A self-sensing nonlinear quasi-zero stiffness electromagnetic vibration isolator

Abstract

The invention relates to the technical field of vibration isolators and aims at providing a self-sensing nonlinear quasi-zero stiffness electromagnetic vibration isolator. By the adoption of the device, vertical vibration is reduced. According to the technical scheme, the self-sensing nonlinear quasi-zero stiffness electromagnetic vibration isolator is characterized by comprising an upper workingdevice and a lower working device; the upper working device comprises a rectangular upper bottom plate, a rectangular middle plate, a first spring vibration device, four first rectangular magnets, four second rectangular magnets correspondingly fixed to the lower ends of the first rectangular magnets, three upper coil supports and three upper coils correspondingly fixed into the upper coil supports; and the lower working device comprises a rectangular middle plate, a rectangular lower bottom plate, four second spring vibration devices, a circular piezoelectric stack third outer sleeve, a magnet fixing device, four third rectangular magnets, an inner sleeve, four fourth rectangular magnets, lower coil supports and four lower coils.

Description

technical field [0001] The invention relates to the technical field of vibration isolators, in particular to a self-sensing nonlinear quasi-zero-stiffness electromagnetic vibration isolator. Background technique [0002] In high-tech fields such as aerospace and aviation and ship engineering, mechanical structures have higher and higher requirements for vibration response, and the usual method is to use vibration isolators. Passive isolators operate at frequencies greater than complete vibration isolation. Therefore, continuously reducing the frequency of the vibration isolator and expanding the vibration isolation bandwidth is a research hotspot in this field. Most of the existing vibration isolators have small bearing capacity, large deformation space, and single structural form; traditional vibration isolators are mostly constructed with passive springs, so the function is single, the efficiency is low, and the structural stiffness of the vibration isolator cannot be c...

AI Technical Summary

Problems solved by technology

Most of the existing vibration isolators have small bearing capacity, large deformation space, and single structural form; traditional vibration isolators are mostly constructed with passive springs, so the function is single, the efficiency is low, and the structural stiffness of the vibration isolator cannot be changed, and the robustness is relatively low. Low

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