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A step-variable electromagnetic rheological damper

A variable damper and electromagnetic flow technology, applied in the field of step-variable electromagnetic rheological dampers, can solve the problems of large total damping force, limited electric energy collected, and small damping force, and achieve low cost, high stability, and structural design simple effect

Inactive Publication Date: 2018-01-02
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this type of self-powered magneto-rheological damper system has some shortcomings, usually as follows: (1) the collected electric energy is limited; (2) at high speed, the total damping force is large, correspondingly accompanied by large viscous damping force and large Coulomb damping force At the same time, at low speed, the damping force is small

Method used

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  • A step-variable electromagnetic rheological damper
  • A step-variable electromagnetic rheological damper

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Embodiment Construction

[0018] figure 1 It is a schematic diagram of the structure of the present invention. The present invention is a step-change electromagnetic rheological damper, including a non-magnetic outer cylinder 1, a non-magnetic inner cylinder 2, a magnetic inner cylinder 3, a piston 4, and a piston rod. 5. Exciting coil 6, guiding device 7, magnetorheological fluid 8, sealing ring 9, end cap 10, power supply 11.

[0019] The non-magnetic inner cylinder 2 and the magnetic inner cylinder 3 are fixed in the non-magnetic outer cylinder 1 as the inner cylinder, wherein the non-magnetic outer cylinder 1 and the non-magnetic inner cylinder 2 are made of aluminum alloy Material, magnetic conduction inner cylinder barrel 3 select electrician pure iron DT4 for use. The piston 4 is made of electric pure iron DT4, and is fixedly connected with the piston rod 5. Seven sets of excitation coils 6 are wound on the corresponding piston 4 in an orderly manner. Magnetorheological fluid 8 is distributed ...

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Abstract

The invention relates to an order-variable electromagnetic rheological damper and belongs to the field of mechanical vibration engineering. The on-off states of an effective magnetic circuit of the order-variable electromagnetic rheological damper are controlled by changing the distribution of magnetic circuit responding lengths, order-variable output of coulomb damping force is achieved, preset damping force is obtained, and effective shock absorption is conducted. An adopted piston is provided with a multi-level electromagnetic circuit. An inner cylinder tube section of the magnetic circuit is formed by connecting a magnetic-permeability material cylinder tube and non-magnetic-permeability material cylinder tubes. The order-variable electromagnetic rheological damper is simple in structure, high in application pertinence and high in stability and has other shock absorption properties.

Description

technical field [0001] The invention relates to a magneto-rheological vibration control technology, in particular to a step-variable electromagnetic-rheological damper. Background technique [0002] Magneto-rheological fluid is a stable suspension formed by dispersing and melting non-colloidal fine particles in an insulating carrier liquid, and its rheological behavior can be controlled with the change of an external magnetic field. It can instantly transform from a free-flowing liquid under the action of an external magnetic field It is semi-solid or even solid, showing strong controllable rheological properties. The magnetorheological damper is a most promising semi-active control device developed by using the rheological characteristics of magnetorheological fluid. It has both the reliability of passive control and the adaptability of active control, and compared with active control Low energy consumption, wide dynamic range, fast response, low energy consumption, simple...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16F9/53F16F9/32
CPCF16F9/3214F16F9/535F16F2222/12
Inventor 王四棋李德才张天奇
Owner BEIJING JIAOTONG UNIV
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