Inertia mass tuning electromagnetic damper

Abstract

The invention belongs to the field of dampers and discloses an inertia mass tuning electromagnetic damper. The inertia mass tuning electromagnetic damper comprises a shell, a linear guide rail, a ballscrew mechanism, a fixing base, an accelerator, a direct-current generator, a mass block and tuning compression springs, wherein the linear guide rail, the ball screw mechanism, the fixing base, theaccelerator, the direct-current generator, the mass block and the tuning compression spring are arranged in the shell; a right end cover is movably provided with an external connection frame, the leftend of the external connection frame penetrates through the right end cover and then extends into the shell, and the left end of the external connection frame is fixedly connected to a ball nut; theleft end of a lead screw is connected with an input shaft of the accelerator through a first coupler, and an output shaft of the accelerator is connected with the direct-current generator through a second coupler; and the two tuning compression springs are both installed on the lead screw in a penetrating mode. The inertia mass tuning electromagnetic damper can convert energy generated by an external vibrating mechanism due to vibration into movement kinetic energy of the mass block as well as electric energy of the direct-current generator to be greatly consumed, thereby achieving the vibration reduction/shock absorption effect.

Description

technical field [0001] The invention belongs to the field of dampers, and more specifically relates to an electromagnetic damper. Background technique [0002] In recent years, the excellent vibration damping performance of tuned mass damper (TMD) and tuned liquid damper (TLD) has attracted extensive attention from the engineering community. Its main principle is to set a certain mass in the controlled structure, and add a certain stiffness and damping to form an auxiliary structure with a natural frequency. By adjusting the natural frequency of the auxiliary structure to make it close to the frequency of the controlled structure, it forms a resonance condition with the controlled structure, absorbs the vibration energy of the controlled structure and dissipates it through the damping element, so as to achieve the vibration reduction effect. [0003] The damping performance of traditional tuned mass damper (TMD) and its own mass are related to the mass ratio of the controll...

AI Technical Summary

Problems solved by technology

[0003] The damping performance of traditional tuned mass damper (TMD) and its own mass are related to the mass ratio of the controlled structure, but due to factors such as installation space, its design quality is often limited to a limited range

In order to achieve the ideal control effect, when using a tuned mass damper for structural vibration control, a large installation and movement space is usually required; but this often takes up the use space of the structure and has a certain impact on the use function of the structure

In addition, the mass of the controlled structure in actual engineering is usually huge, and correspondingly, the mass of the tuned mass damper used is also very large, which will increase the vertical load of the structure and occupy a large structural space

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