A vibration isolator based on the parallel connection of positive and negative stiffness of magnetic attraction components and its control method
A positive and negative stiffness, vibration isolator technology, applied in the direction of vibration suppression adjustment, non-rotational vibration suppression, spring/shock absorber functional characteristics, etc., can solve the problem of low-frequency vibration is not very ideal, reduce the bearing capacity, and increase the static displacement and other issues to achieve the effect of low noise, improved stability and reliability, and small size
Active Publication Date: 2022-07-22
JIANGSU UNIV
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Problems solved by technology
[0002] With the development of science and technology, more and more precision instruments have been developed, and vibration is one of the important factors that cause failures. Traditional vibration isolators have a good isolation effect on medium and high frequency vibrations, but their effect on low frequency vibrations is not good. not ideal
Therefore, in order to make it perform better in low-frequency vibration isolation, the usual method is to reduce its stiffness to reduce its natural frequency, but this method will reduce its bearing capacity and increase its static displacement
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[0025] The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention and should not be construed as limiting the present invention.
[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "axial", The orientation or positional relationship indicated by "radial", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description , rather tha...
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The invention provides a vibration isolator based on a parallel connection of positive and negative stiffness of magnetic attractive components and a control method thereof, belonging to the technical field of vibration isolators. The vibration isolator of the present invention includes a torsion magnetic spring mechanism, a rack and pinion mechanism and an air spring. The rack and pinion mechanism and the torsion magnetic spring mechanism are combined together to form a negative stiffness mechanism. The negative stiffness of the negative stiffness mechanism is determined by the fixed strip permanent magnet and the rotating The moment created by the repulsive force between the bar-shaped permanent magnets is realized. The vibration isolator of the present invention reduces the number of parts as much as possible under the condition that the quasi-zero stiffness is ensured, the structure is compact, and the ECU is used to control the adjustable negative stiffness, so as to ensure the stability and reliability of the vibration isolator .
Description
technical field [0001] The invention belongs to the technical field of vibration isolators, and in particular relates to a vibration isolator based on the parallel connection of positive and negative stiffness of magnetic attraction components and a control method thereof. Background technique [0002] With the development of science and technology, more and more precision instruments have been developed, and vibration is one of the important factors that cause failures. The traditional vibration isolator has a good isolation effect on medium and high frequency vibration, but its effect on low frequency vibration is not good. Not ideal. Therefore, in order to make it perform better in low-frequency vibration isolation, the usual practice is to reduce its stiffness to reduce its natural frequency, but this approach will reduce its bearing capacity and make its static displacement larger. SUMMARY OF THE INVENTION [0003] In view of the deficiencies in the prior art, the pr...
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IPC IPC(8): F16F15/023F16F15/00F16F15/03
CPCF16F15/0232F16F15/002F16F15/03F16F2230/08F16F2230/18F16F2228/063
Inventor 徐兴魏勇泉江昕炜王峰施天玲刘欢陈雷马志祥
Owner JIANGSU UNIV