A Flexible Adjustable Quasi-Zero Stiffness Damping Platform

Abstract

The invention discloses a flexibly adjustable quasi-zero rigidity vibration attenuation platform. The flexibly adjustable quasi-zero rigidity vibration attenuation platform comprises a fixed platform, a moving platform, a vibration attenuation component and thrust components, wherein the vibration attenuation component is connected with the fixed platform and the moving platform; the thrust components are arranged on the fixed platform and used for exerting a thrust force on the moving platform; the multiple thrust components are arranged around the moving platform. According to the flexibly adjustable quasi-zero rigidity vibration attenuation platform, quasi-zero rigidity in a static balance position and nonlinearity rigidity nearby a static balance position of the vibration attenuation platform can be achieved; the problem of failure in low frequency or ultra-low frequency vibration isolation in terms of traditional linear vibration isolation systems can be solved; inherent contradictions which restrict the traditional vibration isolation systems can be eliminated; problems in low frequency vibration transmission rate and high frequency vibration attenuation rate can be solved.

Description

technical field [0001] The invention belongs to the technical field of mechanical engineering, relates to vibration reduction and vibration isolation technology in mechanical engineering, in particular to a vibration reduction platform with quasi-zero stiffness. Background technique [0002] According to the vibration theory, the initial vibration isolation frequency of the traditional passive vibration isolation system is the natural frequency of the system itself. times. If you want to achieve low-frequency, ultra-low-frequency and wide-frequency vibration isolation in the range of 0.5-70Hz, you can only reduce the natural frequency of the system itself, but the natural frequency of the system is related to the stiffness, and reducing the natural frequency requires reducing the system stiffness. The low stiffness of the system will lead to the increase of the deformation of the elastic elements, resulting in the weakening of the bearing capacity of the system and the eme...

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Problems solved by technology

The low stiffness of the system will lead to increased deformation of the elastic elements, resulting in weakened system load capacity and new contradictions

At the same time, due to the needs of production development and scientific experiments, precision mechanical systems have higher and higher requirements for limiting vibration interference. In order to improve precision, the stiffness can only be increased, but the increase in stiffness will also increase the natural frequency of the system, which is not conducive to Vibration isolation in the range of times the natural frequency of the system

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