A magnetorheological damper with integrated energy recovery device

Abstract

The invention discloses a magneto-rheological damper of an integrated energy recovery device. The magneto-rheological damper is composed of an energy recovery device, an upper end cover, a lower end cover, an outer sleeve, a piston rod and the like. The energy recovery device is arranged in a cavity of the piston rod, and eight permanent magnets and eight partition pieces are fixed to a support rod through a holding pin and a fastening pin. Up-and-down motions of the piston rod drive an induction coil winding frame to conduct reciprocating motions. Under the action of the permanent magnets, an induction coil which is wound on the induction coil winding frame generates alternating currents, after the alternating current is converted into direct currents through a rectifying circuit, the direct current can be directly used for direct current supply of an exciting coil in a piston winding groove, and damping force can be generated; in addition, the converted direct current can be stored in a storage circuit, and energy harvesting of vibrating mechanical energy can be achieved. The energy harvesting and the damping force can be controlled to be a whole, space is used reasonably, the whole structure of the damper is compact, and the device is particularly suitable for being applied to a semi-automatic shock mitigation system under special circumstances such as outage.

Description

technical field [0001] The invention relates to a magnetorheological damper, in particular to a magnetorheological damper integrated with an energy recovery device. Background technique [0002] The magnetorheological damper is a new type of intelligent damping device widely used in semi-active control systems. It mainly applies a certain amount of current to the excitation coil in the winding groove of the damper piston to generate a magnetic field to change the yield strength of the magnetorheological fluid flowing through the liquid flow channel, thereby dynamically changing the output damping force. [0003] The characteristics of millisecond-level response speed, large control range and large damping force output of the magneto-rheological damper make it an excellent semi-active actuator in the field of industrial applications. At present, magnetorheological dampers have been widely used in vibration reduction and anti-seismic systems of buildings and bridges, and vibr...

AI Technical Summary

Problems solved by technology

However, this structure also has certain limitations. Due to the relatively thick magnetorheological fluid, the speed of the blade is relatively slow, and the generated electric energy is not enough to supply power to the excitation coil in the damper.

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