Semi-active vibration control eddy current damper

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...

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.

Images