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Direct-acting rigidity-controllable magneto-rheological fluid damper

A magnetorheological fluid and shock absorber technology, which is applied in the fields of precision machinery and mechanical vibration, can solve problems such as errors and differences, and achieve the effects of vibration reduction frequency bandwidth, low energy consumption, and good control effect.

Inactive Publication Date: 2017-10-20
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But in practical problems, there will always be some problems that cannot be solved by linear theory
Generally speaking, the linear model is only suitable for a small range of motion. Beyond this range, dealing with linear problems will not only cause large errors in quantity, but also sometimes qualitative differences, which prompts people to pay attention to nonlinear Vibration theory has been thoroughly studied

Method used

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  • Direct-acting rigidity-controllable magneto-rheological fluid damper

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Embodiment Construction

[0029] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific examples.

[0030] Such as figure 1 As shown, the magneto-rheological fluid shock absorber with controllable stiffness of the present invention is characterized in that it includes a controlled object and a magnetorheological fluid shock absorber installed on the controlled object, wherein:

[0031]The controlled object 1 is the vibration control object. The magneto-rheological fluid damper consists of a support plate 2, a slide rail 3, a slider 4, a connecting plate 5, a lock nut 6, an elastic washer 7, a piston rod 8, and an upper piston 9 , outer sleeve 10, excitation coil 11, inner sleeve 12, damping channel 13, magnetorheological fluid 14, lower end piston 15, floating piston 16, nitrogen chamber 17 and working cylinder 18. Both the side plate of the support plate 2 and the slide rail 3 are processed with M5 threaded holes, and the slide rail ...

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Abstract

The invention relates to a direct-acting magneto-rheological fluid shock absorber with controllable stiffness, which belongs to the technical field of vibration control. The shock absorber includes the controlled object and the magnetorheological fluid shock absorber, wherein the controlled object is the vibration control object, and the magnetorheological fluid shock absorber is composed of a support plate, a slide rail, a slider, a connecting plate, a lock nut, Gasket, piston rod, upper piston, outer sleeve, excitation coil, inner sleeve, damping channel, magnetorheological fluid, lower piston, floating piston, nitrogen chamber and working cylinder. The stiffness of the magnetorheological fluid in the magnetorheological fluid damper can be controlled by changing the current of the excitation coil, so as to meet the internal resonance requirements between the controlled object and the magnetorheological fluid damper in the system. The damping consumes vibration energy to achieve the purpose of vibration reduction. The invention utilizes the internal resonance phenomenon for vibration reduction, has obvious vibration reduction effect, strong robustness and less energy consumption, and has good practical value in the vibration reduction of vehicle engines, flexible mechanical arms and other fields.

Description

technical field [0001] The invention relates to a magneto-rheological fluid shock absorber based on controllable stiffness, which constructs the shock absorber based on magneto-rheological fluid technology from a nonlinear point of view, so that internal resonance occurs in the system composed of the controlled object and the shock absorber , and form an energy exchange channel, transfer the vibration energy of the controlled object to the vibration damping device and dissipate it by damping, which belongs to the technical field of mechanical vibration and precision machinery. Background technique [0002] With the development of the automobile industry in recent years, the requirements for the ride comfort and handling stability of automobiles are getting higher and higher. During the driving process of the car, due to the complexity of its own structure and the influence of external factors, the vibration in the cab is relatively large, which will not only affect the work ...

Claims

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Application Information

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IPC IPC(8): F16F9/53F16F9/32
CPCF16F9/535F16F9/3207
Inventor 边宇枢胡江涛高志慧
Owner BEIHANG UNIV
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