Self-perception, self-power supply and adaptive control magnetorheological vibration damping system

Abstract

The invention relates to a self-perception, self-power supply and adaptive control magnetorheological vibration damping system, which consists of a dual-extension lever magnetorheological absorber, a vibration energy acquisition device, an energy storage and management module, a status self-perception module and an adaptive control system, wherein the vibration energy acquisition device, the energy storage and management module, the status self-perception module, the adaptive control system and the magnetorheological absorber are integrated; mechanical energy of the system is converted into electric energy by the energy acquisition device; the electric energy is stored and managed by the energy storage and management module so as to supply power to a sensor, a controller and the magnetorheological absorber; the perception of the operating state of the magnetorheological dapmper is realized by the status self-perception module so as to provide decision basis for an adaptive controller;and the adaptive controller regulates the operating damping force of a magnetorheological damper in an adaptive mode according to the operating state of the magnetorheological absorber, so that the adaptive control of the self-perception status and self-supply energy of the magnetorheological absorber is realized, and the application field of the magnetorheological absorber is expanded greatly.

Description

Technical field [0001] The invention belongs to a new energy collection and application system, in particular to a self-sensing self-powered adaptive control magnetorheological vibration damping system. Background technique [0002] As an intelligent damping device, magnetorheological damper has the advantages of simple structure, small size, low energy consumption, and continuously adjustable damping. It has gradually become a research and application hotspot in the field of structural vibration control. The current magnetorheological damper system requires a special sensing system to realize the perception of the working state, which will undoubtedly lead to an increase in the cost of the system. In addition, the magnetorheological damper requires an adjustable magnetic field excitation, which requires the input of external electrical energy. In some remote areas, electricity is often not delivered; and sometimes even if electricity can be delivered, it is often due to nature. ...

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Problems solved by technology

The U.S. patent (US20080053763) proposes a permanent magnet moving iron principle structure, which uses the permanent magnet on the spring vibrator to cut the magnetic force line up and down to generate induced electromotive force to supply power to the magnetorheological damper. Due to the large size and low energy conversion efficiency of this solution , it is difficult to integrate into the magnetorheological damper, it is difficult to provide enough electric energy for the magnetorheological damper to work, and the patent has not yet involved energy storage and management

Chinese patent (CN200710034309.2) proposes a self-supplied electromagnetic rheological intelligent damping system, which uses a rack and pinion drive arranged outside the shock absorber to drive a DC generator to generate power for the magnetorheological shock absorber , its limitations are very obvious. Since the power generation device is arranged outside the shock absorber and exposed to the outside, the resulting system is bulky and has high requirements for the working environment

Chinese patent (CN200710034309.2) proposes a multi-blade disc-shaped electromagnetic mechanical energy harvester, which is arranged inside the shock absorber and has certain limitations. Because the magnetorheological fluid is relatively thick, the speed of the blades is relatively high. Slow, the generated electric energy can only supply power to the sensor, and cannot realize the state perception of the shock absorber itself

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