Frequency-expanding absorber based on intelligent stiffness element and controlling method thereof

A vibration absorber and stiffness technology, which is applied in the field of frequency extension vibration absorbers based on intelligent stiffness components and their control fields, can solve the problems of slow response speed of vibration absorbers, increase degrees of freedom, and changes in stiffness, and achieve a wide range of vibration reduction frequency bands. quality, the effect of eliminating formants

Active Publication Date: 2018-01-19
LUOYANG INST OF SCI & TECH
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main manifestations are: (1) The response speed of the vibration absorber is slow; (2) The stiffness of the elastic body type stiffness element changes or falls off due to vibration and wear; (3) It is easy to cause control divergence; formant

Method used

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  • Frequency-expanding absorber based on intelligent stiffness element and controlling method thereof
  • Frequency-expanding absorber based on intelligent stiffness element and controlling method thereof
  • Frequency-expanding absorber based on intelligent stiffness element and controlling method thereof

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Embodiment Construction

[0037] Such as figure 2 and image 3 As shown, an extension frequency vibration absorber based on an intelligent stiffness element of the present invention includes a vibration absorber body 1 and a control system.

[0038] The vibration absorber body 1 includes a ring-shaped high-permeability mounting seat 101, a magnetorheological elastomer 102 sleeved on the outer circumference of the high-permeability mounting seat 101, and a high-permeability magnetic vibration absorbing block sleeved on the outer circumference of the magnetorheological elastic body 102 103. The high-permeability mounting seat 101, the magnetorheological elastomer 102, and the high-permeability magnetic vibration absorber 103 are all cone-shaped with the same taper, which can effectively prevent the magnetorheological elastomer from being caused by vibration and friction during the operation of the vibration absorber body 1. 102 is worn and loosened or even falls off. The high-magnetic-permeability vibratio...

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Abstract

The invention relates to the field of vibration control, in particular to a frequency-expanding absorber based on an intelligent stiffness element and a controlling method thereof. The frequency-expanding absorber comprises an absorber body and a controlling system, the absorber body comprises a high conductive magnetic mounting seat, a magneto-rheological elastomer and a high conductive magneticvibration absorbing block which are mounted from inside to outside in a sleeving mode, and a central column for connecting a controlled system is arranged in the central position of the high conductive magnetic mounting seat; and one end of the central column is connected with the inner circumference of the high conductive magnetic mounting seat through a plurality of rib strips evenly distributedin the radial direction of the central column, and a magnet excitation coil is wound on any of the rib strips; and the controlling system comprises an accelerated sensor, a controller and a controllable direct-current power supply. The frequency-expanding absorber based on an intelligent stiffness element is fast in response, wide in vibration absorption frequency spectrum and effectively avoidsnew resonance phenomenon caused by introduction of the vibration absorber.

Description

Technical field [0001] The invention relates to the field of vibration control, in particular to an extension frequency vibration absorber based on an intelligent stiffness element and a control method thereof. Background technique [0002] The vibration absorber is widely used because of its stable performance and simple design. The working principle of the vibration absorber can be simplified to a two-degree-of-freedom vibration system, such as figure 1 As shown, the mass and stiffness of the controlled system are respectively, the mass and stiffness of the vibration absorber are respectively, the displacement of the controlled system under the simple harmonic excitation force is, the displacement of the vibration absorber is, and the kinematics equations can be known from the theory of vibration mechanics As formula 1: (1) [0003] The amplitude of the controlled system is: [0004] (2) [0005] According to formula (2), When When the amplitude of the controlled system is at ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F7/104F16F1/36
Inventor 宋伟志程广伟赵海军姚永玉房建峰周辉陈智勇李洲稷康翔宇
Owner LUOYANG INST OF SCI & TECH
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