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A noise and loop detection acceleration method and system thereof

A technology of loop detection and noise, applied in the field of mechanical environment test, can solve the problems that loop detection cannot be merged into the pre-test, affect the test efficiency, and increase the required time, so as to shorten the test time required, improve the test efficiency, Guaranteed Effectiveness

Active Publication Date: 2022-08-09
杭州亿恒科技有限公司
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  • Claims
  • Application Information

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Problems solved by technology

In the prior art, since there are multiple vibrating tables that vibrate during the MIMO vibration test, and these vibrating tables will act on their respective control points through mechanical coupling, therefore, the loop detection cannot be combined into the pre-experiment for execution , each shaking table can only be checked sequentially. When the number of shaking tables carried by the vibration test increases, the time required for the entire loop detection has to increase accordingly, which affects the test efficiency

Method used

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  • A noise and loop detection acceleration method and system thereof
  • A noise and loop detection acceleration method and system thereof
  • A noise and loop detection acceleration method and system thereof

Examples

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Embodiment 1

[0043] This embodiment provides an acceleration method for noise and loop detection, which is used to simultaneously perform noise and loop detection on at least two shaking tables in a MIMO vibration test. The typical number of shaking tables is 2, 3, 4, 6, 8, 12, 16, depending on the application purpose of the MIMO vibration test and is not limited here.

[0044] In the prior art, when performing a MIMO vibration test, multiple shaking tables will act on their respective control points through mechanical coupling. Therefore, the loop detection cannot be combined into the pre-experiment, and only each shaking table can be checked in sequence. , taking the typical MIMO vibration test of the 4-control group hydraulic shaking table as an example, the 4-control group hydraulic shaking table conducts the vibration test on 4 shaking tables, and each shaking table corresponds to a control group. If the frequency resolution is 0.05Hz, then the time of one frame of signal is 20s, the ...

Embodiment 2

[0073] This embodiment provides a noise and loop detection acceleration system. The noise and loop detection acceleration system is used to implement the noise and loop detection acceleration method described in Embodiment 1 in a MIMO vibration test, including:

[0074] The sensor is installed on the vibration table under test, and the installation position of the sensor forms the control point of the vibration table under test, so as to pick up the vibration signal of the vibration table under test. In this embodiment, there are two types of sensors, namely acceleration sensors and displacement sensors. Therefore, there are two control points, one for collecting acceleration signals and the other for collecting displacement signals. The position of the control point is determined according to different MIMO vibration tests. The purpose is set flexibly, which is not limited here.

[0075] The input channel is connected to the control point of the vibration table under test, an...

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Abstract

The invention discloses a noise and loop detection method and a system thereof, and relates to the technical field of mechanical environment test. The technical solution provided by the present invention is used to simultaneously perform noise and loop detection on at least two shaking tables in a MIMO vibration test, and includes the following steps: setting the test parameters of each shaking table in the MIMO vibration test; Calculate the equivalent parameters according to the sampling frequency of the equivalent parameters; sample each shaking table according to the sampling frequency calculated by the equivalent parameters, and the sampling includes collecting the noise value and loop value of each shaking table; obtain the test results according to the sampling. The technical scheme provided by the invention greatly shortens the detection time while ensuring the effectiveness of noise identification and loop detection.

Description

【Technical field】 [0001] The invention relates to the technical field of mechanical environmental tests, in particular to a noise and loop detection acceleration method and a system thereof. 【Background technique】 [0002] In the vibration control test in the field of mechanical environmental testing, the vibration controller outputs control signals to the shaking table, and drives the shaking table to vibrate according to the expected target spectrum, so as to assess the ability of the product to withstand various vibration environments. According to the number of vibration tables driven at the same time, the vibration control test is divided into multiple input single output (hereinafter referred to as MISO) vibration test and multiple input multiple output (hereinafter referred to as MIMO) vibration test. MISO vibration test has been widely used, MIMO vibration test is only used in a small number of industries due to lack of test standards, complex test equipment and test...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M7/02G01H17/00
CPCG01M7/022G01H17/00
Inventor 贺惠农黄连生陈木冬
Owner 杭州亿恒科技有限公司
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