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Simulation test device for suppressing vibration of ejector support plate and vibration suppression method

A vibration suppression and simulation test technology, which is applied in vibration suppression adjustment, non-rotating vibration suppression, vibration testing, etc., can solve problems affecting the progress of ejector tests, time-consuming and labor-intensive problems, and achieve significant vibration suppression effects and good stability. Effect

Active Publication Date: 2021-08-24
中国空气动力研究与发展中心设备设计与测试技术研究所
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Problems solved by technology

Therefore, in practical applications, the support plate is often damaged due to vibration. The solution is to constantly replace the support plate, which is time-consuming and laborious, and will also affect the progress of the test related to the ejector.

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  • Simulation test device for suppressing vibration of ejector support plate and vibration suppression method
  • Simulation test device for suppressing vibration of ejector support plate and vibration suppression method
  • Simulation test device for suppressing vibration of ejector support plate and vibration suppression method

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Embodiment Construction

[0028] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.

[0029] Any feature disclosed in this specification (including any appended claims, abstract and drawings), unless expressly stated otherwise, may be replaced by alternative features which are equivalent or serve a similar purpose. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.

[0030] pass figure 1 It can be seen that the simulation experiment device in the present invention includes a laser vibrometer, a signal generator, a vibration excitation mechanism, a vibration suppression mechanism and a laser probe;

[0031] The laser vibrometer is used to output the sinusoidal excitation signal to the signal generator and receive the vibration state signal detected by the laser probe, and generate the corresponding transfe...

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Abstract

The invention provides a simulation test device for suppressing vibration of an ejector support plate and a vibration suppression method. The simulation test device comprises a laser doppler velocimeter, a signal generator, a vibration excitation mechanism, a vibration suppression mechanism and a laser probe. The device can test and verify the actual vibration suppression effect of the vibration suppression method. Meanwhile, the invention provides a method for restraining vibration of the supporting plate, the method adopts finite element analysis of a three-dimensional model of the ejector to be combined with field measured data, the main vibration concentration position of the ejector is determined, piezoelectric fiber pieces are arranged at the main vibration concentration position to serve as a sensor and an actuator, an active oscillation piezoelectric control method or an active damping control method is cooperatively selected to control the actuator, vibration suppression can be carried out on a single frequency or a whole frequency band, and good stability and a remarkable vibration suppression effect are achieved.

Description

technical field [0001] The invention relates to the field of vibration control, in particular to a simulation test device and a vibration suppression method for suppressing the vibration of an ejector support plate. Background technique [0002] During the working process of the support plate of the ejector nozzle, the strong vibration will be generated due to the high-speed air flow disturbance, which will cause a large stress at the root of the support plate, and eventually cause fatigue damage. In the prior art, there is no effective solution to the problem of fatigue damage caused by strong vibration of the support plate. Therefore, in practical applications, the support plate is often damaged due to vibration. The solution is to constantly replace the support plate with a new one, which is time-consuming and labor-intensive, and will also affect the progress of the test related to the ejector. Contents of the invention [0003] The purpose of the present invention is...

Claims

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Application Information

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IPC IPC(8): G01M7/02F16F15/02
CPCG01M7/025F16F15/02F16F15/007F16F15/002
Inventor 刘宗政杨毅晟韩旭王元兴王建珩聂旭涛林辰龙麻越垠贾赫权
Owner 中国空气动力研究与发展中心设备设计与测试技术研究所
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