Self-adaption electrorheological fluid damper with self-induction power supply function

Abstract

The invention discloses a self-adaption electrorheological fluid damper with a self-induction power supply function. The damper is composed of a force part, an electromagnetic part, a damping part, apackaging part and a compensation air chamber part, wherein the force part, the electromagnetic part and the damping part are connected up and down sequentially; an inner electrode is connected with adamping inner cylinder, and an outer electrode is connected with a damping outer cylinder; and a damping channel is formed between the inner electrode and the outer electrode, and small holes are formed at the upper portion and the lower portion of the inner electrode for the reflux and the damping generation of electrorheological fluid. When a piston rod is subjected to external vibration, a permanent magnet mounted on the piston rod moves with the piston rod, and coils fill the inner wall of the damping cylinder; when the permanent magnet moves up and down, the coils cut magnetic inductionlines to generate induced voltage; the induced voltage is connected to the inner electrode and the outer electrode to improve the viscosity of ER fluid, so that the vibration of a piston is reduced; and the vibration of the piston is faster, the voltage generated by the induction coils is greater, and the resistance generated by the ER fluid is greater, so that the purpose of self-adaption vibration reduction of the system is achieved. The self-adaption electrorheological fluid damper with the self-induction power supply function leaves out an external power supply and a control system.

Description

Technical field [0001] The invention relates to an electrorheological fluid damper device, which does not require an external power source during operation, and is an intelligent damper capable of adaptively damping vibration with the external vibration frequency. Background technique [0002] Electrorheological fluids (ER fluids) are smart materials, which are generally formed by micron (or nanometer)-scale particles with high dielectric constant uniformly dispersed in an insulating oil phase medium with low dielectric constant suspension. When an external electric field is applied, the ER fluid changes from a flowing state to a solid-like state, and its apparent viscosity increases sharply by several orders of magnitude, and reaches a higher shear stress. The process is reversible, controllable, rapid and low power consumption. These excellent electromechanical coupling properties enable ER fluid to effectively solve energy transfer and control problems in mechanical engineer...

AI Technical Summary

Problems solved by technology

The above two kinds of dampers have their own defects, so that the application is limited

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