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Body-in-white modal identification method and device

A modal recognition and body-in-white technology, applied in character and pattern recognition, measuring devices, vehicle testing, etc., can solve the problem of low efficiency of modal recognition of body-in-white

Pending Publication Date: 2020-11-24
GUANGZHOU AUTOMOBILE GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a body-in-white modal recognition method and device to solve the technical problem of low efficiency of modal recognition in the prior art body-in-white and make the modal recognition of the body-in-white simpler and more convenient.

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  • Body-in-white modal identification method and device
  • Body-in-white modal identification method and device

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specific Embodiment approach

[0086] As a specific implementation manner of the embodiment of the present invention, the disassembly module 20 is specifically used for:

[0087] Split the frequency response curves of multiple response points to obtain the real part curve frequency curve and the imaginary part curve frequency curve of each response point respectively; combine the real part curves of all response points into a real part curve combination, and combine all responses The imaginary part curves of the points are combined into the imaginary part curve combination.

[0088] Optionally, the disassembly module 20 uses LMS Test.Lab software to disassemble and disassemble the frequency response curves of multiple response points to obtain a real part curve combination and an imaginary part curve combination.

[0089] As a specific implementation manner of the embodiment of the present invention, the acquisition module is specifically configured to: set a corresponding sensor at each response point, and...

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Abstract

The invention discloses a body-in-white modal identification method and device. The identification method comprises the following steps: acquiring frequency response curves corresponding to a plurality of response points of a body-in-white to be identified after excitation is applied; splitting the frequency response curves of the plurality of response points into a real part curve combination andan imaginary part curve combination; and according to the real part curve combination and the imaginary part curve combination, obtaining identification results of the torsional mode and the bendingmode of the to-be-identified body in white. According to the embodiment of the invention, the body-in-white modal identification is simpler and more convenient.

Description

technical field [0001] The invention relates to the technical field of automobile testing, in particular to a body-in-white mode recognition method and device. Background technique [0002] Body modal analysis plays a very important role in the field of automotive NVH. Among the overall modes of the vehicle body, the first-order bending mode and the first-order torsional mode contribute greatly to the low-frequency noise and vibration response. Since the body-in-white is not only the core of the body, but also the basis of the interior body and the vehicle body, the body-in-white is the key research object of the body mode. Generally speaking, the modal frequency of the body-in-white is high, and the modal frequency of the interior body and the vehicle body will also be high. Therefore, it is very important to identify and control the torsional and bending modes of the body-in-white. [0003] The inventors of the present invention found in the research that the existing b...

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Application Information

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IPC IPC(8): G06K9/00G01M17/007
CPCG01M17/007G06V10/94
Inventor 陈良松恽维平牛喜渊宋俊包键
Owner GUANGZHOU AUTOMOBILE GROUP CO LTD