Variable Rotation Equivalent Inertial Mass Damper

Abstract

The invention is a variable rotation equivalent inertial mass damper, which includes main energy-consuming elements, translation / rotation conversion device, speed change device, secondary energy-consuming elements, rotating mass, control chip and circuit, etc. Through the translation / rotation conversion device, the relative translation at both ends of the damper is converted into the high-speed rotation of the drive shaft; through the transmission device and the secondary energy-consuming components, the transmission ratio is controlled, which is the equivalent inertial mass; the main and secondary consumption are adjusted in real time. energy components to achieve the desired equivalent viscous damping value. The invention can adjust the equivalent inertial mass and viscous damping of the damper to the required optimal value in real time within a certain range; at the same time, it can realize the harvesting and storage of part of the vibration energy, so as to provide the electric energy required by part of the control circuit and the working status indicating device . According to preliminary analysis, the present invention can provide a modal damping ratio several times higher than that of traditional oil dampers, and can be applied (but not limited to) to buildings, bridges, bridge cables, vehicle vibration control, etc., 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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