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A High Linearity Electromagnetic Semi-Active Vibration Absorber

A highly linear, electromagnetic technology, applied in the direction of shock absorbers, magnetic springs, springs/shock absorbers, etc., to achieve the effect of wide linear area and reduced possibility of fracture

Active Publication Date: 2018-08-17
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the problem of additional nonlinear stiffness brought about by its magnetic pull remains unresolved

Method used

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  • A High Linearity Electromagnetic Semi-Active Vibration Absorber
  • A High Linearity Electromagnetic Semi-Active Vibration Absorber
  • A High Linearity Electromagnetic Semi-Active Vibration Absorber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1: Combining Figure 1~2 , The electromagnetic semi-active vibration absorber of the present invention mainly includes an upper end cover 13, a magnetically conductive outer cylinder 14, an armature 05, a central shaft 07, a lower end cover 03 and the like. The magnetically conductive outer cylinder 14 is respectively connected with the upper end cover 13 and the lower end cover 03 through the hexagon socket bolt 09 and the hexagon socket bolt 17 to form the outer shell of the vibration absorber of the present invention. As a vibration-absorbing mass, the armature 05 is connected to the upper end cover 13 and the lower end cover 03 through the first mechanical spring 11 and the second mechanical spring 04 respectively, and the connecting parts of the armature and the springs are designed with installation grooves or positioning discs 16 . The central shaft 07 passes through the upper end cover 13 and the armature 05 successively from top to bottom, and finally i...

Embodiment 2

[0020] Embodiment 2: Based on the implementation case 1: the tooth width of the armature ring gear of the present invention is not equal to the tooth width of the magnetically permeable outer cylinder, but satisfies a specific proportional relationship, which is the key to the realization of high linearity in the present invention .

[0021] Figure 3(a) and Figure 3(b) are comparison diagrams between the magnetic tooth structure of the present invention and the traditional magnetic tooth structure, wherein Figure 3(a) and Figure 3(b) respectively represent the unequal width magnetic teeth proposed by the present invention structure and the traditional equal-width magnetic tooth structure. It can be seen from the figure that in the present invention, the tooth width of the ring gear of the magnetically conductive outer cylinder 14 is not equal to the tooth width of the ring gear of the armature 05, but the former is larger than the latter and satisfies a certain proportional re...

Embodiment 3

[0028] Embodiment 3: Based on the above embodiment, the present invention can also be: a second mechanical spring is installed between the armature and the lower end cover, and the number of the second mechanical springs is four.

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Abstract

The invention provides a high-linearity electromagnetic type semi-active vibration absorber. The high-linearity electromagnetic type semi-active vibration absorber comprises a magnetic conductive outer barrel, an upper end cover, a lower end cover, an armature and a central shaft, wherein the upper end cover and the lower end cover are mounted at the two ends of the magnetic conductive outer barrel correspondingly; and the armature and the central shaft are arranged in the magnetic conductive outer barrel. The inner surface of the magnetic conductive outer barrel and the outer surface of the armature are provided with gear rings. A first spring is arranged between the upper end of the armature and the upper end cover, and a second spring is arranged between the lower end of the armature and the lower end cover. The central shaft sequentially penetrates through the upper end cover and the armature from top to bottom and then is fixedly connected with the lower end cover through an inside hexagonal bolt. A linear bearing is arranged between the central shaft and the armature. A groove is formed in the middle of the armature. A coil is wound in the groove. A wire of the coil penetrates through a wire hole formed in the armature, then bypasses the central shaft, and extends out of the lower end cover along a wiring trough formed in the lower end cover. The vibration absorber has quite high linearity, and the linearity range of the vibration absorber is wider through achievement of high-linearity electromagnetic stiffness, so that the allowable stroke of the armature of the vibration absorber is increased.

Description

technical field [0001] The invention relates to a vibration absorber, in particular to a high-linearity electromagnetic semi-active vibration absorber, which belongs to the field of vibration control. Background technique [0002] The electromagnetic semi-active vibration absorber is a semi-active vibration absorber whose frequency can be adjusted within a certain range. The purpose of frequency control. Compared with other types of semi-active vibration isolators, it has the advantages of compact structure, convenient installation, and rapid tuning ([1] Feng Xiaoxiao. Design and experimental research on electromagnetic semi-active vibration absorbers [D]. Harbin Engineering University, 2013). However, the electromagnetic stiffness generated by the electromagnetic semi-active vibration isolator is only linear in a small range on both sides of the static equilibrium position. When the mover deviates from the equilibrium position slightly, it will produce strong nonlinearity....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16F6/00
CPCF16F6/00F16F2222/06
Inventor 刘学广韩超吴牧云
Owner HARBIN ENG UNIV
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