear and noise.

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Abstract

The application relates to the technical field of vibration control, in particular to a magnetorheological fluid damper, an adaptive damping system, a rotor system and a vibration detection system. The magnetorheological fluid damper is used for damping a vibrating body and comprises a working cavity formed in a cylinder body; a piston assembly comprising a first piston, a piston rod and a second piston; the first piston and the second piston are arranged in the working cavity in a first direction and separate the working cavity into a first chamber, a second chamber and an energy storage chamber; the first chamber and the second chamber are filled with magnetorheological fluid, and the energy storage chamber is filled with elastic medium; a damping channel is arranged through the first piston; the second piston can produce adaptive elastic deformation with the reciprocating movement of the first piston and the pressure fluctuation of the elastic medium; a magnetic field generating device is arranged in the interior of the first piston and is used for applying a directional magnetic field to the region provided with the damping channel. The application can avoid air cavity cavitation in the working cavity, reduce the fluctuation of damping force and improve the reliability of damping.
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