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Wind load self-damping method for vibration of wind tunnel model

A model and wind load technology, applied in the field of wind tunnel experiments, can solve problems such as the inability to achieve automatic adjustment, and achieve the effect of strong adjustability, good flexibility, and a large adjustable angle range.

Active Publication Date: 2017-11-03
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above methods all rely on the action of the piezoelectric actuator on the strut to achieve vibration suppression, and cannot realize automatic adjustment under different wind tunnel blowing conditions

Method used

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  • Wind load self-damping method for vibration of wind tunnel model
  • Wind load self-damping method for vibration of wind tunnel model
  • Wind load self-damping method for vibration of wind tunnel model

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Experimental program
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Embodiment Construction

[0043] The specific embodiments of the present invention will be described in detail below in conjunction with the technical solutions and accompanying drawings.

[0044] Schematic diagram of the wind load self-damping system for the vibration of the entire wind tunnel model, as shown in figure 1 shown. During the implementation process, the PCI9602 data acquisition card is used to realize the D / A conversion of the signal, and the analog voltage signal is output. The controller is a real-time simulation controller produced by German company dSpace. The power amplifier, that is, the voltage amplification drive power supply is the PZD700A dual-channel power supply produced by TREK Company to supply power to the high-voltage piezoelectric ceramic actuator. The high-voltage piezoelectric ceramic actuator is selected from the model 20VS12 produced by Core Tomorrow Company. Assuming that the wind load on the aircraft is F=1000N, the length of the strut system is L=2m, and the ang...

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Abstract

The invention belongs to the wind tunnel experiment technical field and relates to a wind load self-damping method for the vibration of a wind tunnel model. According to the method, an included angle between an aircraft model and a supporting rod is adjusted in real time on the basis of an energy method, so that the pose of the model can be changed; acceleration signals are measured by using an acceleration sensor and are adopted as feedback signals to reflect a system vibration condition; a specific control algorithm in a controller is utilized to solve control signals which act on a piezoelectric ceramic actuator; the control signals are amplified by a power amplifier; and the amplified control signals are transmitted to the piezoelectric ceramic actuator, so that the piezoelectric ceramic actuator can be controlled, and therefore, the pose adjustment of the wind tunnel model can be realized, and damping can be realized.

Description

technical field [0001] The invention belongs to the technical field of wind tunnel experiments, and relates to a wind load self-vibration damping method aimed at the vibration of a wind tunnel model in wind tunnel experiments. Background technique [0002] Wind tunnel experiment refers to an aerodynamic experimental method that places aircraft or other object models in a wind tunnel to study gas flow and its interaction with the model to understand the aerodynamic characteristics of actual aircraft or other objects. Wind tunnel model test is an important link in the process of aircraft research and development, and plays an irreplaceable role in the aerospace field. [0003] During wind tunnel tests, model brackets are usually used for support. Wherein the tail support adopts a structure in which a strut, a balance and a support are connected. Because the tail support system can increase the angle of attack of the model test and reduce the interference of the support to th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M9/08G05B13/04
CPCG01M9/08G05B13/042
Inventor 刘巍姜雨丰刘惟肖袁晓晶鲁继文张家昆周孟德刘昱王世红贾振元
Owner DALIAN UNIV OF TECH
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