Intelligent vibration absorption device combining passive damping with active damping

An intelligent vibration reduction and passive damping technology, applied in the fields of communication and automatic control, materials science and electronics, can solve the problems of loss of active damping effect of the system, complex system structure, limited damping performance, etc., to achieve obvious vibration reduction effect and flexible application. , make up for easily damaged effects

Inactive Publication Date: 2012-10-03
WUHAN UNIV OF TECH
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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 stru

Method used

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  • Intelligent vibration absorption device combining passive damping with active damping

Examples

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Embodiment 1

[0030] Example 1: Intelligent vibration damping device combining passive damping and active damping

[0031] see figure 1 , In this device, passive damping material 1 (passive damping for short) uses damping material to absorb part of the mechanical energy, and active damping uses an active damping intelligent structure based on piezoelectric effect to achieve effective vibration control. The active damping intelligent structure is composed of The sensor, driver, acquisition card, controller, driving power supply and real-time control system are composed of: the sensor and the driver are bonded to the surface of the passive damping material and connected with the controller; the sensor is connected with the acquisition card, and the driver is connected with the driving power supply Connection, the acquisition card, drive power and controller are connected with the real-time control system.

[0032] The passive damping material can be a polymer-based damping material or a high...

Embodiment 2

[0036] Embodiment 2: Preparation method of intelligent vibration damping device

[0037] The intelligent vibration damping device is an intelligent vibration damping device combining passive damping and active damping described in Embodiment 1, and its preparation adopts the method of the following steps:

[0038] (1) Preliminary preparation: According to the frequency and amplitude of external vibration, determine the type of passive damping material, the number of piezoelectric ceramics and the control parameters of the controller.

[0039] (2) Formed passive damping material: Paste the passive damping material 1 on the surface of the part to be vibration controlled by adhesive or welding. The adhesive can be epoxy resin super glue, 101 glue, XY401 glue Wait. (The type of adhesive may not be limited, as long as it is applicable)

[0040] (3) Paste: use a plurality of piezoelectric ceramic sheets 2 as sensors or drivers respectively, and then paste the piezoelectric ceramic...

Embodiment 3

[0044] Example 3: An application of intelligent vibration damping device in mechanical vibration damping

[0045] The device is an intelligent vibration damping device combining passive damping and active damping described in Embodiment 1, and its application in automobile vibration reduction. When applied, the intelligent vibration damping device is placed on both sides of the engine, and by adjusting the PID control parameters of the controller, the vehicle vibration damping can achieve the control effect.

[0046]During the operation of the car, the faster the speed, the higher the vibration frequency. When the speed reaches a certain value, the car will produce obvious vibration. According to the vibration signal generated when the Volkswagen Passat engine is running, the rigid foam made of hollow microbeads filled with epoxy resin is selected as the passive damping material, and the volume fraction of hollow microbeads is 40%. Use a mold to make the passive damping mater...

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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...

Claims

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Application Information

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IPC IPC(8): F16F15/03F16F15/04
Inventor 黄志雄窦荣洋陈卓代璟石敏先秦岩梅启林张联盟
Owner WUHAN UNIV OF TECH
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