Intelligent vibration absorption device combining passive damping with active damping

Abstract

The invention relates to a preparation method of an intelligent vibration absorption device combining passive damping with active damping. In the preparation method, part of mechanical energy is absorbed by utilizing a damping material in the passive damping; an active damping intelligent structure which is based on a piezoelectric effect and consists of a sensor, a driver, a collection card, a controller, a driving power supply and a real-time control system is utilized in the active damping; the effective control on vibration is realized, wherein the sensor and the driver are adhered onto the surface of a passive damping material and are connected with the controller; the sensor is connected with the collection card; the driver is connected with the driving power supply; and the collection card, the driving power supply and the controller are connected with the real-time control system. The device comprises the following preparation steps of: preparing in a prior period, manufacturing a molded passive damping material, adhering and constructing the active damping intelligent structure, and adhering the side of the passive damping material, which is not adhered to a piezoelectric ceramic, to a position which needs vibration absorption. By using the intelligent vibration absorption device, the intelligent control on the vibration generated when various machines run can be realized, and the vibration absorption effect is enhanced.

Description

technical field [0001] The invention relates to the material science and the technical fields of electronics, communication and automatic control, in particular to an intelligent vibration damping device combining passive damping and active damping. Background technique [0002] During the operation of various types of machinery, due to the loosening or damage of some parts, the unbalance of the rotating parts, the resonance and other reasons, the occurrence of vibration is inevitably caused. Vibration will bring huge harm to the machine, such as the destruction of the internal structure, the decline of the running accuracy, the generation of noise, etc., so the problem of vibration reduction during the operation of the machine is becoming more and more important. [0003] Damping material is a functional material that can absorb vibrational mechanical energy and convert it into thermal energy, electrical energy, magnetic energy or other forms of energy and lose it. Accordi...

AI Technical Summary

Problems solved by technology

[0006] However, the disadvantages of the active damping smart structure are: it is basically realized through active control of structural vibration or external mechanical force, and the suppression of structural vibration requires sufficient energy from the outside world, and the structure of the system is complex, and the misoperation of the control system hardware ( or failure) can sometimes cause the system to completely lose active damping

Passive damping relies on the properties of the damping material itself, so the damping performance has certain limitations.

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