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Electromagnetic Negative Stiffness Vibration Isolation System Based on Piezoelectric Self-Power Supply and Its Control Method

A vibration isolation system, negative stiffness technology, applied in vibration suppression adjustment, spring/shock absorber, mechanical equipment, etc., can solve the problem of unsatisfactory isolation of low frequency and ultra-low frequency vibration, achieve good vibration attenuation effect, reduce resonance Peak value, good vibration isolation effect

Active Publication Date: 2020-10-16
CHONGQING UNIV +1
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  • Description
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Problems solved by technology

It can meet the production requirements in general industrial occasions, but the effect of isolating low-frequency and ultra-low-frequency vibrations is not ideal

Method used

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  • Electromagnetic Negative Stiffness Vibration Isolation System Based on Piezoelectric Self-Power Supply and Its Control Method
  • Electromagnetic Negative Stiffness Vibration Isolation System Based on Piezoelectric Self-Power Supply and Its Control Method
  • Electromagnetic Negative Stiffness Vibration Isolation System Based on Piezoelectric Self-Power Supply and Its Control Method

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Embodiment Construction

[0031]The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0032] The purpose of the present invention is to provide an electromagnetic negative stiffness vibration isolation system based on piezoelectric self-power supply and its control method, which can effectively reduce the natural frequency of the system, not only has a good vibration isolation effect on high-frequency vibration interference, but also can effectively Isolate the low-frequency vibration of the foundation and the environment, adopt self-powered clos...

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Abstract

The invention discloses an electromagnetic negative stiffness vibration isolation system based on piezoelectric self-power supply and a control method thereof, and relates to the technical field of vibration suppression. The electromagnetic negative stiffness vibration isolation system based on piezoelectric self-power supply comprises a base, a cylinder, an electromagnetic negative stiffness assembly, a fixing base, a piezoelectric energy capture assembly, a load platform and a circuit system; the lower end of the electromagnetic negative stiffness assembly is connected with the base, the upper end of the electromagnetic negative stiffness assembly extends out of the upper surface of the fixing base, the piezoelectric energy capture assembly is fixed at the upper end of the electromagnetic negative stiffness assembly, and the load platform is arranged at the upper end of the piezoelectric energy capture assembly; and the piezoelectric energy capture assembly is connected with the input end of a rectifying circuit, the output end of a control circuit is connected with the electromagnetic negative stiffness assembly, and a rechargeable battery is used for supplying power to the rectifying circuit, a DC-DC voltage conversion circuit, an energy storage circuit and the control circuit. The system can effectively reduce the natural frequency of the system, not only has a good vibration isolation effect on high-frequency vibration interference, but also can effectively isolate low-frequency vibration of a foundation and the environment, and has the characteristics of self-power collection, power storage and power supply.

Description

technical field [0001] The invention relates to the technical field of vibration suppression, in particular to an electromagnetic negative stiffness vibration isolation system based on piezoelectric self-power supply and a control method thereof. Background technique [0002] With the continuous development of precision engineering technology, in the research fields of precision machining, precision measurement and space microgravity, more and more strict requirements are put forward for the isolation of external broadband environmental vibration. The traditional vibration isolation system mainly uses the spring and damper structure with fixed parameters to complete the vibration reduction of the controlled object, which has the characteristics of simple structure, reliable operation, and independent of power supply. It can meet the production requirements in general industrial occasions, but the effect of isolating low-frequency and ultra-low-frequency vibrations is not ide...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16F15/00
CPCF16F15/002F16F15/007
Inventor 罗均何文元蒲华燕王敏孙翊段超群张顺琦彭艳谢少荣
Owner CHONGQING UNIV
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