A variable stiffness magnetorheological damper and its control method

A magnetorheological damper and variable stiffness technology, used in shock absorbers, shock absorbers, springs/shock absorbers, etc., which can solve the problems of difficult engineering applications, not an independent vibration damping device, and bulky system. , to increase the maximum output force and power adjustable coefficient, compact structure, and reduce the length of the damper

Active Publication Date: 2019-05-10
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Experiments show that this mechanism has the performance of variable stiffness and variable damping, but the system is bulky and not an independent damping device, so engineering application is very difficult

Method used

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  • A variable stiffness magnetorheological damper and its control method

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0023] Such as figure 1 As shown, a magneto-rheological damper with variable stiffness in this embodiment includes an inner damper 6 and an outer damper 5 that are movably connected inside and outside, and a spring 2; one end of the spring 2 is fixed on the support 1, The other end is fixed on the outer cylinder 8 of the outer damper 5; one end of the inner cylinder 10 of the inner damper 6 stretches into the cylinder of the outer cylinder 8 of the outer damper 5, and the inner cylinder 8 of the outer damper 5 The outer piston 11 is fixedly connected, and the other end of the inner cylinder 10 of the inner damper 6 is connected with an external load.

[0024] From the above, it can be known that the beneficial effect of the present invention is that the inner cylinder 10 of the inner damper 6 is used as the piston rod of the outer damper 5, an...

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Abstract

The invention relates to a variable stiffness magnetorheological damper and a control method thereof. The variable stiffness magnetorheological damper comprises an inner damper body and an outer damper body which are movably connected in an inner-outer mode and further comprises a spring. One end of the spring is fixed to a supporting seat, and the other end of the spring is fixed to an outer cylinder barrel of the outer damper body. One end of an inner cylinder barrel of the inner damper body extends into a cylinder body of the outer cylinder barrel of the outer damper body and is fixedly connected with an outer piston of the outer damper body, and the other end of the inner cylinder barrel of the inner damper body is connected with an outer load part. The variable stiffness magnetorheological damper and the control method thereof have the beneficial effects that the inner damper body and the outer damper body are combined, the outer piton and the inner cylinder barrel are integrated, and output force is formed by connecting two parts in parallel so that the maximum output force and power adjustable coefficient of the damper can be increased; and the structure is more compact, the length of the damper is greatly decreased, and the damper is suitable for more occasions with requirements for mounting spaces and damping occasions needing stiffness and damping force variation.

Description

technical field [0001] The invention relates to a control method of a magneto-rheological damper with variable stiffness. Background technique [0002] As a functional material, magnetorheological fluid (MRF) is reversible and controllable, and its thermal stability, wide operating temperature range, and fast response can fully meet the requirements of engineering applications. Therefore, magnetic Rheological fluids are widely used in the research of new mechanical devices, such as clutches, brakes, shock absorbers, polishing devices, etc., and have good application prospects in the fields of vehicle engineering, mechanical engineering, civil engineering, and aerospace. [0003] Magneto-rheological fluid dampers are the most concentrated and fastest-growing application fields of MRF research. The magnetorheological damper is to control the viscosity of the damping fluid in the damper by controlling the rheological characteristics of the magnetorheological fluid, thereby con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16F13/30
CPCF16F13/305
Inventor 黄惠钱景章志超陈淑梅杜恒
Owner FUZHOU UNIV
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