A Frequency Extended Vibration Absorber Based on Intelligent Stiffness Components and Its Control Method

A vibration absorber and stiffness technology, which is applied in the frequency extension vibration absorber and its control field based on intelligent stiffness components, can solve the problems of slow response speed of vibration absorber, increase of degree of freedom, stiffness change, etc., and achieve wide vibration reduction frequency range, lighten Quality, the effect of eliminating formants

Active Publication Date: 2019-08-30
LUOYANG INST OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • 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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  • A Frequency Extended Vibration Absorber Based on Intelligent Stiffness Components and Its Control Method
  • A Frequency Extended Vibration Absorber Based on Intelligent Stiffness Components and Its Control Method
  • A Frequency Extended Vibration Absorber Based on Intelligent Stiffness Components and Its Control Method

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Embodiment Construction

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

[0038] The shock absorber body 1 includes a circular high-permeability mount 101, a magnetorheological elastomer 102 set on the outer circumference of the high-permeability mount 101, and a high-permeability vibration-absorbing block set on the outer circumference of the magnetorheological elastomer 102 103, the high magnetic permeability mounting seat 101, the magnetorheological elastomer 102 and the high magnetic permeability vibration absorbing block 103 are all conical rings with the same taper, which can effectively prevent the magnetorheological elastomer due to vibration and friction during the working process of the vibration absorber body 1. 102 wear and loose or even fall off. The high-permeability vibration-absorbing block 103 is made of high-permeabi...

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Abstract

The invention relates to the field of vibration control, in particular to a frequency extension vibration absorber based on an intelligent stiffness element and a control method thereof. Including the vibration absorber body and the control system, the vibration absorber body includes a high magnetic permeability mounting seat, a magnetorheological elastomer and a high magnetic permeability vibration absorbing block that are sequentially fitted from the inside to the outside. The central column of the control system, one end of the central column is connected to the inner circumference of the high magnetic permeability mounting seat through a plurality of ribs uniformly distributed radially along the central column, and an excitation coil is wound on any rib; the control system includes Acceleration sensor, controller and controllable DC power supply. The invention has fast response speed, wide vibration absorption spectrum and effectively avoids new resonance phenomenon of the controlled system due to the introduction of the vibration absorber.

Description

technical field [0001] The invention relates to the field of vibration control, in particular to a frequency extension vibration absorber based on an intelligent stiffness element and a control method thereof. Background technique [0002] Vibration absorbers are widely used because of their stable performance and simple design. The working principle of the vibration absorber can be simplified as a two-degree-of-freedom vibration system, specifically 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 action of the simple harmonic excitation force is , and the displacement of the vibration absorber is , and the kinematic equation is known from the theory of vibration mechanics Such as formula 1: (1) [0003] The amplitude of the controlled system obtained by solving is: [0004] (2) [0005] From formula (2),...

Claims

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Application Information

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Patent Type & Authority Patents(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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