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A line-angle compound vibration test method, device and system

A technology of composite vibration and test method, which is applied in vibration testing, measuring device, testing of machine/structural components, etc., which can solve the difficulty of solving the condition spectrum of response point, inconsistent sampling frequency, and lack of composite control technology of linear vibration and angular vibration. And other issues

Active Publication Date: 2020-04-28
CASIC DEFENSE TECH RES & TEST CENT
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Problems solved by technology

[0002] The current vibration waveform reproduction control technology is based on the linear vibration control technology, lacking the composite control technology of linear vibration and angular vibration, and due to the inconsistent sampling frequency of the measured linear vibration spectrum and angular vibration spectrum, it is difficult to solve the conditional spectrum of the response point

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  • A line-angle compound vibration test method, device and system
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  • A line-angle compound vibration test method, device and system

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Embodiment Construction

[0051] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0052] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are to distinguish two entities with the same name but different parameters or parameters that are not the same, see "first" and "second" It is only for the convenience of expression, and should not be construed as a limitation on the embodiments of the present invention, which will not be described one by one in the subsequent embodiments.

[0053] Such as figure 1 Shown, the line-angle composite vibration test method provided by the invention comprises:

[0054] Step 101, by collecting data in the time domain, determine the response values ​​of the line angle vibrations of the two control points;

[00...

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Abstract

The invention discloses a linear-angular compound vibration test method, device and system, which comprises the steps of: determining response values of linear-angular vibrations of control points through acquiring data of a time domain; utilizing a dual-stand random vibration test to acquire a time-domain spectrum of each channel, determining an input signal, and utilizing the input signal and the determined response values to calculate a frequency-response function of a vibration system; calculating to obtain control spectra of the vibration control points according to the determined response values and the frequency-response function; utilizing the control spectra of the control points to conduct a low-magnitude test, and correcting the control spectra of the control points through iterative operation; and completing the loading of a linear-angular vibration test by utilizing the corrected control spectra. Therefore, the linear-angular compound vibration test method, a linear-angular compound vibration test device and a linear-angular compound vibration test system provided by the invention solve the problem of simulating random linear vibration and angular vibration compound environmental stress on a product in laboratory, realize the compound loading of random linear vibration and angular vibration, and break through the limitation that only random linear vibration can beperformed at present.

Description

technical field [0001] The invention relates to the technical field of vibration test methods, in particular to a line-angle composite vibration test method, device and system. Background technique [0002] The current vibration waveform reproduction control technology is based on the linear vibration control technology, lacking the composite control technology of linear vibration and angular vibration, and because the sampling frequency of the measured linear vibration spectrum and angular vibration spectrum is inconsistent, it is difficult to solve the conditional spectrum of the response point. Contents of the invention [0003] In view of this, the object of the present invention is to propose a line-angle composite vibration test method, device and system capable of simultaneously realizing linear vibration and angular vibration. [0004] Based on the above-mentioned purpose, the line-angle composite vibration test method provided by the present invention includes ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M7/02
CPCG01M7/022
Inventor 张文伟庞家志李健华栋
Owner CASIC DEFENSE TECH RES & TEST CENT
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