Semi-active vibration control eddy current damper

An eddy current damper and vibration control technology, applied in springs/shock absorbers, springs, magnetic springs, etc., can solve the problems of complex active control technology, difficult maintenance, and small application range, and achieve less external energy and external energy. Low energy and stable physical properties

Active Publication Date: 2016-10-12
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the complex active control technology, high cost and difficult maintenance, its application range is relatively small.

Method used

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  • Semi-active vibration control eddy current damper
  • Semi-active vibration control eddy current damper
  • Semi-active vibration control eddy current damper

Examples

Experimental program
Comparison scheme
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Embodiment

[0033] An embodiment of a semi-active vibration control eddy current damper such as figure 2 As shown, it consists of a magnetic field shield, an eddy current energy dissipation module, a buffer spring, an automatic control module and various connecting components. Wherein the magnetic field shielding cover is a rectangular closed shell, including the first support plate 1A, the second support plate 1B and the bottom plate, made of soft iron material with high magnetic permeability, wherein the center of the second support plate 1B is opened There is a circular hole for installing the linear bearing 6. The eddy current energy dissipation module includes an electric permanent magnet and an energy dissipation copper plate 3 . The electro-permanent magnets include the first electro-permanent magnet 2A and the second electro-permanent magnet 2B, which are installed on the first support plate 1A and the base plate according to the law, and the electro-permanent magnets are instal...

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PUM

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Abstract

The invention discloses a semi-active vibration control eddy current damper which is used for inhibiting structure vibration. The semi-active vibration control eddy current damper comprises an eddy current energy consumption module, an automatic control module, a magnetic shielding case, a buffer spring and connecting parts. The eddy current energy consumption module comprises an array electro-permanent magnet and a copper plate. The automatic control module comprises an external power supply, a vibration switch and a resistive transducer. The magnetic shielding case is a rectangular closed housing made of soft iron with relatively large magnetic conductivity. When a structure vibrates, the vibration switch is switched on, an automatic control circuit is closed, and meanwhile the copper plate begins to perform magnetic induction line cutting motion to generate eddy current energy consumption; the magnitude of current in the circuit is changed along with the intensity of vibration, so that the magnetic field intensity is changed further, the effect of actively adjusting a damping factor is realized, the damper can keep a relatively high efficiency under different intensity of vibration, and the semi-active vibration control is realized. The semi-active vibration control eddy current damper has the characteristics of being simple in device, variable in damping, and very small in mechanical friction, thereby having a wide application prospect in the field of structure vibration control.

Description

technical field [0001] The invention relates to a semi-active control device for energy consumption and vibration reduction, in particular to a semi-active vibration control eddy current damper, which belongs to the field of structural vibration control. It is used to suppress the vibration response of structures under external loads such as earthquakes, wind, and vehicles. Background technique [0002] Vibration control in the field of civil engineering can generally be divided into two categories: active control and passive control according to the presence or absence of external energy input, as well as semi-active control and hybrid control formed by the combination of these two control methods. The commonly used passive control methods are: foundation vibration isolation, energy dissipation component vibration reduction system, energy dissipation device vibration reduction and vibration absorber vibration reduction. The main control methods of structural active control...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F6/00
CPCF16F6/00
Inventor 谢发祥魏永建陈欣吉伯海陈林
Owner HOHAI UNIV
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