Variable rotating equivalent inertia mass damper

Abstract

The invention relates to a variable rotating equivalent inertia mass damper which comprises a primary energy consumption element, a horizontal moving / rotating conversion device, a speed changing device, a secondary energy consumption element, a rotating mass unit, a control chip, circuits and the like. Through the horizontal moving / rotating conversion device, relative horizontal movement at the two ends of the damper is converted into high-speed rotation of a transmission shaft; through the speed changing device and the secondary energy consumption element, the transmission ratio, namely equivalent inertia mass is controlled; the primary energy consumption element and the secondary energy consumption element are adjusted in real time so that a needed equivalent viscous damping value can be reached. According to the variable rotating equivalent inertia mass damper, the equivalent inertia mass and viscous damping of the damper can be adjusted in real time to reach the needed optimum values; meanwhile, harvesting and storing of part of vibration energy are achieved so that part of electric energy needed by the control circuit and a working state indicating device can be provided. Through preliminary analysis, the modal damping ratio which is multiple times that of a traditional oil damper can be provided, and the variable rotating equivalent inertia mass damper can be applied to (but not limited to) vibration control of buildings, bridges, bridge cables, vehicles and the like and has good engineering application prospects.

Description

technical field [0001] The invention relates to a variable rotation equivalent inertial mass damper, which belongs to the technical field of energy dissipation and vibration reduction of engineering structures. Background technique [0002] When the structural system is excited by external dynamic loads, the traditional structural system consumes input energy through nonlinear deformation and damage; the structural system with dampers and other energy-dissipating and shock-absorbing devices can consume part of the input energy through the damper, and the damper’s The energy consumption is positively related to the relative displacement / velocity of its two ends. However, the traditional damper, due to its certain positive stiffness, will prevent the relative displacement / velocity at both ends of the damper to a certain extent. At the same time, some studies have pointed out that the advantage of the semi-active control damper comes from the fact that its control algorithm ca...

AI Technical Summary

Problems solved by technology

But the traditional damper, due to its certain positive stiffness, will prevent the relative displacement / velocity at both ends of the damper to a certain extent

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