A cooperative vibration suppression method of front and rear vibration suppressors for wind tunnel struts

A vibration suppressor, front and rear technology, applied in the field of wind tunnel experiments, can solve problems such as the inability to guarantee the angle of attack, and achieve the effect of increasing flexibility, good flexibility and strong adjustability

Active Publication Date: 2020-04-07
DALIAN UNIV OF TECH
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Problems solved by technology

Because the system has good flexibility and strong adjustability of the strut structure, it solves the problem that the angle of attack cannot be guaranteed in the suppression of the model vibration in the existing wind tunnel experiment, and is suitable for the application in the actual measurement of the wind tunnel experiment

Method used

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  • A cooperative vibration suppression method of front and rear vibration suppressors for wind tunnel struts
  • A cooperative vibration suppression method of front and rear vibration suppressors for wind tunnel struts
  • A cooperative vibration suppression method of front and rear vibration suppressors for wind tunnel struts

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Embodiment Construction

[0049] The specific embodiments of the present invention will be described in detail below in conjunction with the technical solutions and accompanying drawings.

[0050] figure 1 It is a schematic diagram of the vibration suppression system coordinated by the front and rear vibration suppressor groups of the wind tunnel strut. During the implementation process, the PCI9602 data acquisition card is used to realize the D / A conversion of the signal and output the analog voltage signal. 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 vibration suppressor. The high-voltage piezoelectric ceramic vibration suppressor is selected from the 20VS12 vibration suppressor produced by Xinming Tomorrow Company and installed in the support rod to output the ...

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Abstract

The invention proposes a cooperative vibration suppressing method for wind tunnel support rod front-and-back-arranged vibration suppressing devices, and the method belongs to the wind tunnel experiment technology field, and relates to a cooperative vibration suppressing system for the front-and-back-arranged vibration suppressing devices of a wind tunnel model in a wind tunnel model experiment. The method utilizes an acceleration transducer to use the measured acceleration signal as a feedback signal. Through the acquisition and transmission by a data acquisition card and through the use of the control algorithm specific to the controller, the control signals that are acted on the front-and-back-arranged vibration suppressing devices are worked out, or rather, the moment distribution of two groups of vibration suppressing devices are worked out. Through their own power amplifier, the signals are amplified and transmitted to the front-and-back-arranged vibration suppressing devices. According to the invention, the method transforms the two-section type structure of a traditional support rod to a three-section type structure of a support rod, which realizes the control over the vibration suppressing devices and further the active vibration suppression over a wind tunnel model and eliminates the deviation of the rotation angle. The method makes a support rod mechanical model more flexible and more adjustable, and the method is suitable for the actual measurement of a wind tunnel experiment.

Description

technical field [0001] The invention belongs to the technical field of wind tunnel experiments, and relates to a front-rear vibration suppressor cooperative vibration suppression system aiming at the vibration of a wind tunnel model in the wind tunnel test. 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. Obtaining experimental data through wind tunnel tests is an important means and necessary link for the development and production of modern aircraft, missiles, and rockets. [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 te...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B13/04F16F15/00
CPCF16F15/007G05B13/042
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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