A Structurally Coupled Intelligent Orthogonal Active-Passive Joint Metamaterial Vibration Isolation Method

Abstract

The invention discloses a structure-coupling intelligent orthogonal active-passive combined metamaterial vibration isolation method, which belongs to the cross field of metamaterial, vibration reduction and noise reduction and active control technologies. This method uses the periodically arranged structure of metamaterial vibration isolation, and sets the transverse actuator in the direction perpendicular to the main bearing direction of the periodic hole structure. Combined with the sensing signal of the vibration source and the base, the intelligent control actuator Static and dynamic loads are applied in the lateral direction to implement active vibration isolation while adjusting the stiffness of the metamaterial vibration isolator. In this method, through active and passive joint vibration isolation of passive vibration isolation performance control and active motion, the vibration source is simultaneously optimized for line spectrum and wide frequency spectrum vibration control, the vibration transmission of the vibration source is minimized, and the active motion is directly The direction of action is perpendicular to the direction of vibration, which can improve system stability and reduce secondary excitation.

Description

technical field [0001] The invention relates to a structural coupling intelligent orthogonal active-passive combined metamaterial vibration isolation method, which belongs to the technical field of metamaterials and vibration reduction and noise reduction. Background technique [0002] With the improvement of the level of science and technology, the isolation of equipment vibration and noise must meet the need to reduce the overall vibration level of broadband on the one hand, and also consider peak clipping of the line spectrum on the other hand. The metamaterial vibration isolator is a kind of vibration isolator designed by metamaterial technology. By designing the ordered structure on the key physical dimensions of the material, its mechanical properties have a broad design space, and it can be used in wide-spectrum vibration isolation applications. Has great potential. The more important feature is that its stiffness can be controlled by external environmental condition...

AI Technical Summary

Problems solved by technology

For the active control of active vibration isolation of electromechanical equipment, the current technical means rely on the preset model, the number of controlled line spectra is small, and there are phenomena such as secondary noise and line spectrum energy transfer. The overall effect is not impressive. satisfy

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