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A magnetorheological self-tuning vibration absorber with a three-degree-of-freedom energy trap

A vibration absorber and magnetorheological technology, applied in shock absorbers, shock absorbers, springs/shock absorbers, etc., can solve the problems of inability to adjust in time, small additional mass, etc., and achieve simple structure, good damping and vibration reduction, good effect

Active Publication Date: 2022-07-29
BEIJING UNIV OF TECH
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Problems solved by technology

Nonlinear Energy Sink (NES) has the advantages of small additional mass, wide vibration suppression frequency range, directional target energy transfer, high reliability, and strong robustness, which can effectively make up for the defects of TMD in the field of nonlinear vibration However, the existing nonlinear energy well devices (NES) are all passively controlled, and cannot be adjusted in time according to the characteristics of external excitation and the changes in the vibration characteristics of the structure itself, and there are certain limitations

Method used

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  • A magnetorheological self-tuning vibration absorber with a three-degree-of-freedom energy trap
  • A magnetorheological self-tuning vibration absorber with a three-degree-of-freedom energy trap
  • A magnetorheological self-tuning vibration absorber with a three-degree-of-freedom energy trap

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Embodiment Construction

[0044] 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.

[0045] Combine below Figure 1 to Figure 6 The vibration absorption unit 10 of a magnetorheological self-tuning vibration absorber with a three-degree-of-freedom energy trap according to an embodiment of the present invention will be described in detail. The magnetorheological self-tuning vibration absorber vibration absorption unit 10 with a three-degree-of-freedom energy trap is the most promising vibration control device for a fluid transport pipeline, and will have wide application p...

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Abstract

The invention discloses a magnetorheological self-tuning vibration absorber with a three-degree-of-freedom energy trap, comprising an acceleration sensor, an electronic control unit, a driving module and a vibration absorber. The acceleration sensor senses the vibration acceleration of a flow pipeline and serves as a The vibration signal of the closed-loop control is transmitted to the electronic control unit; the electronic control unit is used to compare the vibration signal provided by the pump speed value and the acceleration sensor with the predetermined amplitude to obtain an error signal, thereby generating and outputting the control signal; drive The module outputs a drive signal with a certain amplitude and frequency according to the received control signal; the vibration absorber is installed on the flow pipeline to receive the drive signal and generate electromagnetic damping to offset the excitation force transmitted by the pump to the flow pipeline. The invention senses the vibration response of the pump in real time, controls the vibration absorber to apply electromagnetic damping to offset the excitation force transmitted by the motor, and has obvious vibration reduction effect, low cost, small size and flexible use.

Description

technical field [0001] The invention belongs to a vibration absorber in the technical field of fluid transmission, in particular to a magnetorheological self-tuning vibration absorber with a three-degree-of-freedom energy trap. Background technique [0002] Fluid transmission is a transmission method in which fluid is used as a working medium for energy conversion, transmission and control. Because of the unique advantages of fluid transmission, it has been widely used and has become an irreplaceable and important basic technology in the modernization process of industry, agriculture, national defense and science and technology. For example, in the hydraulic system, all components and accessories are connected by hydraulic pipelines and pipe joints, and the hydraulic medium is transported from the hydraulic pump to each actuator, and then led back to the oil tank from the actuator to form a closed circuit, forming a complete Hydraulic system. In the pipeline system, there ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16F9/53F16F15/00
CPCF16F9/535F16F15/002
Inventor 纪辉恭飞聂松林宁冬晶
Owner BEIJING UNIV OF TECH
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